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Hu J, Chen K, Xiang M, Wei J, Zeng Y, Qin Y, Zhang L, Zhang W. A novel sponge composite of chitosan-sodium tripolyphosphate-melamine for anionic dye Orange II removal. Int J Biol Macromol 2024; 270:132056. [PMID: 38704070 DOI: 10.1016/j.ijbiomac.2024.132056] [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: 01/19/2024] [Revised: 04/29/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Abstract
Since the potential carcinogenic, toxic and non-degradable dyes trigger serious environmental contamination by improper treatment, developing novel adsorbents remains a major challenge. A novel high efficiency and biopolymer-based environmental-friendly adsorbent, chitosan‑sodium tripolyphosphate-melamine sponge (CTS-STPP-MS) composite, was prepared for Orange II removing with chitosan as raw material, sodium tripolyphosphate as cross-linking agent. The composite was carefully characterized by SEM, EDS, FT-IR and XPS. The influence of crosslinking conditions, dosage, pH, initial concentration, contacting time and temperature on adsorption were tested through batch adsorption experiments. CTS-STPP-MS adsorption process was exothermic, spontaneous and agreed with Sips isotherm model accompanying the maximum adsorption capacity as 948 mg∙g-1 (pH = 3). Notably, the adsorption performance was outstanding for high concentration solutions, with a removal rate of 97 % in up to 2000 mg∙L-1 OII solution (100 mg sorbent dosage, 50 mL OII solution, pH = 3, 289.15 K). In addition, the adsorption efficiency yet remained 97.85 % after 5 repeated adsorption-desorption cycles. The driving force of adsorption was attributed to electrostatic attraction and hydrogen bonds which was proved by adsorption results coupled with XPS. Owing to the excellent properties of high-effective, environmental-friendly, easy to separate and regenerable, CTS-STPP-MS composite turned out to be a promising adsorbent in contamination treatment.
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Affiliation(s)
- Jiani Hu
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Kexin Chen
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Minghan Xiang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jianxiang Wei
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yang Zeng
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yan Qin
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Lingfan Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China; Research Center of Analysis and Test, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Wenqing Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
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Li X, Yu Y, Zhang R, Guo W. Cobalt etched graphite felt electrode for enhanced removal of organic pollutant in aqueous solution with a solid polymer electrolyte. Environ Sci Pollut Res Int 2024; 31:18614-18624. [PMID: 38349493 DOI: 10.1007/s11356-024-32440-9] [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: 09/05/2023] [Accepted: 02/07/2024] [Indexed: 03/09/2024]
Abstract
In this study, cobalt etched graphite felt electrodes were produced using a simple etching technique. It was used in combination with a solid polymer electrolyte (SPE) for the degradation of the target contaminant Orange II by Electro-Fenton (EF) technique in low conductivity water. In this method, 94% of Orange II in low conductivity water was removed in 90 min. The characterization analysis substantiates the hypothesis that the electrodes produced exhibit a three-dimensional porous structure, augmented defect concentration, and enhanced electron transfer capability. In addition, the potential reaction mechanism was inferred from the radical quenching experiments, and hydroxyl radicals (·OH) were deemed the main reactive substances. The combination of cobalt etched graphite felt electrodes with SPE demonstrates remarkable efficacy in the treatment of organic wastewater characterized by low electrical conductivity.
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Affiliation(s)
- Xinyu Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Yanjun Yu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Ruijuan Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Weilin Guo
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
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Wu Z, Wang G, Li Z, Li Z, Huang D, Huang M, Lin M. Dental Bleaching with Phthalocyanine Photosensitizers: Effects on Dentin Color and Collagen Content. Molecules 2023; 28:molecules28104223. [PMID: 37241963 DOI: 10.3390/molecules28104223] [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: 03/06/2023] [Revised: 04/21/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
With the increasing demand for tooth bleaching in esthetic dentistry, its safety has been the focus of a comprehensive body of literature. In this context, the aim of the present study was to evaluate the application effects of pentalysine β-carbonylphthalocyanine zinc (ZnPc(Lys)5)-mediated photodynamic therapy in dentin bleaching and its effects on dentin collagen. We first established a new and reproducible tooth staining model using dentin blocks stained by Orange II and then bleached with ZnPc(Lys)5 (25 μM) and hydrogen peroxide (10% or 30%). Data were analyzed with one- and two-way ANOVA and a significance level of p < 0.05. ZnPc(Lys)5 effectively bleached the dentin samples to an extent comparable to hydrogen peroxide at either 10% or 30% concentrations. Further studies on the dentin morphology, chemical element distribution, and protein constituents, using an electron microscope, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and SDS-PAGE, demonstrated that treatment with the photosensitizer preserved the dentin structure and, at the same time, the major organic component, collagen type I. For comparison, hydrogen peroxide (10% or 30%) treatment significantly degraded the collagen protein. This work indicated that the photosensitizer exerts potent bleaching effects on dentin staining; importantly, does not damage dentin and its collagen content; and opens up a new strategy to further explore various photosensitizers for the bleaching of both tooth enamel and dentin.
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Affiliation(s)
- Zhouyan Wu
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou 350002, China
- The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine, 282 Wusi Road, Fuzhou 350003, China
| | - Guodong Wang
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350108, China
| | - Zhiming Li
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou 350002, China
| | - Zhengquan Li
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou 350002, China
| | - Dandan Huang
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou 350002, China
| | - Mingdong Huang
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350108, China
| | - Minkui Lin
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou 350002, China
- Institute of Stomatology & Laboratory of Oral Tissue Engineering, School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China
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Yang B, Luo Q, Li Q, Jia R, Liu Y, Huang X, Zhou M, Li L. Dye mineralization under UV/H 2O 2 promoted by chloride ion at high concentration and the generation of chlorinated byproducts. Sci Total Environ 2023; 857:159453. [PMID: 36252669 DOI: 10.1016/j.scitotenv.2022.159453] [Citation(s) in RCA: 2] [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: 06/23/2022] [Revised: 09/21/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Chloride ion (Cl-) may promote or inhibit the oxidation of specific organic compounds treated by hydroxyl radical based advanced oxidation processes (HR-AOPs) depending on the reactivity of chlorine radicals towards the organics. However, the effects of high contents of Cl- on the removal of total organic compounds (TOC) in high salinity organic wastewater treated by HR-AOPs were unclear. The removal and mineralization of azo dye Orange II (OrgII) by UV/H2O2 process with Cl- at high contents under various pH conditions were investigated. As the pH conditions increased higher than pH 5, TOC removal rates increased slightly possibly related to the increase of O2- production and the reduce of futile decomposition of H2O2 into O2. Cl- at relative high concentration (1000 and 2000 mM) significantly promoted the mineralization of dyes with TOC removal increasing by 10 %-40 % under both acid and alkaline conditions. The proposed mechanism is that the reaction of Cl- with OH would decline the decomposition of H2O2 into O2 by inhibiting the reaction between OH and H2O2, and the generated chlorine species (Cl and Cl2-) could further promote the oxidation of dye molecules into intermediates and be helpful for the subsequent mineralization process. In addition, H2O2 and Cl- can slowly react to give HClO and ClO-, which may partly contribute to the decolorization and mineralization of OrgII. Meanwhile, an appropriate relative proportion between Cl2- and OH depending on Cl- contents and pH conditions is important to enhance the TOC removal. However, the formation of various chlorinated byproducts especially under alkaline condition may increase the risk of environmental pollution accidents. The results demonstrate the promotion of TOC removal by UV/H2O2 under certain high contents of Cl- and provide new insight into the application of HR-AOPs to the pretreatment of high salinity organic wastewater.
