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Li J, Chen W, Xu K, Xie W, Qi H, Tang Y, Wang S, Deng T, Morel JL, Qiu R. Fe(III) transporter OsYSL15 may play a key role in the uptake of Cr(III) in rice (Oryza sativa L.). J Hazard Mater 2024; 469:133531. [PMID: 38447361 DOI: 10.1016/j.jhazmat.2024.133531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/23/2023] [Accepted: 01/12/2024] [Indexed: 03/08/2024]
Abstract
Due to the widely discharge of chromium (Cr) by mining and smelting industries, etc., contamination of paddy soils and rice has become serious problems. Therefore it is crucial to explore how rice takes up Cr. Cr(III) is the most common Cr form in the long-term water flooding paddy soils. Here, we demonstrate that OsYSL15, a key gene for Fe(III) uptake, is equally applicable for Cr(III) uptake in rice. Firstly, the antagonistic effect of Cr(III) and Fe(III) in the uptake process was found. Rice could accumulate more Cr(III) under Fe-deficient conditions. And the Fe(III) content in the protoplasts of rice root cells gradually decreased with the increase exposure of Cr(III). Knockdown of OsYSL15 in rice significantly reduced the Cr(III) uptake rate. Compared with wild type rice, the accumulation of Cr(III) in OsYSL15 mutant was decreased by 40.7%- 70.6% after gene editing. These results indicate that OsYSL15 is a key gene responsible for Cr(III) uptake in rice, which can guide the screening or genetic modification for low-Cr-accumulation rice varieties.
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Affiliation(s)
- Jingjing Li
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Wenzhen Chen
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Kairan Xu
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Weipeng Xie
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Hua Qi
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yetao Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Tenghaobo Deng
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Jean-Louis Morel
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Laboratoire Sols et Environnement, INRAE-Université de Lorraine, Vandoeuvre-lès-Nancy F-54518, France
| | - Rongliang Qiu
- Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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2
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Zhang L, Gao J, Liu Y, Zhou Z, Sheng X, Li D, Chen Y, Lyu S. Ascorbic acid enhanced the circulation between Fe(II) and Fe(III) in peroxymonosulfate system for fluoranthene degradation. Water Sci Technol 2024; 89:1682-1700. [PMID: 38619897 DOI: 10.2166/wst.2024.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/11/2024] [Indexed: 04/17/2024]
Abstract
In this research, ascorbic acid (AA) was used to enhance Fe(II)/Fe(III)-activated permonosulfate (PMS) systems for the degradation of fluoranthene (FLT). AA enhanced the production of ROS in both PMS/Fe(II) and PMS/Fe(III) systems through chelation and reduction and thus improved the degradation performance of FLT. The optimal molar ratio in PMS/Fe(II)/AA/FLT and PMS/Fe(III)/AA/FLT processes were 2/2/4/1 and 5/10/5/1, respectively. In addition, the experimental results on the effect of FLT degradation under different groundwater matrixes indicated that PMS/Fe(III)/AA system was more adaptable to different water quality conditions than the PMS/Fe(II)/AA system. SO4·- was the major reactive oxygen species (ROS) responsible for FLT removal through the probe and scavenging tests in both systems. Furthermore, the degradation intermediates of FLT were analyzed using gas chromatograph-mass spectrometry (GC-MS), and the probable degradation pathways of FLT degradation were proposed. In addition, the removal of FLT was also tested in actual groundwater and the results showed that by increasing the dose and pre-adjusting the solution pH, 88.8 and 100% of the FLT was removed for PMS/Fe(II)/AA and PMS/Fe(III)/AA systems. The above experimental results demonstrated that PMS/Fe(II)/AA and PMS/Fe(III)/AA processes have a great perspective in practice for the rehabilitation of FLT-polluted groundwater.
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Affiliation(s)
- Longbin Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Jianxiong Gao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Yulong Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Zhengyuan Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Xianxian Sheng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Dexiao Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Yuantian Chen
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Shuguang Lyu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China E-mail:
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Hu X, Wang H, Ji B, Wang B, Guo W, Chen R, Jiang C, Chen Y, Zhou D, Zhang Q. Metagenomic insights into the mechanism for the rapid enrichment and high stability of Candidatus Brocadia facilitated by Fe(Ⅲ). Water Res 2024; 252:121224. [PMID: 38309072 DOI: 10.1016/j.watres.2024.121224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/09/2023] [Accepted: 01/28/2024] [Indexed: 02/05/2024]
Abstract
The rapid enrichment of anammox bacteria and its fragile resistance to adverse environment are the critical problems facing of anammox processes. As an abundant component in anammox bacteria, iron has been proved to promote the activity and growth of anammox bacteria in the mature anammox systems, but the functional and metabolic profiles in Fe(III) enhanced emerging anammox systems have not been evaluated. Results indicated that the relative abundance of functional genes involved in oxidative phosphorylation, nitrogen metabolism, cofactors synthesis, and extracellular polymers synthesis pathways was significantly promoted in the system added with 5 mg/L Fe(III) (R5). These enhanced pathways were crucial to energy generation, nitrogen removal, cell activity and proliferation, and microbial self-defense, thereby accelerating the enrichment of anammox bacteria Ca. Brocadia and facilitating their resistance to adverse environments. Microbial community analysis showed that the proportion of Ca. Brocadia in R5 also increased to 64.42 %. Hence, R5 could adapt rapidly to the increased nitrogen loading rate and increase the nitrogen removal rate by 108 % compared to the system without Fe(III) addition. However, the addition of 10 and 20 mg/L Fe(III) showed inhibitory effects on the growth and activity of anammox bacteria, which exhibited the lower relative abundance of Ca. Brocadia and unstable or even collapsed nitrogen removal performance. This study not only clarified the concentration range of Fe(III) that promoted and inhibited the enrichment of anammox bacteria, but also deepened our understanding of the functional and metabolic mechanisms underlying enhanced enrichment of anammox bacteria by Fe(III), providing a potential strategy to hasten the start-up of anammox from conventional activated sludge.
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Affiliation(s)
- Xiaoling Hu
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Hongyu Wang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China.
| | - Bin Ji
- Department of Water and Wastewater Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Bin Wang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Wenbin Guo
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Rongfan Chen
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Can Jiang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Yanfang Chen
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Dao Zhou
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Qian Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, China
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Li X, Wu J, Zhu X. Multi-component determination based on high quantum yield "on-off-on" carbon quantum dots sensor. Spectrochim Acta A Mol Biomol Spectrosc 2024; 307:123662. [PMID: 37984116 DOI: 10.1016/j.saa.2023.123662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/11/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
The nitrogen(N)-sulfur(S)-sodium(Na(I)) co-doped carbon quantum dots (CQDs) were synthesized via a one-step hydrothermal method, which exhibited a remarkably high fluorescence quantum yield (24.58%) and exceptional optical properties. The fluorescence "on-off-on" sensor was constructed. The fluorescence of CQDs was rapidly quenched with Fe(III) and the fluorescence recovered by ascorbic acid (Asc) partially and arginine (Arg)/histidine (His) completely. The CQDs fluorescence sensor demonstrated rapid response, exceptional sensitivity, excellent stability, remarkable selectivity, and robust anti-interference performance, which was feasible to simultaneously determine the concentrations of multiple analytes in the sample with satisfactory recovery rates. The "on-off-on" fluorescence mechanism of CQDs was investigated, revealing the significant potential of carbon nano-functionalized materials in the field of drug detection through fluorescence sensing.
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Affiliation(s)
- Xiang Li
- College of Chemistry and Chemical Engineering, College of Guangling, Yangzhou University, Yangzhou 225002, China
| | - Jun Wu
- College of Chemistry and Chemical Engineering, College of Guangling, Yangzhou University, Yangzhou 225002, China
| | - Xiashi Zhu
- College of Chemistry and Chemical Engineering, College of Guangling, Yangzhou University, Yangzhou 225002, China.
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Liu X, Wang L, Zheng J, Mao W, Liu W, Zhu G, Ji XM, Zhang Q. Multi-omics analysis reveals the collaboration and metabolisms of the anammox consortia driven by soluble/non-soluble Fe(III) as the sole iron element. J Environ Manage 2024; 352:120124. [PMID: 38244412 DOI: 10.1016/j.jenvman.2024.120124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 01/22/2024]
Abstract
Iron is recognized as a physiological requirement for anammox bacteria (AnAOB), with Fe(II) considered to be the most effective form. However, Fe(III), instead of Fe(II) is the common iron form in natural and artificial ecosystems. In this study, the nitrogen removal performance and metabolic mechanisms in anammox consortia with soluble and non-soluble Fe(III) as the sole iron element were investigated. After the 150-day operation, the soluble (FeCl3) and insoluble (Fe2O3) Fe(III)-fed anammox systems reached nitrogen removal rates of 71.84 ± 0.80% and 50.20 ± 0.98%, respectively. AnAOB could survive with soluble (FeCl3) or insoluble (Fe2O3) Fe(III) as the sole iron element, reaching relative abundances of 18.49% and 13.16%, respectively. The results show that the formation of anammox core consortia can enable AnAOB's survival to adverse external conditions of Fe(II) deficiency. Metagenomic and metatranscriptomic analysis reveal that Ca. Kuenenia can only uptake Fe(II) into the cell for metabolisms either independently through the extracellular electron transfer or with the cross-feeding of symbiotic microbes. This study provides insight into the utilization and metabolic mechanisms of Fe(III) in Ca. Kuenenia-dominated consortia, and deepens the understanding of anammox core consortia in the nitrogen, carbon, and iron cycling, further promoting the practical applications of anammox processes.
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Affiliation(s)
- Xuerui Liu
- School of Humanity, Southeast University, Nanjing, 211189, China; Center for Ecotourism and Regional Development, Southeast University, Nanjing, 211189, China
| | - Lixia Wang
- School of Energy and Environment, Southeast University, Nanjing, 211189, China
| | - Jinli Zheng
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Weijie Mao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenru Liu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Guangcan Zhu
- School of Energy and Environment, Southeast University, Nanjing, 211189, China
| | - Xiao-Ming Ji
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Qi Zhang
- School of Energy and Environment, Southeast University, Nanjing, 211189, China.
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6
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Ricart D, Dorado AD, Lao-Luque C, Baeza M. Microflow injection analysis based on modular 3D platforms and colorimetric detection for Fe(III) monitoring in a wide concentration range. Mikrochim Acta 2023; 191:3. [PMID: 38041754 PMCID: PMC10693521 DOI: 10.1007/s00604-023-06029-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/02/2023] [Indexed: 12/03/2023]
Abstract
A modular microflow injection analysis (microFIA) system for the determination of Fe(III) in a bioleaching reactor has been designed, developed and validated. The different modules of the analyzer (mixer, diluter, disperser and detector) were 3D-printed. Fe(III) quantification is due by measuring the color intensity of the chelate formed between Fe(III) and salicylic acid at 525 nm. The device has been designed to dilute, disperse and detect high Fe(III) concentrations in the form of an inexpensive multi-step photometric flow cell that uses an light-emitting diode (LED) as a light source and an light-dependent resistor (LDR) as a light intensity detector. This microFIA system has been shown to be suitable for automatic and continuous determination of Fe(III) in the operation of a bioreactor for the oxidation of Fe(II). The device has a good repeatability (less than 5% of coefficient of variation in the whole range of concentrations) and accuracy of around 100%. The analyzer features an exceptional wide linear range, between 25 and 6000 mg·L-1. The device was successfully applied to the determination of Fe(III) in real samples. The obtained results proved that the method is applicable for accurate, precise, rapid, and low-cost colorimetric analysis and didn't show significant differences with a conventional UV-Vis method.
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Affiliation(s)
- David Ricart
- Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain
| | - Antonio David Dorado
- Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain
| | - Conxita Lao-Luque
- Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain
| | - Mireia Baeza
- GENOCOV Research Group, Department of Chemistry, Faculty of Science, Edifici C-Nord, Universitat Autònoma de Barcelona, Carrer dels Til·Lers, 08193, Bellaterra, Spain.