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Affiliation(s)
- Bing Yang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China; Institute of Industrial Hazardous Waste Disposal and Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, China; Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, Sichuan 610500, China.
| | - Qiuping Luo
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Qinman Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Rong Jia
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest China, Ministry of Education, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Yucheng Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China; Institute of Industrial Hazardous Waste Disposal and Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Xiangfu Huang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Mi Zhou
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Lingli Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China.
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Zhou X, Li X, Xu C, Yang L, Yang G, Guo L. A persulfate oxidation system for removing acid orange from aqueous solution: Evaluation and degradation mechanism. J Environ Manage 2022; 322:116054. [PMID: 36058071 DOI: 10.1016/j.jenvman.2022.116054] [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] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 08/17/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Peroxymonosulfate-based advanced oxidation (PMS-AOP) is a promising technology for the degradation of environmental pollutants. PMS can be activated by various transition metals, especially cobalt-based catalysts, but pure cobalt catalyst suffers from severe metal leakage and poor cyclicality. This study synthesized NiCo2O4 using a co-precipitation hydrothermal method. The structures, morphologies, and chemical states of the prepared catalysts were hexagonal sheet structures. The activation of PMS by catalyst (NiCo2O4) is investigated in a PMS/carbonate (PC) system for Orange II degradation. The observed pseudo-first-order rate constants (k1) were assessed by the effects of different water matrices and operation conditions. The results show that kobs with NiCo2O4 were increased by 13 times than that of treatment without NiCo2O4. This was mainly due to Co3+ and Ni3+ act as electron acceptors to capture electrons from the PMS/PC system, forming a good redox cycle with HSO5-/SO5- and oxidizing Co2+/Ni2+ to produce a large amount of more active components (e.g., 1O2 and SO4⋅-). The good reusability and high stability of NiCo2O4 were demonstrated by five recycle tests. These results suggest that the NiCo2O4/PC system is an efficient and stable method of pollution remediation.
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Affiliation(s)
- Xuan Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Xinyuan Li
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Caixia Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Liu Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Guangzhong Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Li Guo
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
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Zhang R, Jin J, Jia L, Shi B, Chen R. Fabrication of CdS/Ti 3C 2/g-C 3N 4NS Z-scheme composites with enhanced visible light-driven photocatalytic activity. Environ Sci Pollut Res Int 2022; 29:16371-16382. [PMID: 34648154 DOI: 10.1007/s11356-021-16942-4] [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] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
The Ti3C2 and g-C3N4NS were obtained first, and the CdS/Ti3C2/g-C3N4NS Z-scheme composites were prepared via a facile hydrothermal synthesis, and their photocatalytic properties were investigated. The g-C3N4NS with a high surface area displayed higher adsorption and degradation capacity. Compared with Ti3C2/g-C3N4NS and CdS, the visible light photocatalytic activity of CdS/Ti3C2/g-C3N4NS composites was improved. The as-synthesized CTN-4:1 composite exhibited outstanding photocatalytic performance for degradation of orange II, approximately 3.2 and 10.7 times higher than that of Ti3C2/g-C3N4NS and CdS, respectively. The fabrication of CdS/Ti3C2/g-C3N4NS Z-scheme heterostructure using Ti3C2 as electron transfer medium improved the separation ability of the photoinduced e--h+ pairs, thereby leading to the improvement of visible light-driven photocatalytic activity. This finding provides new insights into the construction of high efficiency Z-scheme heterostructure photocatalyst.
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Affiliation(s)
- Ranran Zhang
- Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Jiaying Jin
- Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Lumeng Jia
- Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Bo Shi
- Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
| | - Rufen Chen
- Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
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González-Rodríguez J, Fernández L, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. Reusable Fe 3O 4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II. Nanomaterials (Basel) 2021; 11:533. [PMID: 33669767 DOI: 10.3390/nano11020533] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 11/17/2022]
Abstract
Today, the presence of recalcitrant pollutants in wastewater, such as pharmaceuticals or other organic compounds, is one of the main obstacles to the widespread implementation of water reuse. In this context, the development of innovative processes for their removal becomes necessary to guarantee effluent quality. This work presents the potentiality of magnetic nanoparticles immobilized on SBA-15 mesoporous silica as Fenton and photo-Fenton catalysts under visible light irradiation. The influence of the characteristics of the compounds and nanoparticles on the removal yield was investigated. Once the key aspects of the reaction mechanism were analyzed, to evaluate the feasibility of this process, an azo dye (Orange II) and an antibiotic (sulfamethoxazole) were selected as main target compounds. The concentration of Orange II decreased below the detection limit after two hours of reaction, with mineralization values of 60%. In addition, repeated sequential experiments revealed the recoverability and stability of the nanoparticles in a small-scale reactor. The benchmarking of the obtained results showed a significant improvement of the process using visible light in terms of kinetic performance, comparing the results to the Fenton process conducted at dark. Reusability, yield and easy separation of the catalyst are its main advantages for the industrial application of this process.