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7
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Zhang Y, Wu S, Sun P. Estimation of stability constants of Fe(III) with antibiotics and dissolved organic matter using a novel UV-vis spectroscopy method. Sci Total Environ 2023; 899:165702. [PMID: 37495120 DOI: 10.1016/j.scitotenv.2023.165702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/16/2023] [Accepted: 07/19/2023] [Indexed: 07/28/2023]
Abstract
Determining conditional stability constant (Kcond) is paramount in assessing complex stability, particularly in Fe(III) complexes that are prevalent in actual surface water and wastewater matrices. In this study, existing methods of Kcond determination were evaluated and a novel UV-Vis spectroscopy method was proposed based on the evaluation of these approaches. Model ligands (ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), and oxalic acid (OA)), as well as common antibiotics (kanamycin (Kana) and tetracycline (TTC)), were employed to determine the Kcond of the Fe(III)-ligand complexes under neutral conditions (pH 6.5). The obtained fitting results revealed that the logKcond were in the order of Fe(III)-EDTA (7.08) > Fe(III)-NTA (4.67) > Fe(III)-OA (4.32) > Fe(III)-TTC (4.28) > Fe(III)-Kana (3.07). In addition to these single ligands, the methodology was extended to the Fe(III) complexation with humic acid (HA), a complex mixture of organic components, where the fitting result indicated a logKcond of 5.02 M-1. The method's application domain was analyzed by numerical analysis and combined with experimental results. The findings demonstrate that the proposed methodology possesses satisfactory measurement capability for Kcond ranging from 103 to 107 M-1, suggesting its broad applicability to the majority of complexes. This method can provide valuable insights into the impact of Fe(III) complexes within the water matrix.
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Affiliation(s)
- Yujie Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Shikang Wu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Peizhe Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China.
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Yin S, Jiang X, Wang Y, Yang Y, Chen D, Shen J. Defense mechanism of Fe(III)-assisted anammox under salt stress: Performance and microbial community dynamics. Water Res X 2023; 20:100188. [PMID: 37671038 PMCID: PMC10477044 DOI: 10.1016/j.wroa.2023.100188] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 09/07/2023]
Abstract
Anammox process has attracted attention due to its excellent nitrogen removal properties in nitrogen-rich wastewater treatment. However, there were some obstacles for the application of anammox to treat high saline wastewater due to its sensitivity to salinity. In this study, Fe(III) addition strategy was developed to assist anammox to adapt high saline surroundings, with the defense mechanism involved in Fe(III)-assisted anammox emphasized. Nitrogen removal performance of anammox was deteriorated at 3.5% salinity, with the average total nitrogen removal rate of 0.85 kg/(m3·d) observed. The continuous addition of Fe(III) could significantly assist anammox to resist high salinity through facilitating the enrichment of anammox species. Candidatus Kuenenia was the main anammox species and outcompeted Candidatus Brocadia under high saline surrounding. The relative abundance of Candidatus Kuenenia increased with increased salinity and reached 41.04% under 3.5% salinity. The synthesis of key enzymes of anammox species were improved through Fe(III) addition and then facilitated the energy metabolism of anammox bacteria under 3.5% salinity. This study provides a new thought in Fe(III)-assisted anammox enhancement technologies and deepens the insight of anammox in high saline wastewater treatment.
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Affiliation(s)
- Shuyan Yin
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xinbai Jiang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yuming Wang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yang Yang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Dan Chen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jinyou Shen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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Gao S, Zhu C, Ma L, Liu C, Zhang H, Zhang S. Preparation of an Aminated Lignin/ Fe(III)/Polyvinyl Alcohol Film: A Packaging Material with UV Resistance and Slow-Release Function. Foods 2023; 12:2794. [PMID: 37509886 PMCID: PMC10378874 DOI: 10.3390/foods12142794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/11/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
To reduce the usage of petroleum-based plastic products, a lignin-based film material named aminated lignin/Fe(III)/PVA was developed. The mixture of 8 g lignin, 12 mL diethylenetriamine, 200 mL NaOH solution (0.4 mol·L-1), and 8 mL formaldehyde was heated at 85 °C for 4 h; after the aminated lignin was impregnated in the Fe(NO3)3 solution, a mixture of 3 g aminated lignin/Fe(III), 7 g PVA, and 200 mL NaOH solution (pH 8) was heated at 85 °C for 60 min; after 2 mL of glycerin was added, the mixture was spread on a glass plate to obtain the aminated lignin/Fe(III)/PVA film. This film demonstrated hydrophobicity, an UV-blocking function, and a good slow-release performance. Due to the formation of hydrogen bonds between the hydroxyl groups of lignin and PVA, the tensile strength, the elongation at break, and the fracture resistance of the film were 9.1%, 107.8%, and 21.9% higher than that of pure PVA film, respectively. The iron content of aminated lignin/Fe(III)/PVA was 1.06 wt%, which mainly existed in a trivalent form. The aminated lignin/Fe(III)/PVA film has the potential to be used as a food packaging material with anti-ultraviolet light function and can also be developed as other packaging materials, such as seedling bowls, pots for transplanting, and coating films during transport.
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Affiliation(s)
- Shushan Gao
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Chonghao Zhu
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Liangfei Ma
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Pig-Breeding Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Chenghai Liu
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Hongqiong Zhang
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Shengming Zhang
- College of Engineering, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Pig-Breeding Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Heilongjiang Province Technology Innovation Center of Mechanization and Materialization of Major Crops Production, Harbin 150030, China
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10
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Guo Z, Zheng HY, Huang ZY, Liu YZ, Liu YH, Chen Y, Gao J, Hu Y, Huang C. Solvothermal synthesis of bifunctional carbon dots for tartrazine and Fe(III) detection from chamomile residue by ternary DES pretreatment. Food Chem 2023; 426:136604. [PMID: 37348402 DOI: 10.1016/j.foodchem.2023.136604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/28/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
A ternary deep eutectic solvent (DES) consisting of choline chloride, lactic acid, and urea in a molar ratio of 1:2:2 was used to pretreat chamomile residue, followed by carbon dots (CDs) preparation using a one-pot solvothermal method. The CDs prepared under the suitable conditions had a high quantum yield of 47.34% and could be used as a bifunctional fluorescent probe for the detection of tartrazine and Fe(III). The concentration of tartrazine or Fe(III) had a good linear relationship with the fluorescence intensity of CDs that the determination coefficient (R2) was 0.9957 and 0.9943, and the limit of detection (LOD) was 40 nM and 119 nM, respectively. After verifying the different fluorescence quenching mechanisms of CDs by these two substances, a quantitative analysis was performed on real samples with recoveries of 90.70%∼104.29%. Overall, this study provided a promising technology for chemical conversion from low-cost chamomile residue to attractive bifunctional fluorescent probe.
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Affiliation(s)
- Zheng Guo
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Han-Yi Zheng
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Zhong-Ying Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yue-Zhen Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yao-Hua Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yun Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Jing Gao
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yong Hu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
| | - Chao Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
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11
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Liang-Tong Z, Li Z, Yuqing Y, Na H, Bate B. Investigation of aqueous Fe(III) and Mn(II) removal using dolomite as a permeable reactive barrier material. Environ Technol 2023; 44:2039-2053. [PMID: 34919016 DOI: 10.1080/09593330.2021.2020340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/03/2021] [Indexed: 05/30/2023]
Abstract
Iron (Fe) and manganese (Mn) are the most frequently detected heavy metals in the soil and groundwater near municipal landfill sites. Natural calcium-carbonate-based materials, such as dolomite, effectively remove metal ions and are suitable as reactive materials for permeable reactive barriers (PRBs). However, multiple heavy metals usually coexist in contaminated groundwater, the effectiveness and competitive precipitation mechanisms in the removal of Fe(III) and Mn(II) are unclear. In this study, we investigated the efficiency and influencing factors of the removal of single and coexisting Fe(III) and Mn(II) by dolomite through experimental batch and column tests, property characterization, and PHREEQC simulations. Dolomite with 1.18-2.36 mm particle size showed the best removal efficiency for Fe(III) and Mn(II) through precipitation. Fe(III) was preferentially precipitated by dolomite with higher removal efficiency, attributed to the lower solubility product (Ksp) of iron precipitates. Compared with Fe(III), Mn(II) was precipitated conditionally, and the removal efficiency was restricted by the concentration of Fe(III) in the system. Considering the application of PRB in the field, dolomite would be effective for the remediation of coexisting heavy metals with lower precipitate Ksp. The half-time of Mn(II) removal could serve as a reference for PRB thickness designs if the target metal contaminants were in a similar concentration range as Fe(III) and Mn(II). Additionally, the PRB performance could be affected by the reduction of hydraulic permeability induced by precipitation, and the fine precipitates migrating from PRB might affect downstream groundwater quality.
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Affiliation(s)
- Zhan Liang-Tong
- Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China
- Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Zhao Li
- Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China
- Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - You Yuqing
- Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China
- Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Hao Na
- Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China
- Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Bate Bate
- Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China
- Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, People's Republic of China
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12
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Song L, Zhu Y, Wang J, Wu T, Zhou S, Zhang X, Tang J, Wang J, Lin D, Chen G. Inorganic phosphate regulated high luminescence NaYF 4:Yb 3+, Er 3+ as an iron ion fluorescent nanoprobe. Spectrochim Acta A Mol Biomol Spectrosc 2023; 300:122903. [PMID: 37290241 DOI: 10.1016/j.saa.2023.122903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/08/2023] [Accepted: 05/18/2023] [Indexed: 06/10/2023]
Abstract
The iron ion in industrial circulating cooling water is an important indicator for early warning of equipment corrosion and control level. It is interesting to construct an upconversion luminescence iron ion nanoprobe with a common inorganic phosphate water treatment agent. Herein, inorganic phosphate sodium hexametaphosphate (SHMP) was used to regulate the morphology and functionalization of NaYF4:Yb3+, Er3+ upconversion luminescent nanoprobe (UCNPs) and applied to fluorometric detection of trace Fe(III) in water based on the fluorescence quenching which is caused by the selective coordination between hexametaphosphate on the surface of UCNPs and Fe(III). The structure, morphology, and luminous intensity of UCNPs were regulated by disodium hydrogen phosphate (ADSP), sodium tripolyphosphate (STPP) and sodium hexametaphosphate(SHMP). The UCNPs functionalized with SHMP has high sensitivity and selectivity for Fe(III) detection. The linear range and detection limit are 1.0-50 μM and 0.2 μM, respectively. The method has satisfactory results for the detection of trace Fe(III) in industrial circulating cooling water.
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Affiliation(s)
- Lingyu Song
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yongbao Zhu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jinfeng Wang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Tingxia Wu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shuo Zhou
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xianbo Zhang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Junping Tang
- School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, China
| | - Jikui Wang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Donghai Lin
- School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, China.
| | - Guosong Chen
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
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13
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Bai X, Yang Q, Guo Y, Hao B, Zhang R, Duan R, Li J. Alkyl halide formation from degradation of carboxylic acids in the presence of Fe(III) and halides under light irradiation. Water Res 2023; 235:119842. [PMID: 36921357 DOI: 10.1016/j.watres.2023.119842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/23/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
Advanced oxidation processes (AOPs) have been widely used in water and wastewater treatment and have shown excellent performance in remediating contaminated water. However, their oxidation byproducts, including halogenated organics, have recently attracted increasing attention. Alkyl halides are among the most important environmental pollutants in nature. Here, we report a Fenton-like reaction in which alkyl halides can form during the photodegradation of aliphatic carboxylic acids in the presence of Fe(III) and halides. Chloromethane, chloroethane, and 1-chloropropane were produced from the degradation of acetic acid, propionic acid and n-butyric acid, respectively. CH3Cl, CH2Cl2 and CHCl3 were all identified as the products of acetic acid with the yields of approximately 5.1%, 0.2% and 0.005%, respectively. It was demonstrated that hydroxyl radicals, halogen radicals and alkyl radicals were involved in the formation of alkyl halides. A possible mechanism of chloromethane formation was proposed based on the results. In real samples of saline water, the addition of carboxylic acid and Fe(III) significantly promoted the generation of CH3Cl under xenon lamp irradiation. The results indicated that the coexistence of Fe(III), halides and carboxylic acids enhanced the photochemical release of alkyl halides. The reactions described in this paper may contribute to knowledge on the mechanism of halogenated byproduct formation during AOPs.