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Chen SQ, Li M, Ma XY, Zhou MJ, Wang D, Yan MY, Li Z, Yao KF. Influence of inorganic ions on degradation capability of Fe-based metallic glass towards dyeing wastewater remediation. Chemosphere 2021; 264:128392. [PMID: 33002804 DOI: 10.1016/j.chemosphere.2020.128392] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 04/27/2020] [Revised: 08/31/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
Metallic glasses (MGs) are promising candidates for catalysts with high efficiency for dyeing wastewater remediation, due to their metastable nature, disordered structure, and large residual stresses. However, dyeing wastewater usually contains a high concentration of inorganic ions which may have adverse effects on the degradation process, while the impacts of these ions on MGs' degradation capability have often been overlooked and still remain unknown. Thus, the roles of inorganic ions (Cl-, NO3-, SO42-, and H2PO4-) on the degradation of azo dye by Fe-based MG with nominal composition of Fe81Si4B14Cu1 were systematically investigated. The results showed that the inorganic ions have significant influence on MG's surface morphology, degradation capability, mineralization and durability. All these aspects need to be considered prior to application of MGs for azo dyes degradation in real natural contaminated water or saline wastewater.
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Affiliation(s)
- Shuang-Qin Chen
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China; Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, China.
| | - Mai Li
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China; Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, China
| | - Xu-Yang Ma
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Ming-Jie Zhou
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Dong Wang
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Meng-Yang Yan
- School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, China; Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, China
| | - Zhun Li
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Ke-Fu Yao
- School of Material Science and Engineering, Tsinghua University, Beijing, 100084, China.
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Wu L, Pu H, Huang L, Sun DW. Plasmonic nanoparticles on metal-organic framework: A versatile SERS platform for adsorptive detection of new coccine and orange II dyes in food. Food Chem 2020; 328:127105. [PMID: 32464556 DOI: 10.1016/j.foodchem.2020.127105] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [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: 01/23/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 11/29/2022]
Abstract
Synthetic dyes have been widely applied to food processing, but abuse of colourants in food may pose risks to human health. To analyze new coccine (NC) and orange II (OII) in food, a versatile surface-enhanced Raman scattering (SERS) platform was proposed. A metal-organic framework (MOF, UiO-66(NH2)) with octahedral crystal structure was synthesized and gold nanoparticles were grown on the MOF surface to fabricate UiO-66(NH2)@Au versatile SERS platform. The UiO-66(NH2)@Au displayed much better SERS performance than gold nanoparticles with high R2 of 0.9684 for NC and 0.9912 for OII and low LOD of 0.4015 mg/L for NC and 0.0546 mg/L for OII. The recoveries of NC and OII in Mirinda soft drink and paprika ranged from 82.92 to 109.63%. This study provided a sensitive and rapid method for determination of NC and OII through UiO-66(NH2)@Au, and the proposed SERS platform revealed great potential for analyzing synthetic colourants in food samples.
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Affiliation(s)
- Leilei Wu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Hongbin Pu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Lunjie Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland. http://www.ucd.ie/refrig
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Riegas-Villalobos A, Martínez-Morales F, Tinoco-Valencia R, Serrano-Carreón L, Bertrand B, Trejo-Hernández MR. Efficient removal of azo-dye Orange II by fungal biomass absorption and laccase enzymatic treatment. 3 Biotech 2020; 10:146. [PMID: 32181108 DOI: 10.1007/s13205-020-2150-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 08/16/2019] [Accepted: 02/17/2020] [Indexed: 11/26/2022] Open
Abstract
In this study, the exact contribution of T. versicolor fungal biomass and laccase in the removal of the Orange II dye from liquid culture was determined. Biomass and laccase were produced with three different carbon sources [bran flakes (BF), wheat bran (WB) and wheat flour (WF)]. The contribution of the biomass and the laccase enzyme in the removal of the Orange II dye was assessed as follows: (A) in vivo treatment with fungal biomass; in vivo treatment with fungal biomass and inhibited laccase (using 0.6 mM sodium azide); and (B) in vitro treatment with crude laccase. The results of fungal biomass production were similar for all the carbon sources evaluated, while laccase volumetric activities were different. The highest enzyme production was obtained with WB, followed by BF and WF. In the in vivo treatment with fungal biomass-laccase, dye removal was over 84% for all the carbon sources. Dye adsorption by fungal biomass varied from 1.5-2%, presenting enzymatic activities ranging from 62 to 163 U L-1. In the in vivo treatment with fungal biomass-inhibited laccase, the removal of the dye varied from 30 to 72%. In this case, the percentage of dye adsorption by fungal biomass was significantly increased and ranged from 18 to 53%. In the in vitro treatment with laccase, the removal ranged from 80 to 84%. The best treatment for dye removal involved the use of both fungal biomass and laccase. The carbon source for biomass and laccase production had an impact on dye removal.
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Affiliation(s)
- Aurora Riegas-Villalobos
- 1Laboratorio de Biotecnología Ambiental, Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209 Cuernavaca, Morelos Mexico
| | - Fernando Martínez-Morales
- 1Laboratorio de Biotecnología Ambiental, Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209 Cuernavaca, Morelos Mexico
| | - Raunel Tinoco-Valencia
- 2Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos Mexico
| | - Leobardo Serrano-Carreón
- 2Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos Mexico
| | - Brandt Bertrand
- 3Instituto de Ciencias Físicas, Universidad Autónoma Nacional de México, Cuernavaca, Morelos Mexico
| | - María R Trejo-Hernández
- 1Laboratorio de Biotecnología Ambiental, Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209 Cuernavaca, Morelos Mexico
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Paz EC, Pinheiro VS, Joca JFS, de Souza RAS, Gentil TC, Lanza MRV, de Oliveira HPM, Neto AMP, Gaubeur I, Santos MC. Removal of Orange II (OII) dye by simulated solar photoelectro-Fenton and stability of WO 2.72/Vulcan XC72 gas diffusion electrode. Chemosphere 2020; 239:124670. [PMID: 31505441 DOI: 10.1016/j.chemosphere.2019.124670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 07/05/2019] [Revised: 08/23/2019] [Accepted: 08/24/2019] [Indexed: 06/10/2023]
Abstract
The objectives of this study were to determine the viability of removing Orange II (OII) dye by simulated solar photoelectro-Fenton (SSPEF) and to evaluate the stability of a WO2.72/Vulcan XC72 gas diffusion electrode (GDE) and thus determine its best operating parameters. The GDE cathode was combined with a BDD anode for decolorization and mineralization of 350 mL of 0.26 mM OII by anodic oxidation with electrogenerated H2O2 (AO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF) at 100, 150 and 200 mA cm-2 and SSPEF at 150 mA cm-2. The GDE showed successful operation for electrogeneration, good reproducibility and low leaching of W. Decolorization and OII decay were directly proportional to the current density (j). AO-H2O2 had a reduced performance that was only half of the SSPEF, PEF and EF treatments. The mineralization efficiency was in the following order: AO-H2O2 < EF < PEF ≈ SSPEF. This showed that the GDE, BDD anode and light radiation combination was advantageous and indicated that the SSPEF process is promising with both a lower cost than using UV lamps and simulating solar photoelectro-Fenton process. The PEF process with the lowest j (100 mA cm-2) showed the best performance-mineralization current efficiency.