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Affiliation(s)
- Xueling Bai
- Department of Chemistry, China Agricultural University, Beijing, 100193 China
| | - Qian Yang
- Department of Chemistry, China Agricultural University, Beijing, 100193 China
| | - Yang Guo
- Department of Chemistry, China Agricultural University, Beijing, 100193 China
| | - Baoqiang Hao
- Department of Chemistry, China Agricultural University, Beijing, 100193 China
| | - Renyuan Zhang
- Department of Chemistry, China Agricultural University, Beijing, 100193 China
| | - Ran Duan
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jing Li
- Department of Chemistry, China Agricultural University, Beijing, 100193 China.
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14
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Su C, Xian Y, Qin R, Zhou Y, Lu M, Wan X, Chen Z, Chen M. Fe(III) enhances Cr(VI) bioreduction in a MFC-granular sludge coupling system: Experimental evidence and metagenomics analysis. Water Res 2023; 235:119863. [PMID: 36933314 DOI: 10.1016/j.watres.2023.119863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
The influence of Fe(III) on the bioreduction efficiency of Cr(VI) in a microbial fuel cell (MFC)-granular sludge coupling system using dissolved methane as an electron donor and carbon source was explored, and the mechanism of Fe(III) mediating enhancement in the bioreduction process of Cr(VI) in the coupling system was also investigated. Results showed that the presence of Fe(III) enhanced the ability of the coupling system to reduce Cr(VI). The average removal efficiencies of Cr(VI) in the anaerobic zone in response to 0, 5, and 20 mg/L of Fe(III) were 16.53±2.12%, 24.17±2.10%, and 46.33±4.41%, respectively. Fe(III) improved the reducing ability and output power of the system. In addition, Fe(III) enhanced the electron transport systems activity of the sludge, the polysaccharide and protein content in the anaerobic sludge. Meanwhile, X-ray photoelectron spectrometer (XPS) spectra demonstrated that Cr(VI) was reduced to Cr(III), while Fe2p participated in reducing Cr(VI) in the form of Fe(III) and Fe(II). Proteobacteria, Chloroflexi, and Bacteroidetes were the dominant phylum in the Fe(III)-enhanced MFC-granular sludge coupling system, accounting for 49.7%-81.83% of the microbial community. The relative abundance of Syntrophobacter and Geobacter increased after adding Fe(III), indicating that Fe(III) contributed to the microbial mediated anaerobic oxidation of methane (AOM) and bioreduction of Cr(VI). The genes mcr, hdr, and mtr were highly expressed in the coupling system after the Fe(III) concentration increased. Meanwhile, the relative abundances of coo and aacs genes were up-regulated by 0.014% and 0.075%, respectively. Overall, these findings deepen understanding of the mechanism of the Cr(VI) bioreduction in the MFC-granular sludge coupling system driven by methane under the influence of Fe(III).
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Affiliation(s)
- Chengyuan Su
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China; College of Environment and Resources, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China.
| | - Yunchuan Xian
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Ronghua Qin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Yijie Zhou
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Meixiu Lu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Xingling Wan
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Zhengpeng Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
| | - Menglin Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China
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15
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Tagyan AI, Yasser MM, Mousa AM, Alkhalifah DHM, Hozzein WN, Marzouk MA. A Feasibility Study on the Recall of Metallophilic Fungi from Fe(III)-Contaminated Soil and Evaluating Their Mycoremediation Capacity: Experimental and Theoretical Study. J Fungi (Basel) 2023; 9:jof9030382. [PMID: 36983550 PMCID: PMC10053633 DOI: 10.3390/jof9030382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/16/2023] [Accepted: 02/27/2023] [Indexed: 03/30/2023] Open
Abstract
Mycoremediation is one of the most attractive, eco-friendly, and sustainable methods to mitigate the toxic effects of heavy metals. This study aimed to determine the mycoremediation capacity of metallophilic fungi isolated from heavy-metal-contaminated soil containing a high Fe(III) concentration (118.40 mg/kg). Four common fungal strains were isolated, including Curvularia lunata, Fusarium equiseti, Penicillium pinophilum, and Trichoderma harzianum. These fungal strains were exposed to gradually increasing concentrations of Fe(III) of 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 mg/L. Sophisticated techniques and tests were employed to investigate the mycoremediation capability, including tolerance index (TI), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and adsorption isotherm. Furthermore, the impacts of initial concentration, pH, and temperature on the Fe(III) removal (%) and uptake capacity (mg/g) of the studied samples were investigated. The results were validated by statistical analysis using one-way ANOVA. It was found that the Fe(III) uptake with different ratios triggered alterations in the Fe(III) tolerance (TI) morphological (SEM), chemical (FTIR), and adsorption capacity properties. The highest Fe(III) tolerance for all studied fungal strains was achieved at 100 mg/L. Moreover, the optimum conditions of Fe(III) removal (%) for all studied fungal strains were within pH 7 and 28 °C, with similar performance at the initial Fe(III) concentration ranging from 50-200 mg/L. At the same time, the maximum Fe(III) uptake was achieved at pH 7, 20 °C, and 200 mg/L. Compared to other strains, the Fe(III) tolerance of T. harzianum was rise in the Fe(III) concentration. The Fe(III) uptake reaction was corroborated by best fitting with the Langmuir model, achieving optimum adsorption capacities of 61.34, 62.90, 63.30, and 72.46 mg/g for C.lunata, F. equiseti, P. pinophilum, T. harzianum, respectively. It can be deduced that the addressed fungi species can be applied in mycoremediation according to the utilized Fe(III) concentrations with more superiority for live T. harzianum.
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Affiliation(s)
- Aya I Tagyan
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Manal M Yasser
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Ahmed M Mousa
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Dalal Hussien M Alkhalifah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Wael N Hozzein
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Marym A Marzouk
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
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16
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Yin L, Zhu J, Kong D, Xu Y, Ge S, Ni L, Li S. Insights into the influence of Fe(III) on the interaction between roxarsone and humic acid using multi-spectroscopic techniques. Spectrochim Acta A Mol Biomol Spectrosc 2023; 289:122213. [PMID: 36527969 DOI: 10.1016/j.saa.2022.122213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/14/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
The influence of Fe(III) on the interaction between roxarsone (ROX) and humic acid (HA) was investigated by multi-spectroscopic techniques. The fluorescence quenching experiment indicated that the fluorescence intensity of HA-ROX was quenched by Fe(III) through a static quenching process. Synchronous fluorescence spectra provided further information concerning the competitive combination between ROX and Fe(III) for HA. The results of the dialysis equilibrium experiment confirmed the existence of Fe(III) (0.05-0.1 mmol/L) promotes the combination of HA and ROX. Binding mechanisms were further characterized by FTIR spectroscopy, and the carboxyl functional group is involved in the binding process of HA/Fe/ROX. In addition, acidic and neutral conditions are more conducive to the combination of ROX and HA/Fe than alkaline conditions. The above discussion is of great significance in understanding the environmental fate of ROX under the coexistence of Fe(III) and HA.
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Affiliation(s)
- Li Yin
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Jiangpeng Zhu
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Desheng Kong
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Ying Xu
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Siyi Ge
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Lixiao Ni
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, School of Environment, Hohai University, Nanjing 210098, China
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China.
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17
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Ye Y, Yang N, Xiao L, Li Q, Pan F, Xia D. Coagulation characteristic and mechanism of Fe(III) salts toward typical Cr(III) complexes in wastewater treatment. Environ Sci Pollut Res Int 2023; 30:30122-30129. [PMID: 36427131 DOI: 10.1007/s11356-022-24366-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Cr(III) complexes are typical pollutants in various industrial wastewater and pose a serious threat to the ecosystem and humans. The coagulation process is commonly used in water treatment plants, yet its removal characteristic and mechanism toward Cr(III) complexes have been rarely reported. In this study, the Fe(III) coagulation process was adopted for the evaluation of Cr(III) complex removal in terms of Cr residual concentration as well as floc size. The results showed that Fe(III) with a dose of 0.8 mM removed more than 80% of total Cr for Cr3+ and Cr(III)-acetate, whereas poor removal rate (~ 50%) was obtained for Cr(III)-citrate under the same conditions. Neutral and alkaline conditions facilitated Cr(III)-acetate removal by Fe(III) coagulation, while limited influence was observed for Cr(III)-citrate with various pH. The main removal mechanism of Cr(III)-acetate was precipitation. Cr(III)-citrate elimination largely relied on the adsorption property and sweeping effect of Fe floc. Moreover, Cr(III)-acetate was easier to be separated from a solution since the generated floc sizes were 270 μm. Flocs that formed in the Cr(III)-citrate treatment were only 0.3 μm, resulting in separation difficulties during the coagulation process. The presence of Cr(III)-acetate and Cr(III)-citrate caused a significant decline in membrane flux. This study provided fundamental knowledge of Fe coagulation treatment in Cr(III) complex-containing wastewater.
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Affiliation(s)
- Yuxuan Ye
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
- Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, China
| | - Ning Yang
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
| | - Lixi Xiao
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
| | - Qiang Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
| | - Fei Pan
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China.
- Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, China.
| | - Dongsheng Xia
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
- Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, China
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18
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Feschyan SM, Simonyan RM, Simonyan GM, Simonyan MA, Manukyan AL. NADPH containing superoxide-producing thermostable complex from raspberry, apricot, grape, and grape seeds: isolation, purification, and properties. Plant Methods 2023; 19:1. [PMID: 36593464 PMCID: PMC9808959 DOI: 10.1186/s13007-022-00978-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND NADPH oxidase (Nox) plays a crucial role in reactive oxygen spices (ROS) production and mediates different diseases' development. Under aerobic conditions, the NADPH-containing protein component of the (NCP)-Fe (III) complex produces O2- continuously and intensively. However, after the removal of Fe (III), the isolated NCP shows only antioxidant properties at the expense of NADPH composite. Based on the fact that the mentioned fruit juices are widely used in everyday life and also in biomedicine, it was aimed to use a universal method: 1. to obtain superoxide generating complex from available and relatively cheap raw materials without using any toxic substances; 2. to isolate, purify and study the components of prooxidant nature: the isoforms of O2--producing NCP-Fe (III) complexes obtained from Armenian fruits (raspberries, apricot, grapes), as well, grape seeds. RESULTS Using a licensed method, for the first time isoforms of the superoxide (O2-) producing a thermostable complex of the NCP component with Fe (III), (NCP-Fe (III)), were isolated and purified from Armenian fruits-raspberries, apricots, grapes, and grapes seeds. The process of isolation and purification of isoforms of these complexes included the following stages of processing: 1. alkaline hydrolysis at pH9,5; 2. their sedimentation at pH4.8; 3. Dissolving of the sediments in water at pH9.5, followed by ion-exchange chromatography on cellulose DE-52, and gel filtration on Sephadex G-100. Further, the heat treatment of the mentioned complexes was carried out. In a lyophilized state, under the anaerobic conditions, the isoforms of the given complexes, hybrid associates (hNCP-Nox), and NCP were stored practically without losing their activity in a mass of 1-1.5 g. CONCLUSIONS Isoforms of O2- -producing complexes are new liquid-phase, thermo-stable prooxidant components found in raspberries, apricots, grapes, and grapes seeds.
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Affiliation(s)
- Sona M Feschyan
- Department of Biology, Yerevan State Medical University After M. Heratsi, Koryun 2, 0025, Yerevan, Armenia
| | - Ruzan M Simonyan
- Laboratory of "Metabolism of Reactive Oxygen", H. Buniatyan Institute of Biochemistry NAS RA, P.Sevag Str., 5/1, 014, Yerevan, Armenia
| | - Gegham M Simonyan
- Laboratory of "Metabolism of Reactive Oxygen", H. Buniatyan Institute of Biochemistry NAS RA, P.Sevag Str., 5/1, 014, Yerevan, Armenia
| | - Maxim A Simonyan
- Laboratory of "Metabolism of Reactive Oxygen", H. Buniatyan Institute of Biochemistry NAS RA, P.Sevag Str., 5/1, 014, Yerevan, Armenia
| | - Ashkhen L Manukyan
- Department of Medical Chemistry, Yerevan State Medical University After M. Heratsi, Koryun 2, 0025, Yerevan, Armenia.