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Affiliation(s)
- Edson C Paz
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil; Instituto Federal de Educação, Ciência e Tecnologia Do Maranhão (IFMA), Campus Açailândia, R. Projetada, s/n, CEP 65.930-000, Açailândia, MA, Brazil
| | - Victor S Pinheiro
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Jhonny Frank Sousa Joca
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Rafael Augusto Sotana de Souza
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Tuani C Gentil
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Marcos R V Lanza
- Instituto de Química de São Carlos (IQSC), Universidade de São Paulo (USP), Caixa Postal, 780, CEP 13.566-590, São Carlos, SP, Brazil; Instituto Nacional de Tecnologias Alternativas Para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos (INCT-DATREM), Instituto de Química, UNESP, CEP 14800-900, Araraquara, SP, Brazil
| | - Hueder Paulo Moisés de Oliveira
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Ana Maria Pereira Neto
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Ivanise Gaubeur
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil
| | - Mauro C Santos
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal Do ABC (UFABC), Rua Santa Adélia, 166, CEP 09.210-170, Santo André, SP, Brazil.
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12
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Xu Y, Guo X, Zha F, Tang X, Tian H. Efficient photocatalytic removal of orange II by a Mn 3O 4-FeS 2/Fe 2O 3 heterogeneous catalyst. J Environ Manage 2020; 253:109695. [PMID: 31634744 DOI: 10.1016/j.jenvman.2019.109695] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 09/12/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Elemental doping has been proven to be an effective strategy for increasing the catalytic activity and structural stability of Fenton catalysts. Therefore, this work reports that Mn-doped FeS2/Fe2O3 (Mn3O4-FeS2/Fe2O3) has excellent catalytic performance for the degradation of Orange II under simulated solar energy. Degradation experiment results showed that the sample with a manganese-iron molar ratio of 1:2 exhibited higher activity than others. The degradation rate of 20 mg/L OII reached 99.0% in 18 min under the conditions of 0.3 g/L Mn3O4-FeS2/Fe2O3, 5 mM H2O2 and pH = 2.8. In addition to, the Mn3O4-FeS2/Fe2O3 catalyst shows good reusability for Orange II and high activity for other dyes (MB, MG, Rh B and MO) under optimal conditions. Degradation mechanism study indicated that the heterogeneous Fenton reaction was promoted by retarding the recombination of photogenerated charge carriers and accelerating the cycle between Fe3+/Mn2+ and Fe2+/Mn3+, which improved photo-Fenton-like catalytic performance, resulting in the enhanced degradation of organic pollutant. Finally, a possible degradation pathway was proposed according to the results of liquid chromatography-mass spectrometry (LC-MS). In short, the catalyst has potential application value in wastewater treatment.
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Affiliation(s)
- Yanan Xu
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Xiaojun Guo
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Fei Zha
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Xiaohua Tang
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Haifeng Tian
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
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13
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Dura A, Breslin CB. Electrocoagulation using aluminium anodes activated with Mg, In and Zn alloying elements. J Hazard Mater 2019; 366:39-45. [PMID: 30502571 DOI: 10.1016/j.jhazmat.2018.11.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 11/21/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
The simultaneous removal of phosphates, Zn2+ and Orange II, in two synthetic wastewaters was achieved using Al-Mg and Al-Zn-In alloys as anodes at 11.7 mA cm-2 and a surface area to volume ratio of 19.0 m-1. Higher removal efficiencies were obtained with Al-Zn-In, attaining values of 95-96% for phosphate, 99% for Zn2+ and 88-96% for Orange II, while somewhat lower values were seen with Al-Mg, with 89-93% for phosphate, 96% for Zn2+ and 50-60% for Orange II, depending on the solution. The higher efficiency with Al-Zn-In was attributed to its less passive behaviour, which was evident from polarisation plots. Numerous shallow pits, resembling general-like dissolution, were seen with Al-Zn-In, while fewer and larger pits were observed with Al-Mg. The energy demand for the removal of the pollutants was computed as 1.30 and 2.55 kWh m-3 for the Al-Zn-In and Al-Mg anodes, respectively. The removal of phosphates and Orange II was explained in terms of the generation of cationic polynuclear aluminium species that provide electrostatic interactions with the anionic phosphates and Orange II. The removal of Zn2+ was attributed to the formation of insoluble Zn(OH)2.
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Affiliation(s)
- Adelaide Dura
- Department of Chemistry, Maynooth University, Maynooth, County Kildare, Ireland
| | - Carmel B Breslin
- Department of Chemistry, Maynooth University, Maynooth, County Kildare, Ireland.
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Ramírez H, Núñez MMG, Bogoya AB, Gomez DFB, Ramos C, di Luca C, Inchaurrondo N, Haure P. Synthesis of coal fly ash zeolite for the catalytic wet peroxide oxidation of Orange II. Environ Sci Pollut Res Int 2019; 26:4277-4287. [PMID: 30291616 DOI: 10.1007/s11356-018-3315-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 02/12/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
Fly ash, a coal combustion residue produced by Termotasajero in Colombia, has been hydrothermally treated after an alkaline fusion to produce zeolite without addition of silicon or aluminum. The starting material was thoroughly mixed with NaOH, in a 1:1.2 mass ratio, to obtain a homogeneous mixture that was heated to 100 °C during different times (6, 8, and 10 h) and three zeolite samples were produced. The samples were characterized by XRD, SEM, XRF, Mössbauer spectroscopy, and N2 physisorption. According to characterization results (high surface area and appropriate morphological properties including crystallinity) and synthesis time, zeolitic catalyst synthesized with 8 h of hydrothermal treatment was selected to perform further analysis. This sample consisted of a mixture of zeolite X and zeolite A of high surface area (301 m2 g-1) and a Fe content of 6% wt/wt. The zeolite was used as a catalyst for the Fenton oxidation of Orange II. Experiments were performed in a laboratory batch reactor at 70 °C and constant pH = 3, using different concentrations of H2O2. When the stoichiometric amount of H2O2 was used, good mineralization (XTOC = 45%), complete discoloration, and oxidant consumption were obtained after 240 min of reaction. The sample retained activity after 16 h of usage. The presence of Fe in the reaction media was always detected and a homogeneous Fenton mechanism induced by surface-leached iron is suggested.