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19
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Mao Y, Liang J, Jiang L, Shen Q, Zhang Q, Liu C, Zheng H, Liao Y, Cao X, Dong H, Ji F. Removal of micro organic pollutants in high salinity wastewater by comproportionation system of Fe(VI)/ Fe(III): Enhancement of chloride and bicarbonate. Water Res 2022; 214:118182. [PMID: 35196621 DOI: 10.1016/j.watres.2022.118182] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
The high concentration of salt in industrial wastewater has a strong inhibitory effect on the removal of pollutants by free radicals. A method has been developed to effectively remove micro organic pollutants in industrial high-salinity wastewater. This study investigated the combination of ferrate(VI) (FeVIO42-, Fe(VI)) and Fe(III) on the reduction of the pollutants in synthetic high-salinity wastewater, while focusing on the effects of major inorganic substances. Whether in synthetic wastewater with or without salinity, Fe(VI)-Fe(III) process exhibited higher pollutants removal rates than Fe(VI). Both chloride (increasing from (2.2 ± 0.1) × 10-2 min-1 to (1.1 ± 0.03) × 10-1 min-1) and bicarbonate (increasing from (2.2 ± 0.1) × 10-2 min-1 to (1.1 ± 0.02) × 10-1 min-1) significantly enhanced the removal of pollutants by the Fe(VI)-Fe(III) process. Chloride changed the ionic strength of Fe(VI), but Fe(III) strengthened the formation of Fe(V)/Fe(IV) from FeO42-, which offset the effect of the decrease of HFeO4-. Bicarbonate complexed Fe(V)/Fe(IV), these complexes enhanced the oxidizing ability of Fe(V)/Fe(IV). Based on the Program Kintecus, Fe(IV) was proposed as the main iron species in Fe(VI)-Fe(III) system, and its concentration was 2 to 3 orders of magnitude higher than Fe(V) at pH 9.0. The enhancement of Fe(VI)-Fe(III) system was observed in the oxidation of pollutant in real wastewater. Overall, the Fe(VI)-Fe(III) process is a new option for treating organic pollutants in industrial high salinity wastewater.
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Affiliation(s)
- Yuanxiang Mao
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Jialiang Liang
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Lei Jiang
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Qiushi Shen
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Qian Zhang
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Caocong Liu
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Hao Zheng
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Yong Liao
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Xuekang Cao
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Huiyu Dong
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China
| | - Fangying Ji
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
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20
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Yuan Y, Wu F, Brigante M, Mailhot G. Enhanced Degradation of Paracetamol by the Fe(III)-Sulfite System under UVA Irradiation. Molecules 2022; 27:molecules27072248. [PMID: 35408645 PMCID: PMC9000444 DOI: 10.3390/molecules27072248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 11/30/2022]
Abstract
The Fe(III)-S(IV) system used for advanced oxidation processes (AOPs) at acidic pH has just been proposed and demonstrated valid for very few contaminants in the last several years. In this work, we investigated the effect of ultraviolet A (UVA) radiation on the degradation efficiency of the Fe(III)/S(IV) system at near-neutral pH. Paracetamol (PARA) was selected as a model contaminant. The influencing factors, such as initial pH and Fe(III)/S(IV) molar ratio on chemical kinetics, and the mechanism of PARA degradation are investigated, with an emphasis on the determination of dominant oxidant species. Our results show that irradiation enhances the PARA degradation by accelerating the decrease of pH to acidic levels, and the optimal pH for the degradation of PARA in the Fe(III)/S(IV)/O2 system was around 4.0. At near-neutral pH, more than 60% of PARA was decomposed within 40 min under irradiation, whereas no significant degradation of PARA was observed using Fe(III)/S(IV) at pH 7.0 without irradiation. Mechanism investigation revealed that sulfate radical (SO4•‒) is the main oxidant species generated and responsible for the PARA degradation under these conditions. This finding may have promising implications in developing a new degradation process for dealing with wastewater at near-neutral pH by the Fe(III)/S(IV)/O2 system under UVA irradiation.
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Affiliation(s)
- Yanan Yuan
- Yichang Atmospheric Pollution Prevention and Control Administrative Center, Yichang 435000, China;
| | - Feng Wu
- Department of Environmental Science, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, China
- Correspondence: (F.W.); (G.M.)
| | - Marcello Brigante
- Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, Clermont Auvergne INP, F-63000 Clermont-Ferrand, France;
| | - Gilles Mailhot
- Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, Clermont Auvergne INP, F-63000 Clermont-Ferrand, France;
- Correspondence: (F.W.); (G.M.)
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21
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Poulopoulos SG, Ulykbanova G, Philippopoulos CJ. Photochemical mineralization of amoxicillin medicinal product by means of UV, hydrogen peroxide, titanium dioxide and iron. Environ Technol 2021; 42:2941-2949. [PMID: 31964229 DOI: 10.1080/09593330.2020.1720300] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 01/12/2020] [Indexed: 06/10/2023]
Abstract
In the present study, the photochemical degradation of amoxicillin and total organic carbon (TOC) removal in pharmaceutical aqueous solutions was studied using UV irradiation, titanium dioxide, hydrogen peroxide and iron in a batch photoreactor operated for 120-150 min. The effect of the initial concentrations of the target compound, hydrogen peroxide and ferric ions and of their combination was examined. It was found that under direct UV photolysis, considerable TOC removals were obtained only when the initial concentration of amoxicillin (AM) was below 100 mg/L. For initial concentration of AM 250 mg/L, the TOC removals achieved were of no practical use (below 5%). The TOC removals achieved in the presence of TiO2 were lower than 20% in all cases. In the presence of hydrogen peroxide in the range of 12.2-146.9 mmol/L and initial AM concentration 250 mg/L, for increasing H2O2 concentrations higher TOC removals were achieved up to the concentration of 73.4 mmol/L H2O2. The presence of even very small amounts of Fe(III) in the solution resulted in significantly increased TOC removals; 2.2 times higher than without Fe(III) after 120 min. Fe(III) presence accelerated dramatically the process during the first 60 min. The origin of Fe(III) ions was not important since practically the same results were obtained whether FeCl3 or Fe(NO3)3 was used as source of ferric ions. Adjusting the initial concentrations of AM, Fe(III) and H2O2, TOC removals above 90% were achieved.
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Affiliation(s)
- Stavros G Poulopoulos
- The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Nur-Sultan, Kazakhstan
- Environmental Science & Technology Group (ESTg), Chemical and Materials Engineering Department, School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | - Gaukhar Ulykbanova
- The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Nur-Sultan, Kazakhstan
- Environmental Science & Technology Group (ESTg), Chemical and Materials Engineering Department, School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | - Constantine J Philippopoulos
- Chemical Process Engineering Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
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22
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Cai M, Quan S, Li J, Wu F, Mailhot G. Calcium Sulfite Solids Activated by Iron for Enhancing As(III) Oxidation in Water. Molecules 2021; 26:1154. [PMID: 33670050 DOI: 10.3390/molecules26041154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/17/2022] Open
Abstract
Desulfurized gypsum (DG) as a soil modifier imparts it with bulk solid sulfite. The Fe(III)-sulfite process in the liquid phase has shown great potential for the rapid removal of As(III), but the performance and mechanism of this process using DG as a sulfite source in aqueous solution remains unclear. In this work, employing solid CaSO3 as a source of SO32-, we have studied the effects of different conditions (e.g., pH, Fe dosage, sulfite dosage) on As(III) oxidation in the Fe(III)-CaSO3 system. The results show that 72.1% of As(III) was removed from solution by centrifugal treatment for 60 min at near-neutral pH. Quenching experiments have indicated that oxidation efficiencies of As(III) are due at 67.5% to HO•, 17.5% to SO5•- and 15% to SO4•-. This finding may have promising implications in developing a new cost-effective technology for the treatment of arsenic-containing water using DG.
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23
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Zhang Z, Guo H, Sun J, Gong X, Wang C, Wang H. Exploration of the biotransformation processes in the biodegradation of phenanthrene by a facultative anaerobe, strain PheF2, with Fe(III) or O 2 as an electron acceptor. Sci Total Environ 2021; 750:142245. [PMID: 33182168 DOI: 10.1016/j.scitotenv.2020.142245] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 06/11/2023]
Abstract
The study of biodegradation of polycyclic aromatic hydrocarbons (PAHs) with metal ions as electron acceptors is still in its infancy. Here, a pure culture of PheF2 sharing 99.79% 16S rRNA-sequence similarity with Trichococcus alkaliphilus, which was recently reported to degrade PAHs, was isolated and found to degrade PAHs with Fe (III) or O2 reduction. Phenanthrene was selected as a model of PAH to study the biodegradation process by PheF2 with Fe (III) or O2 as an electron acceptor. PheF2 exhibited nearly 100%, 37.1%, and 28.5% anaerobic biodegradation of phenanthrene at initial concentrations of 280.7 μM, 280.6 μM, and 281.3 μM, respectively, within 10 days under anaerobic conditions with XAD-7 as a carrier, heptamethylnonane (HMN) as a solution, and nothing, respectively. PheF2 could degrade nearly 100% of the initial phenanthrene concentration of 283.4 μM under aerobic conditions within three days. The initial step of phenanthrene biodegradation by PheF2 involved carboxylation and dioxygenation under anaerobic and aerobic conditions, respectively. The biotransformation processes of phenanthrene degradation by PheF2 with Fe(III) or O2 as an electron acceptor were explored by metabolite and genome analysis. These findings provide an important theoretical support for evaluation of PAHs fate and for PAHs pollution control or remediation in anaerobic and aerobic environments.
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Affiliation(s)
- Zuotao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Haijiao Guo
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiao Sun
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xiaoqiang Gong
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chongyang Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hui Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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24
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Soliman SM, Al-Rasheed HH, Albering JH, El-Faham A. Fe(III) Complexes Based on Mono - and Bis-pyrazolyl- s-triazine Ligands: Synthesis, Molecular Structure, Hirshfeld, and Antimicrobial Evaluations. Molecules 2020; 25:molecules25235750. [PMID: 33291507 PMCID: PMC7730701 DOI: 10.3390/molecules25235750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 11/29/2020] [Accepted: 12/03/2020] [Indexed: 11/16/2022] Open
Abstract
The self-assembly of iron(III) chloride with three pyrazolyl-s-triazine ligands, namely 2,4-bis(3,5-dimethyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)-1,3,5-triazine (PipBPT), 4-(4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazin-2-yl)morpholine (MorphBPT), and 4,4’-(6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-diyl)dimorpholine (bisMorphPT) afforded [Fe(PipBPT)Cl2][FeCl4] (1), [Fe(MorphBPT)Cl2][FeCl4] (2), and [H(bisMorphPT)][FeCl4]. bisMorphPT.2H2O (3), respectively, in good yield. In complexes 1 and 2, the Fe(III) is pentacoordinated with three Fe-N interactions from the pincer ligand and two coordinated chloride anions in the inner sphere, and FeCl4¯ in the outer sphere. Complex 3 is comprised of one protonated ligand as cationic part, one FeCl4¯ anion, and one neutral bisMorphPT molecule in addition to two crystallized water molecules. Analysis of molecular packing using Hirshfeld calculations indicated that H…H and Cl…H are the most important in the molecular packing. They comprised 40.1% and 37.4%, respectively in 1 and 32.4% and 37.8%, respectively in 2. Complex 1 exhibited the most bioactivity against the tested microbes while 3 had the lowest bioactivity. The bisMorphPT and MorphBPT were inactive towards the tested microbes while PipBPT was active. As a whole, the Fe(III) complexes have enhanced antibacterial and antifungal activities as compared to the free ligands.
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Affiliation(s)
- Saied M. Soliman
- Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
- Correspondence: (S.M.S.); (A.E.-F.)
| | - Hessa H. Al-Rasheed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Jörg H. Albering
- Graz University of Technology, Mandellstr. 11/III, A-8010 Graz, Austria;
| | - Ayman El-Faham
- Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
- Correspondence: (S.M.S.); (A.E.-F.)