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Affiliation(s)
- Herney Ramírez
- Departamento de Ingeniería Química y Ambiental, Universidad Nacional de Colombia, Bogotá, 11001, Colombia.
| | | | - Anamaria Barrera Bogoya
- Departamento de Ingeniería Química y Ambiental, Universidad Nacional de Colombia, Bogotá, 11001, Colombia
| | | | - Cinthia Ramos
- Departamento de Física de la Materia Condensada, GiyA-CAC-CNEA, San Martín, 1650, Buenos Aires, Argentina
| | - Carla di Luca
- Departamento de Ingeniería Química - División Catalizadores y Superficies, INTEMA-CONICET/Universidad de Mar de Plata, 7600, Mar del Plata, Argentina
| | - Natalia Inchaurrondo
- Departamento de Ingeniería Química - División Catalizadores y Superficies, INTEMA-CONICET/Universidad de Mar de Plata, 7600, Mar del Plata, Argentina
| | - Patricia Haure
- Departamento de Ingeniería Química - División Catalizadores y Superficies, INTEMA-CONICET/Universidad de Mar de Plata, 7600, Mar del Plata, Argentina
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Morales Urrea DA, Haure PM, García Einschlag FS, Contreras EM. Horseradish peroxidase-mediated decolourization of Orange II: modelling hydrogen peroxide utilization efficiency at different pH values. Environ Sci Pollut Res Int 2018; 25:19989-20002. [PMID: 29744778 DOI: 10.1007/s11356-018-2134-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 01/17/2018] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Enzymatic decolourization of azo-dyes could be a cost-competitive alternative compared to physicochemical or microbiological methods. Stoichiometric and kinetic features of peroxidase-mediated decolourization of azo-dyes by hydrogen peroxide (P) are central for designing purposes. In this work, a modified version of the Dunford mechanism of peroxidases was developed. The proposed model takes into account the inhibition of peroxidases by high concentrations of P, the substrate-dependant catalatic activity of peroxidases (e.g. the decomposition of P to water and oxygen), the generation of oxidation products (OP) and the effect of pH on the decolourization kinetics of the azo-dye Orange II (OII). To obtain the parameters of the proposed model, two series of experiments were performed. In the first set, the effects of initial P concentration (0.01-0.12 mM) and pH (5-10) on the decolourization degree were studied at a constant initial OII concentration (0.045 mM). Obtained results showed that at pH 9-10 and low initial P concentrations, the consumption of P was mainly to oxidize OII. From the proposed model, an expression for the decolourization degree was obtained. In the second set of experiments, the effect of the initial concentrations of OII (0.023-0.090 mM), P (0.02-4.7 mM), HRP (34-136 mg/L) and pH (5-10) on the initial specific decolourization rate (q0) was studied. As a general rule, a noticeable increase in q0 was observed for pHs higher than 7. For a given pH, q0 increased as a function of the initial OII concentration. Besides, there was an inhibitory effect of high P concentrations on q0. To asses the possibility of reusing the enzyme, repeated additions of OII and P were performed. Results showed that the enzyme remained active after six reuse cycles. A satisfactory accordance between the change of the absorbance during these experiments and absorbances calculated using the proposed model was obtained. Considering that this set of data was not used during the fitting procedure of the model, the agreement between predicted and experimental absorbances provides a powerful validation of the model developed in the present work.
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Affiliation(s)
- Diego Alberto Morales Urrea
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), CCT - Mar del Plata CONICET, Av. Juan B. Justo 4302 (7600), Mar del Plata, Argentina
| | - Patricia Mónica Haure
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), CCT - Mar del Plata CONICET, Av. Juan B. Justo 4302 (7600), Mar del Plata, Argentina
- Facultad de Ingeniería, Universidad Nacional de Mar del Plata (UNMdP), Av. Juan B. Justo 4302 (7600), Mar del Plata, Argentina
| | - Fernando Sebastián García Einschlag
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT - La Plata - CONICET, Diag 113 y 64 (1900), La Plata, Argentina
- Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), Av. 1 #750 (1900), La Plata, Argentina
| | - Edgardo Martín Contreras
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), CCT - Mar del Plata CONICET, Av. Juan B. Justo 4302 (7600), Mar del Plata, Argentina.
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16
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Alraies A, Cole DK, Rees JS, Glasse C, Young N, Waddington RJ, Sloan AJ. Real-time binding kinetic analyses of the interaction of the dietary stain orange II with dentin matrix. J Dent 2019; 80:80-8. [PMID: 29894765 DOI: 10.1016/j.jdent.2018.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/08/2018] [Accepted: 06/08/2018] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Dietary stains can be adsorbed into the dentin of teeth. Using Orange II as a model dietary stain, this study investigated the strength of its interaction with the mineral and protein components of dentin matrix and how hydrogen peroxide (H2O2) treatment influences this interaction. METHODS Dentin slices were prepared from human teeth and were either deproteinized (5.6% sodium hypochlorite, 12 days), demineralised (0.5 M EDTA, 3 days) or left as intact control samples. Samples were stained with Orange II for 1-168 h, during which staining intensity was quantified by image analysis. Similarly, uptake of stain by deproteinized / demineralized samples treated with 10 or 30% H2O2 was investigated. Using surface plasmon resonance technology, real-time binding kinetics were determined assessing the interaction of Orange II with the dentin matrix protein constituents, collagen type I, biglycan, decorin, dentin sialoprotein and osteopontin. RESULTS Deproteinization of dentin matrix reduced the uptake of the Orange II compared to the intact control. Conversely, demineralization of dentin samples increased the uptake of the dye. Treatment of samples for 48 h with H2O2 reduced subsequent uptake of the Orange II. Real-time kinetic analysis indicated moderate strength of binding for Orange II with collagen type I, weak binding with decorin and biglycan and negligible binding with dentine sialoprotein and osteopontin. CONCLUSION These results indicate a predominant role for collagen type I, which accounts for 90% of the organic protein matrix of teeth, for attracting dietary stains. Binding analyses indicate that the interaction is highly dissociable, and further binding is reduced following H2O2 treatment. CLINICAL SIGNIFICANCE This study provides new information regarding adsorption of dietary stains into tooth dentin, suggesting that they are attracted and moderately bound to the collagen type I matrix. This study also contributes valuable information for discussion for considering the effect of H2O2 on bleaching teeth and its influence on subsequent uptake of dietary stains following whitening treatments.
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Dai H, Xu S, Chen J, Miao X, Zhu J. Oxalate enhanced degradation of Orange II in heterogeneous UV-Fenton system catalyzed by Fe 3O 4@γ-Fe 2O 3 composite. Chemosphere 2018; 199:147-153. [PMID: 29433028 DOI: 10.1016/j.chemosphere.2018.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 10/10/2017] [Revised: 01/31/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Oxalate enhanced mechanism of Fe3O4@γ-Fe2O3 was developed to provide novel insight into catalytic process regulation of iron oxide catalysts in heterogeneous UV-Fenton system. And the iron oxide composite of Fe3O4@γ-Fe2O3 was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), fourier transform infrared (FTIR) spectroscopy and nitrogen adsorption-desorption isotherms. The results showed that large amount of iron could be leached from catalyst in the presence of oxalate, which promoted the homogeneous UV-Fenton reactions in solution. Orange II degradation could be significantly enhanced with the increase of the ratio of homogeneous UV-Fenton process to heterogeneous UV-Fenton process. The optimum concentration of oxalate determined by experiment was 0.5 mM in oxalate enhanced heterogeneous UV-Fenton system. On this condition, the pseudo-first-order rate constant value of Orange II degradation was 0.314 min-1, which was 2.3 times as high as that in heterogeneous UV-Fenton system. The removal rates of color and TOC were 100% and 86.6% after 20 min and 120 min treatment, respectively. In addition, the iron ions in solution could be almost completely adsorbed back to the catalyst surface in later degradation stages of Orange II. During the recycle experiments, the results showed that the increase of pH in solution and the sorption of intermediates on the catalyst surface would hinder oxalate enhanced process and lead to a decrease of degradation rate of Orange II in oxalate enhanced heterogeneous UV-Fenton system.
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Affiliation(s)
- Huiwang Dai
- School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, China; The Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang 330031, Jiangxi, China.
| | - Shuying Xu
- School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, China; The Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang 330031, Jiangxi, China.
| | - Jianxin Chen
- School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, China; The Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang 330031, Jiangxi, China.
| | - Xiaozeng Miao
- School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, China; The Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang 330031, Jiangxi, China.
| | - Jianxi Zhu
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS) Guangzhou, 510640, China; Guangdong Provincial Key Laboratory of Mineral Physics and Materials, 510460, China.
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Iakovleva E, Sillanpää M, Maydannik P, Liu JT, Allen S, Albadarin AB, Mangwandi C. Manufacturing of novel low-cost adsorbent: Co-granulation of limestone and coffee waste. J Environ Manage 2017; 203:853-860. [PMID: 28521957 DOI: 10.1016/j.jenvman.2017.05.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 04/07/2016] [Revised: 05/02/2017] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
Limestone and coffee waste were used during the wet co-granulation process for the production of efficient adsorbents to be used in the removal of anionic and cationic dyes. The adsorbents were characterized using different analytical techniques such as XRD, SEM, FTIR, organic elemental analysis, the nitrogen adsorption method, with wettability, strength and adsorption tests. The adsorption capacity of granules was determined by removal of methylene blue (MB) and orange II (OR) from single and mixed solutions. In the mixed solution, co-granules removed 100% of MB and 85% of OR. The equilibria were established after 6 and 480 h for MB and OR, respectively.
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Affiliation(s)
- Evgenia Iakovleva
- Laboratory of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland; School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK.
| | - Mika Sillanpää
- Laboratory of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland; Department of Civil and Environmental Engineering, Florida International University, 10555, West Flagler Street, Miami, FL, 33174, USA
| | - Philipp Maydannik
- Laboratory of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Jiang Tao Liu
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK
| | - Stephen Allen
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK
| | - Ahmad B Albadarin
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK; School of Natural Sciences, Bernal Institute, University of Limerick, Limerick, Ireland
| | - Chirangano Mangwandi
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, BT9 5AG, Northern Ireland, UK
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Wei G, Shao L, Mo J, Li Z, Zhang L. Preparation of a new Fenton-like catalyst from red mud using molasses wastewater as partial acidifying agent. Environ Sci Pollut Res Int 2017; 24:15067-15077. [PMID: 28493190 DOI: 10.1007/s11356-017-9126-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 12/25/2016] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Using molasses wastewater as partial acidifying agent, a new Fenton-like catalyst (ACRM sm ) was prepared through a simple process of acidification and calcination using red mud as main material. With molasses wastewater, both the free alkali and the chemically bonded alkali in red mud were effectively removed under the action of H2SO4 and molasses wastewater, and the prepared ACRM sm was a near-neutral catalyst. The ACRM sm preparation conditions were as follows: for 3 g of red mud, 9 mL of 0.7 mol/L H2SO4 plus 2 g of molasses wastewater as the acidifying agent, calcination temperature 573 K, and calcination time 1 h. Iron phase of ACRM sm was mainly α-Fe2O3 and trace amount of carbon existed in ACRM sm . The addition of molasses wastewater not only effectively reduced the consumption of H2SO4 in acidification of red mud but also resulted in the generation of carbon and significantly improved the distribution of macropore in prepared ACRM sm . It was found that near-neutral pH of catalyst, generated carbon, and wide distribution of macropore were the main reasons for the high catalytic activity of ACRM sm . The generated carbon and wide distribution of macropore were entirely due to the molasses wastewater added. In degradation of orange II, ACRM sm retained most of its catalytic stability and activity after five recycling times, indicating ACRM sm had an excellent long-term stability in the Fenton-like process. Furthermore, the performance test of settling showed ACRM sm had an excellent settleability. ACRMsm was a safe and green catalytic material used in Fenton-like oxidation for wastewater treatment.