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25
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Xiong X, Zhang J, Wang Z, Liu C, Xiao W, Han J, Shi Q. Simultaneous Multiplexed Detection of Protein and Metal Ions by a Colorimetric Microfluidic Paper-based Analytical Device. Biochip J 2020; 14:429-437. [PMID: 33144923 PMCID: PMC7594977 DOI: 10.1007/s13206-020-4407-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 09/14/2020] [Indexed: 11/25/2022]
Abstract
In order to improve the efficiency of disease diagnosis and environmental monitoring, it is desirable to detect the concentration of proteins and metal ions simultaneously, since the current popular diagnostic platform can only detect proteins or metal ions independently. In this work, we developed a colorimetric microfluidic paper-based analytical device (µPAD) for simultaneous determination of protein (bovine serum albumin, BSA) and metal ions [Fe(III) and Ni(II)]. The µPAD consisted of one central zone, ten reaction zones and ten detection zones in one device, in which reaction solutions were effectively optimized for different types of chromogenic reactions. Fe(III), Ni(II) and BSA can be easily identified by the colored products, and their concentrations are in good accordance with color depth based on the established standard curves. The detection limits are 0.1 mM for Fe(III), 0.5 mM for Ni(II) and 1µM for BSA, respectively. Best of all, we demonstrated the efficiency of the µPAD with accurate detection of Fe(III), Ni (II) and BSA from river water samples within 15 minutes. The µPAD detection is efficient, instrument-free, and easy-to-use, holding great potential for simultaneous detection of cross type analytes in numerous diagnostic fields.
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Affiliation(s)
- Xiaolu Xiong
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China.,Micronano Centre, Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing, 100081 China
| | - Junlin Zhang
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China
| | - Zhou Wang
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China
| | - Chenchen Liu
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China
| | - Wende Xiao
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China.,Micronano Centre, Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing, 100081 China
| | - Junfeng Han
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China.,Micronano Centre, Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing, 100081 China
| | - Qingfan Shi
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing, 100081 China
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26
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Cavaleiro AJ, Guedes AP, Silva SA, Arantes AL, Sequeira JC, Salvador AF, Sousa DZ, Stams AJM, Alves MM. Effect of Sub-Stoichiometric Fe(III) Amounts on LCFA Degradation by Methanogenic Communities. Microorganisms 2020; 8:microorganisms8091375. [PMID: 32906848 PMCID: PMC7564256 DOI: 10.3390/microorganisms8091375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 02/06/2023] Open
Abstract
Long-chain fatty acids (LCFA) are common contaminants in municipal and industrial wastewater that can be converted anaerobically to methane. A low hydrogen partial pressure is required for LCFA degradation by anaerobic bacteria, requiring the establishment of syntrophic relationships with hydrogenotrophic methanogens. However, high LCFA loads can inhibit methanogens, hindering biodegradation. Because it has been suggested that anaerobic degradation of these compounds may be enhanced by the presence of alternative electron acceptors, such as iron, we investigated the effect of sub-stoichiometric amounts of Fe(III) on oleate (C18:1 LCFA) degradation by suspended and granular methanogenic sludge. Fe(III) accelerated oleate biodegradation and hydrogenotrophic methanogenesis in the assays with suspended sludge, with H2-consuming methanogens coexisting with iron-reducing bacteria. On the other hand, acetoclastic methanogenesis was delayed by Fe(III). These effects were less evident with granular sludge, possibly due to its higher initial methanogenic activity relative to suspended sludge. Enrichments with close-to-stoichiometric amounts of Fe(III) resulted in a microbial community mainly composed of Geobacter, Syntrophomonas, and Methanobacterium genera, with relative abundances of 83-89%, 3-6%, and 0.2-10%, respectively. In these enrichments, oleate was biodegraded to acetate and coupled to iron-reduction and methane production, revealing novel microbial interactions between syntrophic LCFA-degrading bacteria, iron-reducing bacteria, and methanogens.
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Affiliation(s)
- Ana J. Cavaleiro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Correspondence: ; Tel.: +35-1253604423
| | - Ana P. Guedes
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Sérgio A. Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Ana L. Arantes
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - João C. Sequeira
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Andreia F. Salvador
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Diana Z. Sousa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Laboratory of Microbiology, Wageningen University & Research, 6708 WE Wageningen, The Netherlands
| | - Alfons J. M. Stams
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Laboratory of Microbiology, Wageningen University & Research, 6708 WE Wageningen, The Netherlands
| | - M. Madalena Alves
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
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27
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van Grinsven S, Sinninghe Damsté JS, Villanueva L. Assessing the Effect of Humic Substances and Fe(III) as Potential Electron Acceptors for Anaerobic Methane Oxidation in a Marine Anoxic System. Microorganisms 2020; 8:E1288. [PMID: 32846903 PMCID: PMC7564286 DOI: 10.3390/microorganisms8091288] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/06/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
Marine anaerobic methane oxidation (AOM) is generally assumed to be coupled to sulfate reduction, via a consortium of anaerobic methane-oxidizing archaea (ANME) and sulfate-reducing bacteria (SRB). ANME-1 are, however, often found as single cells, or only loosely aggregated with SRB, suggesting they perform a form of AOM independent of sulfate reduction. Oxidized metals and humic substances have been suggested as potential electron acceptors for ANME, but up to now, AOM linked to reduction of these compounds has only been shown for the ANME-2 and ANME-3 clades. Here, the effect of the electron acceptors anthraquinone-disulfonate (AQDS), a humic acids analog, and Fe3+ on anaerobic methane oxidation were assessed by incubation experiments with anoxic Black Sea water containing ANME-1b. Incubation experiments with 13C-methane and AQDS showed a stimulating effect of AQDS on methane oxidation. Fe3+ enhanced the ANME-1b abundance but did not substantially increase methane oxidation. Sodium molybdate, which was added as an inhibitor of sulfate reduction, surprisingly enhanced methane oxidation, possibly related to the dominant abundance of Sulfurospirillum in those incubations. The presented data suggest the potential involvement of ANME-1b in AQDS-enhanced anaerobic methane oxidation, possibly via electron shuttling to AQDS or via interaction with other members of the microbial community.
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Affiliation(s)
- Sigrid van Grinsven
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, 1797 SZ ’t Horntje, Texel, The Netherlands; (J.S.S.D.); (L.V.)
| | - Jaap S. Sinninghe Damsté
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, 1797 SZ ’t Horntje, Texel, The Netherlands; (J.S.S.D.); (L.V.)
- Department of Earth Sciences, Faculty of Geosciences, Utrecht University, 3584 CB Utrecht, The Netherlands
| | - Laura Villanueva
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, 1797 SZ ’t Horntje, Texel, The Netherlands; (J.S.S.D.); (L.V.)
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28
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Wen T, Liu M, Chen S, Li Q, Du Y, Zhou T, Ritchie C, Zhang J. 2D Boron Imidazolate Framework Nanosheets with Electrocatalytic Applications for Oxygen Evolution and Carbon Dioxide Reduction Reaction. Small 2020; 16:e1907669. [PMID: 32529762 DOI: 10.1002/smll.201907669] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Ultrathin 2D materials possess unique properties that translate to enhanced efficiency as electrocatalysts, stimulating research toward methodologies that support their preparation. Herein, a two-step strategy is reported that involves the preparation of the new boron imidazolate framework (BIF-73) which is subsequently utilized as a precursor to yield the crystalline 2D nanosheet material (Fe@BIF-73-NS) via post-synthetic modification. This new electrocatalytic material stabilizes ultra-small (Fe2 O3 ) fragments resulting in an excellent electrocatalytic performance for the oxygen evolution reaction (OER: lower overpotential with 291 mV at the current density of 10 mA cm-2 ) and carbon dioxide reduction reaction (faradaic efficiency of CO reaching 88.6% at -1.8 V vs Ag/AgCl) without the need for noble metals. Additionally, theoretical calculations and microscopy reveal that the superior OER performance can be attributed to the increased exposure of binding sites within the material to which the catalytically active Fe3+ centers are bound through a post-synthetic modification procedure. A red-shift of the Fermi level around the valence band is observed and is proposed to be a result of the aforementioned interactions. This work opens an avenue toward the development of 2D functional metal organic framework nanosheets for energy conversion applications.
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Affiliation(s)
- Tian Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Min Liu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Shumei Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Qiaohong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
| | - Tianhua Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
| | - Chris Ritchie
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
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Vashisht D, Sharma E, Kaur M, Vashisht A, Mehta SK, Singh K. Solvothermal assisted phosphate functionalized graphitic carbon nitride quantum dots for optical sensing of Fe ions and its thermodynamic aspects. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117773. [PMID: 31740119 DOI: 10.1016/j.saa.2019.117773] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
A facile method has been proposed for the determination of Ferrous (Fe(II)) and Ferric (Fe(III)) ions using phosphate functionalized graphitic carbon nitride quantum dots (Ph-g-CNQDs) in an aqueous medium. The easy solvothermal procedure using oleic acid as the solvent yielded the Ph-g-CNQDs in less than 30 min. The communication among the Fe(II) and Fe(III) with Ph-g-CNQDs caused quenching of the blue Ph-g-CNQDs fluorescence signals. The Ph-g-CNQDs have been successfully characterized using X-ray diffractometry (XRD), X-ray Photoelectron spectroscopy (XPS), Transmission electron microscopy (TEM), Fourier Transform Infrared (FT-IR) spectroscopy, UV-vis absorption and photoluminescence spectrophotometry. The temperature dependent behavior of the Ph-g-CNQDs was also observed and various thermodynamic parameters have also been evaluated. The Ph-g-CNQDs displayed an excellent quantum yield of 60.54% using quinine sulfate as the standard reference. The developed method has been applied to water samples collected from different sources and good recoveries were observed which entitles this method as apt for real time monitoring.
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Affiliation(s)
- Devika Vashisht
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Ekta Sharma
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi 174103, India
| | - Manpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Aseem Vashisht
- Department of Physics, Panjab University, Chandigarh 160014, India
| | - S K Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Kulvinder Singh
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi 174103, India.
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Li Y, Zhao R, Wang L, Niu L, Wang C, Hu J, Wu H, Zhang W, Wang P. Silver nanoparticles and Fe(III) co-regulate microbial community and N 2O emission in river sediments. Sci Total Environ 2020; 706:135712. [PMID: 31785899 DOI: 10.1016/j.scitotenv.2019.135712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/20/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
The effects of environmental concentration silver nanoparticles (ecAgNPs) on microbial communities and the nitrogen cycling in river sediments remain largely uncharacterized. As a fundamental component of sediments, Fe(III) can interact with AgNPs and participate in nitrogen transformation processes. N2O is an important intermediate in nitrogen transformation processes and can be a potent greenhouse gas with significant environmental effects. However, the impacts of the co-existence of AgNPs and Fe(III) on microbial communities and N2O emission in river sediments are still unclear. In the present study, mesocosm experiments were conducted to assess the changes of microbial communities and N2O emission in response to the co-existence of AgNPs and environmental concentration Fe(III). Our results revealed that the microbial community diversity and N2O emission in river sediments responded differently to ecAgNPs (0.05 mg/kg) and high-polluting concentration AgNPs (hcAgNPs, 5 mg/kg), which was further regulated by the environmental concentration Fe(III) (1 mg/g and 10 mg/g). After ecAgNPs treatments, a marked increase was observed in microbial diversity compared to hcAgNPs treatments, regardless of the Fe(III) concentration in the sediment. The β-NTI index indicated that AgNPs had stronger impacts on phylogenetic distance of bacterial communities in sediments containing 1 mg/g Fe(III) than that containing 10 mg/g Fe(III). In sediments containing 1 mg/g Fe(III), ecAgNPs did not affect N2O emission, but hcAgNPs significantly inhibited the emission of N2O. However, in sediments containing 10 mg/g Fe(III), N2O emission was significantly stimulated upon exposure to ecAgNPs, but the inhibition effect of hcAgNPs was barely observed. Functional prediction and real-time PCR analyses indicated that AgNPs and Fe(III) predominantly affected N2O emissions by affecting the abundance of the nirK gene. Our results provide new insights into the ecological impacts of the co-existence of environmental concentration AgNPs and Fe(III) in altering microbial communities and nitrogen transformation functions in river sediments.