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Affiliation(s)
- Guangtao Wei
- Ministry-province Jointly-constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Nanning, 530004, China
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Luhua Shao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Jihua Mo
- Ministry-province Jointly-constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Zhongmin Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Linye Zhang
- Ministry-province Jointly-constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Nanning, 530004, China.
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
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20
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Zhou G, Guo J, Zhou G, Wan X, Shi H. Photodegradation of Orange II using waste paper sludge-derived heterogeneous catalyst in the presence of oxalate under ultraviolet light emitting diode irradiation. J Environ Sci (China) 2016; 47:63-70. [PMID: 27593273 DOI: 10.1016/j.jes.2015.11.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 09/10/2015] [Revised: 11/27/2015] [Accepted: 12/01/2015] [Indexed: 06/06/2023]
Abstract
A waste paper sludge-derived heterogeneous catalyst (WPS-Fe-350) was synthesized via a facile method and successfully applied for the degradation of Orange II in the presence of oxalic acid under the illumination of ultraviolet light emitting diode (UV-LED) Powder X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electronic microscopy and N2 sorption isotherm analysis indicated the formation of α-Fe2O3 in the mesoporous nanocomposite. The degradation test showed that WPS-Fe-350 exhibited rapid Orange II (OII) degradation and mineralization in the presence of oxalic acid under the illumination of UV-LED. The effects of pH, oxalic acid concentration and dosage of the catalyst on the degradation of OII were evaluated, respectively. Under the optimal conditions (1g/L catalyst dosage, 2mmol/L oxalic acid and pH3.0), the degradation percentage for a solution containing 30mg/L OII reached 83.4% under illumination by UV-LED for 80min. Moreover, five cyclic tests for OII degradation suggested that WPS-Fe-350 exhibited excellent stability of catalytic activity. Hence, this study provides an alternative environmentally friendly way to reuse waste paper sludge and an effective and economically viable method for degradation of azo dyes and other refractory organic pollutants in water.
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Affiliation(s)
- Guoqiang Zhou
- Department of Environmental Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Jinyi Guo
- Department of Environmental Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Guowang Zhou
- Department of Environmental Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Xiankai Wan
- Department of Environmental Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Huixiang Shi
- Department of Environmental Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China.
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21
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Deng J, Wen X, Li J. Fabrication highly dispersed Fe3O4 nanoparticles on carbon nanotubes and its application as a mimetic enzyme to degrade Orange II. Environ Technol 2016; 37:2214-2221. [PMID: 26828855 DOI: 10.1080/09593330.2016.1146339] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 04/07/2015] [Accepted: 01/20/2016] [Indexed: 06/05/2023]
Abstract
Fe3O4 nanoparticles were grown in situ on carbon nanotubes (CNTs) by a solvothermal method. The Fe3O4/CNTs composites were characterised by the Brunauer-Emmett-Teller method and transmission electron microscopy. The results indicated that the Fe3O4 nanoparticles were uniformly deposited on CNTs, and the average diameter was approximately 7.0 nm. The Fe3O4/CNTs were applied as an enzyme mimetic to decompose Orange II, and the decomposing conditions were optimised. At 500 mg L(-1) of Fe3O4/CNTs in the presence of 15.0 mmol L(-1) of H2O2, at 30°C, it degraded 94.0% of Orange II (0.25 mmol L(-1), pH = 3.5), showing higher catalytic activity than pure Fe3O4 nanoparticles. The high activity was attributed to the uniform Fe3O4 nanoparticles growing on the side walls of the CNTs and the synergetic effect between Fe3O4 and CNTs. The Fe3O4/CNTs maintained their activity at temperatures as high as 65°C. The Fe3O4/CNTs presented high reusability and stability even after eight uses. These data proved that the Fe3O4/CNTs-catalysed degradation is a promising technique for wastewater treatment. Fe3O4 nanoparticles were grown in situ on carbon nanotubes (CNTs) by a solvothermal method. The Fe3O4/CNTs was applied as a mimetic enzyme to decompose Orange II. The Fe3O4/CNTs were collected after the reaction by applying an external magnetic field and can use repeatedly.
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Affiliation(s)
- Jingheng Deng
- a State Joint Key Laboratory of Environment Simulation and Pollution Control, Department of Environmental Engineering, School of Environment , Tsinghua University , Beijing , People's Republic of China
- b Changsha Research Institute of Mining and Metallurgy , Changsha , People's Republic of China
| | - Xianghua Wen
- a State Joint Key Laboratory of Environment Simulation and Pollution Control, Department of Environmental Engineering, School of Environment , Tsinghua University , Beijing , People's Republic of China
| | - Jiaxi Li
- a State Joint Key Laboratory of Environment Simulation and Pollution Control, Department of Environmental Engineering, School of Environment , Tsinghua University , Beijing , People's Republic of China
- c Development and Reform Commission of Hunan Province , Changsha , People's Republic of China
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Luo F, Yang D, Chen Z, Megharaj M, Naidu R. One-step green synthesis of bimetallic Fe/Pd nanoparticles used to degrade Orange II. J Hazard Mater 2016; 303:145-53. [PMID: 26530891 DOI: 10.1016/j.jhazmat.2015.10.034] [Citation(s) in RCA: 40] [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: 06/06/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 05/22/2023]
Abstract
To reduce cost and enhance reactivity, bimetallic Fe/Pd nanoparticles (NPs) were firstly synthesized using grape leaf aqueous extract to remove Orange II. Green synthesized bimetallic Fe/Pd NPs (98.0%) demonstrated a far higher ability to remove Orange II in 12h compared to Fe NPs (16.0%). Meanwhile, all precursors, e.g., grape leaf extract, Fe(2+) and Pd(2+), had no obvious effect on removing Orange II since less than 2.0% was removed. Kinetics study revealed that the removal rate fitted well to the pseudo-first-order reduction and pseudo-second-order adsorption model, meaning that removing Orange II via Fe/Pd NPs involved both adsorption and catalytic reduction. The remarkable stability of Fe/Pd NPs showed the potential application for removing azo dyes. Furthermore, Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the changes in Fe/Pd NPs before and after reaction with Orange II. High Performance Liquid Chromatography-Mass Spectrum (HPLC-MS) identified the degraded products in the removal of Orange II, and finally a removal mechanism was proposed. This one-step strategy using grape leaf aqueous extract to synthesize Fe/Pd NPs is simple, cost-effective and environmentally benign, making possible the large-scale production of Fe/Pd NPs for field remediation.