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Affiliation(s)
- Yi Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Ruiqi Zhao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Longfei Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Lihua Niu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China.
| | - Chao Wang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China.
| | - Jiaxin Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Hainan Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Wenlong Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
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Tsukamoto S, Takeuchi T, Tani A, Miyairi Y, Yokoyama Y. ESR and Radiocarbon Dating of Gut Strings from Early Plucked Instruments. Methods Protoc 2020; 3:mps3010013. [PMID: 32012965 PMCID: PMC7189657 DOI: 10.3390/mps3010013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/17/2020] [Accepted: 01/17/2020] [Indexed: 12/03/2022] Open
Abstract
Early European plucked instruments have recently experienced a great revival, but a few aspects remain unknown (e.g., the gauge of gut strings). Here we report, for the first time, that the electron spin resonance (ESR) signal intensity of oxidized iron, Fe(III), from gut strings at g = 2 increases linearly with age within a few hundred years. The signal increase in the remaining old strings on early instruments can be used to judge if they are as old as or younger than the instrument. Obtaining the authenticity information of gut strings contributes to the revival of the old instruments and the music.
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Affiliation(s)
- Sumiko Tsukamoto
- Leibniz Institute for Applied Geophysics, Stilleweg 2, 30655 Hannover, Germany
- Correspondence:
| | - Taro Takeuchi
- The consortium for Guitar Research, Sidney Sussex College, Cambridge CB2 3HU, UK;
| | - Atsushi Tani
- Graduate School of Human Development and Environment, Kobe University, Kobe 657-8501, Japan;
| | - Yosuke Miyairi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan; (Y.M.); (Y.Y.)
| | - Yusuke Yokoyama
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan; (Y.M.); (Y.Y.)
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32
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Chen Y, Lin C, Zhou Y, Long L, Li L, Tang M, Liu Z, Pozdnyakov IP, Huang LZ. Transformation of roxarsone during UV disinfection in the presence of ferric ions. Chemosphere 2019; 233:431-439. [PMID: 31176907 DOI: 10.1016/j.chemosphere.2019.05.288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/23/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
The transformation of roxarsone (ROX) during UV disinfection with Fe(III) has been investigated. Fe(OH)2+, as the main Fe(III) species at pH = 3, produces HO under UV irradiation leading to the oxidation of ROX. Dissolved oxygen plays a very important role in the continuous conversion of generated Fe2+ to Fe3+, which ensures a Fe(III)-Fe(II) cycle in the system. The presence of Cl-/HCO3-/NO3- has little influence on the ROX transformation, whereas PO43- achieves an obvious inhibitory effect. The transformation of ROX leads to the formation of inorganic arsenic consisting of a much higher amount of As(V) than As(III). LC-MS analysis shows that phenol, o-nitrophenol and arsenic acid were the main transformation products. Both the radical scavenger experiment and electron spin resonance data confirm that the HO is responsible for ROX transformation. The toxic transformation products are found to have potential environmental risks for the natural environment, organisms and human beings.
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Affiliation(s)
- Yiqun Chen
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China; Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province, Wuhan University, Wuhan, 430072, China
| | - Chuanjing Lin
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China; State Key Lab Urban Water Resource & Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Yiyi Zhou
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China
| | - Li Long
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China
| | - Lili Li
- Central Laboratory, Renmin Hospital, Wuhan University, Wuhan, 430060, China
| | - Min Tang
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China; Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province, Wuhan University, Wuhan, 430072, China
| | - Zizheng Liu
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China; Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province, Wuhan University, Wuhan, 430072, China.
| | - Ivan P Pozdnyakov
- V.V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya str., 630090, Novosibirsk, Russian Federation; Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russian Federation
| | - Li-Zhi Huang
- School of Civil Engineering, Wuhan University, Wuhan, 430072, China; Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province, Wuhan University, Wuhan, 430072, China.
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Batule BS, Lee CY, Park KS, Park HG. Polymerization-sensitive switch-on monomer for terminal transferase activity assay. Artif Cells Nanomed Biotechnol 2019; 47:256-259. [PMID: 30688096 DOI: 10.1080/21691401.2018.1552593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We herein describe a simple but efficient method for the determination of terminal transferase (TdT) activity, which relies on our finding that Fe(III)-quenched boron-dipyrromethene (BODIPY)-ATP is utilized as a switch-on monomer for polymerization and enables the facile synthesis of fluorescence oligonucleotides without additional, post-processing steps. As TdT carries out the synthesis of DNA by adding the monomers into growing chains, Fe(III) is displaced from BODIPY with the release of pyrophosphate group, which consequently leads to the generation of highly fluorescent long oligonucleotides. With this strategy, we selectively detected the TdT activity with high sensitivity. In addition, its practical applicability was successfully demonstrated by determining TdT activities in human serum.
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Affiliation(s)
- Bhagwan S Batule
- a Department of Chemical and Biomolecular Engineering (BK21+ Program) , KAIST , Daejeon , Republic of Korea
| | - Chang Yeol Lee
- a Department of Chemical and Biomolecular Engineering (BK21+ Program) , KAIST , Daejeon , Republic of Korea
| | - Ki Soo Park
- b Department of Biological Engineering, College of Engineering , Konkuk University , Seoul , Republic of Korea
| | - Hyun Gyu Park
- a Department of Chemical and Biomolecular Engineering (BK21+ Program) , KAIST , Daejeon , Republic of Korea
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Xu J, Yin Y, Tan Z, Wang B, Guo X, Li X, Liu J. Enhanced removal of Cr(VI) by biochar with Fe as electron shuttles. J Environ Sci (China) 2019; 78:109-117. [PMID: 30665629 DOI: 10.1016/j.jes.2018.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/11/2018] [Accepted: 07/17/2018] [Indexed: 06/09/2023]
Abstract
Biochar is extensively used as an effective soil amendment for environmental remediation. In addition to its strong contaminant sorption capability, biochar also plays an important role in chemical transformation of contaminant due to its inherent redox-active moieties. However, the transformation efficiency of inorganic contaminants is generally very limited when the direct adsorption of contaminants on biochar is inefficient. The present study demonstrates the role of Fe ion as an electron shuttle to enhance Cr(VI) reduction by biochars. Batch experiments were conducted to examine the effects of Fe(III) levels, pyrolysis temperature of biochar, initial solution pH, and biochar dosage on the efficiency of Cr(VI) removal. Results showed a significant enhancement in Cr(VI) reduction with an increase in Fe(III) concentration and a decrease of initial pH. Biochar produced at higher pyrolysis temperatures (e.g., 700°C) favored Cr(VI) removal, especially in the presence of Fe(III), while a higher biochar dosage proved unfavorable likely due to the agglomeration or precipitation of biochar. Speciation analysis of Fe and Cr elements on the surface of biochar and in the solution further confirmed the role of Fe ion as an electron shuttle between biochar and Cr(VI). The present findings provide a potential strategy for the advanced treatment of Cr(VI) at low concentrations as well as an insight into the environmental fate of Cr(VI) and other micro-pollutants in soil or aqueous compartments containing Fe and natural or engineered carbonaceous materials.
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Affiliation(s)
- Jingwen Xu
- School of Environmental Sciences, Liaoning University, Shenyang, Liaoning 110036, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yongguang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhiqiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Bowen Wang
- School of Environmental Sciences, Liaoning University, Shenyang, Liaoning 110036, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaoru Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Li
- School of Environmental Sciences, Liaoning University, Shenyang, Liaoning 110036, China.
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Singh K, Kumar A. Kinetics of complex formation of Fe(III) with caffeic acid: Experimental and theoretical study. Spectrochim Acta A Mol Biomol Spectrosc 2019; 211:148-153. [PMID: 30530068 DOI: 10.1016/j.saa.2018.11.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 11/25/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Kinetic study on the complexation of caffeic acid with ferric chloride was performed in aqueous solution at pH 9.0. The complex was characterized by IR, UV-Vis spectroscopy and FE-SEM techniques. Kinetic data were obtained and used to model the reaction kinetics for the disappearance of the caffeic acid. The operational variables have been studied in the temperature range from 25 to 45 °C, initial iron and caffeic acid concentration from 0.6 mg/100 ml (ranging from 2.0 ml to 8 ml/100 ml). The complexation reaction was found to be a first-order with rate constants for k1 (formation) 4.7 × 10-3 s-1. Additionally, the effect of concentration and temperature on the complexation reaction was investigated. Apparent kinetic parameters of the complex formation of Fe(III) with caffeic acid were found as; pre-exponential factor A (-1.17 min-1), enthalpy of activation (ΔH°)# (-2188 J mol-1), entropy of activation, (ΔS°)# (-7.34 J mol-1 K-1) and Gibbs free energy of activation, (ΔG°)#(-0.68 J). The apparent activation energy of the complexation reaction was evaluated to be 289.29 J mol-1 which is consistent with the chemistry of Fe(III) with polyphenols which are supposed to mimic the interaction of Fe(III) with transferrin in biological media. Various theoretical parameters of the studied complex such as hardness, electronegativity, softness, total energy, dipole moment and point group symmetry were calculated employing Density functional theory (DFT) and found as 0.04465, 0.2130, 22.39, 0.5201 × 10-8 eV, 15.13 Debye, and C1, respectively.
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Affiliation(s)
- Kaman Singh
- Department of Chemistry, School of Physical and Decision Science, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow 226025, India.
| | - Ajay Kumar
- Department of Chemistry, School of Physical and Decision Science, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow 226025, India
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Anwar A, Minhaz A, Hussain SS, Anwar A, Simjee SU, Ishaq M, Khan NA, Shah MR. Pyrazinium thioacetate capped gold nanoparticles as Fe(III) sensor and Fe(III) marked anti-proliferating agent in human neuroblastoma cells. Spectrochim Acta A Mol Biomol Spectrosc 2019; 206:135-140. [PMID: 30096697 DOI: 10.1016/j.saa.2018.07.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/27/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
Gold nanoparticles (AuNPs) stabilized by new cationic 1‑(3‑(acetylthio)propyl)pyrazin‑1‑ium ligand (PPTA) were synthesized. AuNPs stabilized by PPTA (PPTA-AuNPs) were found to be spherical and polydispersed with the average size of 60 nm. Human neuroblastoma (SHSY-5Y) cells permeability of PPTA-AuNPs was found to be a key feature to study the intracellular quenching of Fe(III) proliferative activity. In vitro MTT assay revealed non-cytotoxicity of PPTA and PPTA-AuNPs at 100 μM concentration, while treatment of 100 μM of Fe(III) with SHSY-5Y cells resulted into higher cells viability. Contrary, a mixture of 1:1 Fe(III) with PPTA-AuNPs showed no change in the viability of cells at same concentration which suggests the intracellular complexation and recognition of Fe(III) by PPTA-AuNPs. AFM morphological analysis of SHSY-5Y cells also supported the MTT assay results, and it is safe to conclude that PPTA-AuNPs can be used as Fe(III) probes in living cells. In addition, Fe(III) caused a significant decrease in the absorbance of surface plasmon resonance (SPR) band of PPTA-AuNPs in a wide range of concentration and pH, with limit of detection 4.3 μM. Moreover, the specific response of PPTA-AuNPs towards Fe(III) was unaffected by the interference of other metals and components of real samples of tap water.
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Affiliation(s)
- Ayaz Anwar
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya 47500, Selangor, Malaysia; H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
| | - Aaliya Minhaz
- Department of Chemistry, Shaheed Benazir Bhutto Women University Peshawar, Peshawar 25120, Khyber Pakhtoon Khwa, Pakistan
| | - Syed Saad Hussain
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Areeba Anwar
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Shabana Usman Simjee
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Muhammad Ishaq
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Khyber Pakhtoon Khwa, Pakistan
| | - Naveed Ahmed Khan
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya 47500, Selangor, Malaysia
| | - Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
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Ding M, Liu T, Zhang Y, Cai Z, Yang Y, Yuan Y. Effect of Fe(III) on the positive electrolyte for vanadium redox flow battery. R Soc Open Sci 2019; 6:181309. [PMID: 30800377 PMCID: PMC6366179 DOI: 10.1098/rsos.181309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
It is important to study the effect of Fe(III) on the positive electrolyte, in order to provide some practical guidance for the preparation and use of vanadium electrolyte. The effect of Fe(III) on the thermal stability and electrochemical behaviour of the positive electrolyte for the vanadium redox flow battery (VRFB) was investigated. When the Fe(III) concentration was above 0.0196 mol l-1, the thermal stability of V(V) electrolyte was impaired, the diffusion coefficient of V(IV) species decreased from (2.06-3.33) × 10-6 cm2 s-1 to (1.78-2.88) × 10-6 cm2 s-1, and the positive electrolyte exhibited a higher electrolyte resistance and a charge transfer resistance. Furthermore, Fe(III) could result in the side reaction and capacity fading, which would have a detrimental effect on battery application. With the increase of Fe(III), the collision probability of vanadium ions with Fe(III) and the competition with the redox reaction was aggravated, which would interfere with the electrode reaction, the diffusion of vanadium ions and the performance of VRFB. Therefore, this study provides some practical guidance that it is best to bring the impurity of Fe(III) below 0.0196 mol l-1 during the preparation and use of vanadium electrolyte.
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Affiliation(s)
- Muqing Ding
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
| | - Tao Liu
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
| | - Yimin Zhang
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei Province, People's Republic of China
| | - Zhenlei Cai
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
| | - Yadong Yang
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
| | - Yizhong Yuan
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Provincial Engineering Technology Research Center of Highly Efficient Cleaning Utilization for Shale Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
- Hubei Collaborative Innovation Center for Highly Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, People's Republic of China
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Wang Y, Yue Q, Tao L, Zhang C, Li CZ. Fluorometric determination of hydroquinone by using blue emitting N/S/P-codoped carbon dots. Mikrochim Acta 2018; 185:550. [PMID: 30443788 DOI: 10.1007/s00604-018-3082-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/01/2018] [Indexed: 01/06/2023]
Abstract
N/S/P-codoped carbon dots (CDs) are shown to be a viable fluorescent probe in a turn-off-on fluorometric assay for hydroquinone (HQ). The preparation of CDs was carried out using a one-step hydrothermal reaction starting with glyoxal and isocarbophos. The method is based on the formation of ground state complexes between CD and Fe(III) which leads to quenching of blue fluorescence (with excitation/emission peaks at 363/448 nm). On addition of HQ, it will be oxidized by Fe(III) upon which fluorescence recovers. This turn-off-on system can be utilized to quantify HQ. A linear relationship exists between fluorescence recovery and HQ concentration in range between 0.56 and 375 μM. The limit of detection is 0.16 μM. The assay was successfully applied to the determination of HQ in spiked water samples and developer samples. Graphical abstract Fluorometric determination of hydroquinone (with good selectivity over catechol and resorcinol) by using blue-emitting N/S/P-codoped carbon dots and the quenching effect of Fe(III).
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Affiliation(s)
- Yongping Wang
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, China
| | - Qiaoli Yue
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, China.
| | - Lixia Tao
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, China
| | - Cong Zhang
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, China
| | - Chen-Zhong Li
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, China. .,Nanobioengineering/Bioelectronics Laboratory, Department of Biomedical Engineering, Florida International University, Miami, FL, 33174, USA.
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Lu X, Liu C, Wang Z, Yang J, Xu M, Dong J, Wang P, Gu J, Cao F. Nitrogen-Doped Carbon Nanoparticles Derived from Silkworm Excrement as On⁻Off⁻On Fluorescent Sensors to Detect Fe(III) and Biothiols. Nanomaterials (Basel) 2018; 8:E443. [PMID: 29914212 PMCID: PMC6027355 DOI: 10.3390/nano8060443] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 01/19/2023]
Abstract
On⁻off⁻on fluorescent sensors based on emerging carbon nanoparticles (CNPs) or carbon dots (CDs) have attracted extensive attention for their convenience and efficiency. In this study, dumped silkworm excrement was used as a novel precursor to prepare fluorescent nitrogen-doped CNPs (N-CNPs) through hydrothermal treatment. The obtained N-CNPs showed good photoluminescent properties and excellent water dispersibility. Thus, they were applied as fluorescence “on⁻off⁻on” probes for the detection of Fe(III) and biothiols. The “on⁻off” process was achieved by adding Fe(III) into N-CNP solution, which resulted in the selective fluorescence quenching, with the detection limit of 0.20 μM in the linear range of 1⁻500 μM. Following this, the introduction of biothiols could recover the fluorescence efficiently, in order to realize the “off⁻on” process. By using glutathione (GSH) as the representative, the linear range was in the range of 1⁻1000 μM, and the limit of detection was 0.13 μM. Moreover, this useful strategy was successfully applied for the determination of amounts of GSH in fetal calf serum samples.
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Affiliation(s)
- Xingchang Lu
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Chen Liu
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Zhimin Wang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Junyi Yang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Mengjing Xu
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Jun Dong
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ping Wang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Jiangjiang Gu
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Feifei Cao
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
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Singh K, Kumar A. Kinetics of complex formation of Fe(III) with syringic acid: Experimental and theoretical study. Food Chem 2018; 265:96-100. [PMID: 29884401 DOI: 10.1016/j.foodchem.2018.05.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 11/23/2022]
Abstract
Kinetic study on the complexation of syringic acid with Fe(III) was described in aqueous solution at pH 9.0 together with a reappraisal of spectral evidence for chelate formation. The complexation reaction was found to be a first-order with rate constants for k1 (formation) 3.67 × 10-2 min-1. Additionally, the effect of concentration and temperature on the complexation reaction was investigated. The gustatory properties of the isolated complex were investigated and complex showed no metallic taste. The isolated complex was stable at pH 9.0. The apparent activation energy of the complexation reaction was evaluated to be 168 kcal/mol. The total iron content was determined in the isolated complex by AAS technique and was found 0.0073/100 ml. The specific rotation of the complex was found at -85°.
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Zhao J, Xu L, Liang Q, Sun Q, Chen C, Zhang Y, Ding Y, Zhou P. Metal chelator EGCG attenuates Fe(III)-induced conformational transition of α-synuclein and protects AS-PC12 cells against Fe(III)-induced death. J Neurochem 2017; 143:136-146. [PMID: 28792609 DOI: 10.1111/jnc.14142] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 11/29/2022]
Abstract
The fibrillation and aggregation of α-synuclein (AS), along with the conformational transition from random coil to β-sheet, are the critical steps in the development of Parkinson's disease (PD). It is acknowledged that iron accumulation in the brain may lead to the fibrillation of AS. However, (-)-epigallocatechin gallate (EGCG) can penetrate the blood-brain barrier, chelate metal ions, and inhibit the fibrillation of amyloid proteins. Therefore, EGCG is warranted to be investigated for its potential to cure amyloid-related diseases. In the present work, we sought to study the effects of EGCG on Fe(III)-induced fibrillation of AS on both molecular and cellular levels. We demonstrate that Fe(III) interacts with the amino residue of Tyr and Ala of AS, then accelerates the fibrillation of AS, and increases intracellular reactive oxygen species (ROS) in the AS transduced-PC12 cells (AS-PC12 cells). However, EGCG significantly inhibits this process by chelating Fe(III) and protects AS-PC12 cells against the toxicity induced by ROS and β-sheet-enriched AS fibrils. These findings yield useful information that EGCG might be a promising drug to prevent and treat the neurodegenerative diseases.
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Affiliation(s)
- Juan Zhao
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Lihui Xu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Qingnan Liang
- Department of Physiology and Biophysics, School of Life Sciences, Fudan University, Shanghai, China
| | - Qing Sun
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Congheng Chen
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Yuan Zhang
- Department of Medicine, St Vincent's Hospital, The University of Melbourne, Fitzroy, Vic., Australia
| | - Yu Ding
- Department of Physiology and Biophysics, School of Life Sciences, Fudan University, Shanghai, China
| | - Ping Zhou
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
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Chen J, Wang Y, Qian Y, Huang T. Fe(III)-promoted transformation of β-lactam antibiotics: Hydrolysis vs oxidation. J Hazard Mater 2017; 335:117-124. [PMID: 28437695 DOI: 10.1016/j.jhazmat.2017.03.067] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 03/16/2017] [Accepted: 03/31/2017] [Indexed: 05/18/2023]
Abstract
The widely used β-lactam antibiotics are susceptible to oxidative and/or hydrolytic degradation promoted by some metal ions (e.g., Cu(II)). Ferric ions (Fe(III)) are among the most common metal ions, but their role in the environmental transformation and fate of β-lactam antibiotics is still unknown. This study elucidates that Fe(III) can promote degradation of β-lactam antibiotics under environmental aquatic conditions. Degradation rate constants of ampicillin (AMP) linearly increased with increasing Fe(III) concentration, but were independent of AMP concentration when AMP was higher than Fe(III) concentration. Neutral pH was most favorable for Fe(III)-promoted degradation of AMP, and the promoted degradation was also significant in real surface water and wastewater matrix. Among the various β-lactam antibiotics, Fe(III)-promoted degradation of penicillins was faster than that of cephalosporins. Product analysis indicated that only two isomers of hydrolysis products were observed without detection of oxidation products. The Fe(III)-promoted degradation likely occurred via complexation of β-lactam antibiotics with carboxyl group and tertiary nitrogen, and then enhancing the hydrolytic cleavage of β-lactam ring. This study is among the first to identify the role of Fe(III) in the degradation of β-lactam antibiotics and elucidate the mechanism. The new findings indicate iron species are among the factors affecting the environmental fate of β-lactam antibiotics.
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Affiliation(s)
- Jiabin Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China
| | - Ying Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China
| | - Yajie Qian
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Tianyin Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China.
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Shoueir KR, Atta AM, Sarhan AA, Akl MA. Synthesis of monodisperse core shell PVA@P(AMPS-co-NIPAm) nanogels structured for pre-concentration of Fe(III) ions. Environ Technol 2017; 38:967-978. [PMID: 27691659 DOI: 10.1080/09593330.2016.1215351] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
Core shell-structured poly(vinyl alcohol) @ poly(2-acrylamido-2-methyl-1-propane-sulfonic acid-co-N-isopropylacrylamide) PVA@P(AMPS-co-NIPAm) spheres are synthesized. The well-defined PVA@P(AMPS-co-NIPAm) core shell nanogels with diameter nearly 30 nm enriches Fe(III), and the nanogels are characterized by FT-IR, TEM, SEM and X-ray diffraction (XRD). The many factors affecting adsorption were successfully investigated. The maximum capacity of Fe(III) ions was 320 (mg/g) for PVA@P(90AMPS-co-10NIPAm) (wt.: wt%). The equilibrium data matching well with the Langmuir model and the pseudo-second-order form described the adsorption process better than the pseudo-first-order model. Findings of the present study highlight using a simple synthesis of PVA@P(AMPS-co-NIPAm) nanogels as superior and recyclable nanoadsorbents.
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Affiliation(s)
- Kamel R Shoueir
- a Polymer Laboratory, Chemistry Department, Faculty of Science , Mansoura University , Mansoura , Egypt
| | - Ayman M Atta
- b Chemistry Department , College of Science, King Saud University , Riyadh , Saudi Arabia
| | - Ali A Sarhan
- c Chemistry Department , Mansoura University , Mansoura , Egypt
| | - Magda A Akl
- c Chemistry Department , Mansoura University , Mansoura , Egypt
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Fu X, Gu X, Lu S, Sharma VK, Brusseau ML, Xue Y, Danish M, Fu GY, Qiu Z, Sui Q. Benzene oxidation by Fe(III)-catalyzed sodium percarbonate: matrix constituent effects and degradation pathways. Chem Eng J 2017; 309:22-29. [PMID: 28959136 PMCID: PMC5612506 DOI: 10.1016/j.cej.2016.10.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Complete degradation of benzene by the Fe(III)-activated sodium percarbonate (SPC) system is demonstrated. Removal of benzene at 1.0 mM was seen within 160 min, depending on the molar ratios of SPC to Fe(III). A mechanism of benzene degradation was elaborated by free-radical probe-compound tests, free-radical scavengers tests, electron paramagnetic resonance (EPR) analysis, and determination of Fe(II) and H2O2 concentrations. The degradation products were also identified using gas chromatography-mass spectrometry method. The hydroxyl radical (HO.) was the leading species in charge of benzene degradation. The formation of HO. was strongly dependent on the generation of the organic compound radical (R.) and superoxide anion radical (O.). Benzene degradation products included hydroxylated derivatives of benzene (phenol, hydroquinone, benzoquinone, and catechol) and aliphatic acids (oxalic and fumaric acids). The proposed degradation pathways are consistent with radical formation and identified products. The investigation of selected matrix constituents showed that the Cl and HCO3 had inhibitory effects on benzene degradation. Natural organic matter (NOM) had accelerating influence in degrading benzene. The developed system was tested with groundwater samples and it was found that the Fe(III)-activated SPC has a great potential in effective remediation of benzene-contaminated groundwater while more further studies should be done for its practical application in the future because of the complex subsurface environment.
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Affiliation(s)
- Xiaori Fu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaogang Gu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Shuguang Lu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
- Corresponding author: Tel: +86 21 64250709, Fax: +86 21 64252737, (S. Lu)
| | - Virender K. Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 1266 TAMU, College Station, Texas 77843, USA
| | - Mark L. Brusseau
- Soil, Water and Environmental Science Department, School of Earth and Environmental Sciences, The University of Arizona, 429 Shantz Bldg., Tucson, AZ 85721, United States
| | - Yunfei Xue
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Muhammad Danish
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - George Y. Fu
- Department of Construction Management & Civil Engineering Technology, Georgia Southern University, Statesboro, GA 30460-8047, United States
| | - Zhaofu Qiu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
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Mao Y, Yang S, Yue Q, Wang W. Theoretical and experimental study of the mechanisms of phosphate removal in the system containing Fe(III)-ions. Environ Sci Pollut Res Int 2016; 23:24265-24276. [PMID: 27650849 DOI: 10.1007/s11356-016-7672-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 09/09/2016] [Indexed: 06/06/2023]
Abstract
A process-oriented investigation of phosphate removal by ferric salt was carried out in this study. The kinetics of amorphous ferric phosphate (FePO4(s)) formation has been investigated over the pH range of 6.0-8.0 using sulfosalicylic acid as a competitive ligand. The FePO4(s) formation rate constants varied in a narrow range over the pH range examined in this study. And the maximum of (0.90 ± 0.11) × 104 L mol-1 s-1 was obtained at pH 7.5 and the minimum value of (0.05 ± 0.01) × 104 L mol-1 s-1 was obtained at pH 6.0. These values are two orders of magnitude lower than the rate constants for Fe(III) hydrolysis-precipitation, and hence, the extent of FePO4(s) formation when ferric ions are added to aqueous solution is extremely low. Subsequently, the characteristics of the amorphous ferric oxide (AFO) with different ages were investigated, and it was found that the BET surface area, the average pore width, and the charge capacitance were various for different AFO with various ages. Phosphate adsorption by AFO was significantly affected by AFO aging and the manner of adding Fe(III), which was successfully described by a diffuse layer model. By using surface sites concentration obtained, the kinetics constant of AFO aging could be calculated by a functional equation at a certain pH and time. Graphic abstract Description of the precipitation and aging processes for the phosphate removal by Fe(III)-ions.
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Affiliation(s)
- Yanpengy Mao
- National Engineering Laboratory of Coal-fired Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan, 250100, People's Republic of China.
| | - Shanxiu Yang
- National Engineering Laboratory of Coal-fired Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan, 250100, People's Republic of China
| | - Qinyan Yue
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, People's Republic of China
| | - Wenlong Wang
- National Engineering Laboratory of Coal-fired Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan, 250100, People's Republic of China
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Yang MY, Zhao XL, Zheng MH, Wang Y, Jin JY. Fluorescent Sensing of both Fe(III) and pH Based on 4-Phenyl-2-(2-Pyridyl)Thiazole and Construction of OR Logic Function. J Fluoresc 2016; 26:1653-7. [PMID: 27465707 DOI: 10.1007/s10895-016-1855-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 06/14/2016] [Indexed: 11/29/2022]
Abstract
In the presented paper we investigated a 2-pyridylthiazole derivative, 4-phenyl-2-(2-pyridyl)thiazole (2-PTP), as the molecular fluorescent switches. It was firstly found that 2-PTP could perform a "turn-on" fluorescent sensing for Fe(III) with selectivity and reversibility. A 2:1 stoichiometry between 2-PTP and Fe(III) was determined according to the molar ratio method. The binding constant was evaluated as (1.90 ± 0.05) × 10(5) (L/mol)(2). The detection limit was found as 2.2 × 10(-7) M (S/N = 3). Secondly, 2-PTP also exhibited a pH-dependent dual-emission. The pK a(2-PTP-H(+)/2-PTP) value was then estimated as 2.0. To explain the identical emission at 479 nm of both the Fe(III) coordinated form and the protonated form of the ligand, we proposed a "locked" conformation. Finally, combining the two external stimuli as inputs, an OR logic gate was constructed using the fluorescent emission at 479 nm as the output channel.
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Affiliation(s)
- Ming-Yang Yang
- Department of Chemistry, Yanbian University, Yanji city, Jilin, Province, 133002, China
| | - Xiao-Long Zhao
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Yanbian University, Yanji city, Jilin, Province, 133002, China
| | - Ming-Hua Zheng
- Department of Chemistry, Yanbian University, Yanji city, Jilin, Province, 133002, China. .,Research Centre of Chemical Biology, Yanbian University, Yanji city, Jilin, Province, 133002, China.
| | - Yue Wang
- Research Centre of Chemical Biology, Yanbian University, Yanji city, Jilin, Province, 133002, China
| | - Jing-Yi Jin
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Yanbian University, Yanji city, Jilin, Province, 133002, China. .,Research Centre of Chemical Biology, Yanbian University, Yanji city, Jilin, Province, 133002, China.
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Dasgupta-Schubert N, Tiwari DK, Villaseñor Cendejas LM. Comment on 'Carbon and fullerene nanomaterials in plant system'. J Nanobiotechnology 2016; 14:28. [PMID: 27066901 PMCID: PMC4828792 DOI: 10.1186/s12951-016-0180-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 03/30/2016] [Indexed: 11/26/2022] Open
Abstract
A recent review article entitled “Carbon and fullerene nanomaterials in plant system” published in this journal, misinterprets a component of our (published) work on the interactions of carbon nanotubes with plants. In this comment, we provide the rationale to counter this misconstruction.
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Affiliation(s)
- N Dasgupta-Schubert
- Instituto de Investigaciones Químico Biológicas (IIQB), University of Michoacan (UMSNH), Cd. Universitaria, 58060, Morelia, Michoacán, Mexico.
| | - D K Tiwari
- Colegio de Michoacán, Jardines del Cerro Grande, La Piedad, 59370, Zamora, Michoacán, Mexico
| | - L M Villaseñor Cendejas
- Instituto de Física y Matemáticas (IFM), University of Michoacan (UMSNH), Cd. Universitaria, 58060, Morelia, Michoacán, Mexico
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48
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Roushani M, Beygi TM, Saedi Z. Synthesis and application of ion-imprinted polymer for extraction and pre-concentration of iron ions in environmental water and food samples. Spectrochim Acta A Mol Biomol Spectrosc 2016; 153:637-644. [PMID: 26454090 DOI: 10.1016/j.saa.2015.09.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 08/09/2015] [Accepted: 09/27/2015] [Indexed: 06/05/2023]
Abstract
In this work, a novel Fe(III) ion imprinted polymer as a sorbent for extraction of iron ions from different samples was synthesized. Precipitation of thermal copolymerization was used for preparation of polymeric sorbent. In this technique, methacrylic acid, ethylene glycoldimethacrylate, 2,2'-azobisisobutyronitrile and (DHBPT)2 {(DHBPT)2=3,6-bis (3,5-dimethyl-1-H-pyrzol-1-yl)-1,2-dihydro-1,2,4,5-tetrazine)} were used as monomer, cross-linker, initiator and ligand, respectively, in the presence of Fe(III) ions and ethanol as a porogenic solvent. Moreover, control polymer (NIP) particles were similarly prepared without the Fe(III) ions. XRD, FT-IR, SEM and nitrogen adsorption-desorption techniques have been used to characterization of these prepared polymeric samples. Iron ion imprinted polymer particles, abbreviated as Fe(III)-IIP, were leached with 50 mL of HCl (50% (v/v)). Absorption capacity for ion imprinted polymer was calculated about 40.41 mg·g(-1). Per-concentration of iron ion was investigated as a function of pH, weight of IIP, adsorption and desorption times, and volumes of sample. FAAS technique was used to determination of Fe(III) ion in the foods and waters samples.
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Affiliation(s)
| | | | - Zahra Saedi
- Department of Chemistry, Ilam University, Ilam, Iran
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Jorge AF, Röder R, Kos P, Dias RS, Wagner E, Pais AA. Combining polyethylenimine and Fe(III) for mediating pDNA transfection. Biochim Biophys Acta Gen Subj 2015; 1850:1325-35. [PMID: 25701646 DOI: 10.1016/j.bbagen.2015.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 01/21/2015] [Accepted: 02/11/2015] [Indexed: 11/23/2022]
Abstract
BACKGROUND The potential use of Fe(III) ions in biomedical applications may predict the interest of its combination with pDNA-PEI polyplexes. The present work aims at assessing the impact of this metal on pDNA complex properties. METHODS Variations in the formation of complexes were imposed by using two types of biological buffers at different salt conditions. The incorporation of pDNA in complexes was characterised by gel electrophoresis and dynamic light scattering. Transfection efficiency and cytotoxicity were evaluated in HeLa and HUH-7 cell lines, supported by flow cytometry assays. RESULTS Fe(III) enhances pDNA incorporation in the complex, irrespective of the buffer used. Transfection studies reveal that the addition of Fe(III) to complexes at low ionic strength reduces gene transfection, while those prepared under high salt content do not affect or, in a specific case, increase gene transfection up to 5 times. This increase may be a consequence of a favoured interaction of polyplexes with cell membrane and uptake. At low salt conditions, results attained with chloroquine indicate that the metal may inhibit polyplex endosomal escape. A reduction on the amount of PEI (N/P 5) formed at intermediary ionic strength, complemented by Fe(III), reduces the size of complexes while maintaining a transfection efficiency similar to that obtained to N/P 6. CONCLUSIONS Fe(III) emerges as a good supporting condensing agent to modulate pDNA-PEI properties, including condensation, size and cytotoxicity, without a large penalty on gene transfection. GENERAL SIGNIFICANCE This study highlights important aspects that govern pDNA transfection and elucidates the benefits of incorporating the versatile Fe(III) in a gene delivery system.
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Wang H, Yao H, Sun P, Pei J, Li D, Huang CH. Oxidation of tetracycline antibiotics induced by Fe(III) ions without light irradiation. Chemosphere 2015; 119:1255-1261. [PMID: 25460769 DOI: 10.1016/j.chemosphere.2014.09.098] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 09/08/2014] [Accepted: 09/21/2014] [Indexed: 06/04/2023]
Abstract
The presence of Fe(III) ions was found to induce degradation of three tetracycline antibiotics (TCs), tetracycline (TTC), oxytetracycline (OTC) and chlorotetracycline (CTC), in aqueous solutions without light. The presence of Fe(III) promoted the degradation of TCs in most experimental pH (5.0, 7.0 and 9.0) except at pH 9.0 for CTC. Degradation rate constants of TTC, OTC and CTC reached maximum ((6.2±0.5)×10(-3) h(-1), (10.6±0.1)×10(-3) h(-1) and (15.9±0.5)×10(-3) h(-1) at pH 7.0, 20 °C) when Fe(III):TC molar ratio was 1:1, 1:1 and 2:1, respectively. Such metal-to-ligand ratios agreed well with the most favorable complexation between Fe(III) and each TC. Compared to without metals, Fe(III) enhanced the degradation rate of TTC, OTC and CTC by up to 20.67, 7.07 and 2.30 times, respectively, in clean water matrix, and also promoted degradation of TCs in real surface water and wastewater matrices. The promoted degradation likely occurred via complexation of TCs and subsequent oxidation by Fe(III). Degradation results of CTC versus 4-epi-CTC suggested Fe(III) likely binds to TCs' C4 dimethylamino group. Toxicity of the complexes evaluated using Photobacterium phosphoreum T3 was increased after several hours of reaction, suggesting the transformation products may exert a stronger toxicity than parent TCs. This study identifies new oxidative transformation of TCs induced by Fe(III) ions without light irradiation, further supporting the important role of iron species in the environmental fate of TCs.
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Affiliation(s)
- Hui Wang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Hong Yao
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China.
| | - Peizhe Sun
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Jin Pei
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Desheng Li
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States.
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