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Affiliation(s)
- Fang Luo
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Die Yang
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Zuliang Chen
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ravendra Naidu
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia
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Luo F, Yang D, Chen Z, Megharaj M, Naidu R. The mechanism for degrading Orange II based on adsorption and reduction by ion-based nanoparticles synthesized by grape leaf extract. J Hazard Mater 2015; 296:37-45. [PMID: 25910458 DOI: 10.1016/j.jhazmat.2015.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 01/15/2015] [Revised: 04/07/2015] [Accepted: 04/10/2015] [Indexed: 05/24/2023]
Abstract
Biomolecules taken from plant extracts have often been used in the single-step synthesis of iron-based nanoparticles (Fe NPs) due to their low cost, environmental safety and sustainable properties. However, the composition of Fe NPs and the degradation mechanism of organic contaminants by them are limited because these are linked to the reactivity of Fe NPs. In this study, Fe NPs synthesized by grape leaf extract served to remove Orange II. Batch experiments showed that more than 92% of Orange II was removed by Fe NPs at high temperature based on adsorption and reduction and confirmed by kinetic studies. To understand the role of Fe NPs in the removal process of azo dye, surface analysis via X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were employed, showing that the Fe NPs were composed of biomolecules, hydrous iron oxides and Fe(0), thus providing evidence for the adsorption of Orange II onto hydrous iron oxides and its reduction by Fe(0). Degraded products such as 2-naphthol were identified using LC-MS analysis. A degradation mechanism based on asymmetrical azo bond cleavage for the removal of Orange II was proposed.
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Affiliation(s)
- Fang Luo
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Die Yang
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Zuliang Chen
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Mallavarapu Megharaj
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Ravendra Naidu
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
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Li H, Li Y, Xiang L, Huang Q, Qiu J, Zhang H, Sivaiah MV, Baron F, Barrault J, Petit S, Valange S. Heterogeneous photo-Fenton decolorization of Orange II over Al-pillared Fe-smectite: response surface approach, degradation pathway, and toxicity evaluation. J Hazard Mater 2015; 287:32-41. [PMID: 25621831 DOI: 10.1016/j.jhazmat.2015.01.023] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [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: 09/04/2014] [Revised: 12/21/2014] [Accepted: 01/07/2015] [Indexed: 05/29/2023]
Abstract
A ferric smectite clay material was synthesized and further intercalated with Al2O3 pillars for the first time with the aim of evaluating its ability to be used as heterogeneous catalyst for the photo-Fenton decolorization of azo dye Orange II. UV irradiation was found to enhance the activity of the catalyst in the heterogeneous photo-Fenton process. Catalyst loading of 0.5g/L and hydrogen peroxide concentration of 13.5mM yielded a remarkable color removal, accompanied by excellent catalyst stability. The decolorization of Orange II followed the pseudo-first-order kinetics for initial dye concentrations from 20 to 160mg/L. The central composite design (CCD) based on the response surface methodology (RSM) was applied to evaluate the effects of several operating parameters, namely initial pH, catalyst loading and hydrogen peroxide concentration, on the decolorization efficiency. The RSM model was derived and the response surface plots were developed based on the results. Moreover, the main intermediate products were separated and identified using gas chromatography-mass spectrometry (GC-MS) and a possible degradation pathway was proposed accordingly. The acute toxicity experiments illustrated that the Daphniamagna immobilization rate continuously decreased during 150min reaction, indicating that the effluent was suitable for sequential biological treatment.
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Affiliation(s)
- Huiyuan Li
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China
| | - Yanli Li
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China
| | - Luojing Xiang
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China; Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France
| | - Qianqian Huang
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China
| | - Juanjuan Qiu
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China
| | - Hui Zhang
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China.
| | - Matte Venkata Sivaiah
- Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France
| | - Fabien Baron
- Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France
| | - Joel Barrault
- Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France
| | - Sabine Petit
- Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France
| | - Sabine Valange
- Université de Poitiers, UMR CNRS 7285, IC2MP, ENSIP, B1, 1 rue Marcel Doré, TSA 41105, Poitiers 86073 Cedex 9, France.
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García ER, Medina RL, Lozano MM, Hernández Pérez I, Valero MJ, Franco AMM. Adsorption of Azo-Dye Orange II from Aqueous Solutions Using a Metal-Organic Framework Material: Iron- Benzenetricarboxylate. Materials (Basel) 2014; 7:8037-57. [PMID: 28788289 DOI: 10.3390/ma7128037] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 11/19/2014] [Accepted: 12/03/2014] [Indexed: 01/25/2023]
Abstract
A Metal-Organic Framework (MOF), iron-benzenetricarboxylate (Fe(BTC)), has been studied for the adsorptive removal of azo-dye Orange II from aqueous solutions, where the effect of various parameters was tested and isotherm and kinetic models were suggested. The adsorption capacities of Fe(BTC) were much higher than those of an activated carbon. The experimental data can be best described by the Langmuir isotherm model (R2 > 0.997) and revealed the ability of Fe(BTC) to adsorb 435 mg of Orange II per gram of adsorbent at the optimal conditions. The kinetics of Orange II adsorption followed a pseudo-second-order kinetic model, indicating the coexistence of physisorption and chemisorption, with intra-particle diffusion being the rate controlling step. The thermodynamic study revealed that the adsorption of Orange II was feasible, spontaneous and exothermic process (−25.53 kJ·mol−1). The high recovery of the dye showed that Fe(BTC) can be employed as an effective and reusable adsorbent for the removal of Orange II from aqueous solutions and showed the economic interest of this adsorbent material for environmental purposes.
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26
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Huang J, Chu S, Chen J, Chen Y, Xie Z. Enhanced reduction of an azo dye using henna plant biomass as a solid-phase electron donor, carbon source, and redox mediator. Bioresour Technol 2014; 161:465-8. [PMID: 24759768 DOI: 10.1016/j.biortech.2014.03.143] [Citation(s) in RCA: 4] [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: 01/11/2014] [Revised: 03/21/2014] [Accepted: 03/26/2014] [Indexed: 05/24/2023]
Abstract
The multiple effects of henna plant biomass as a source of carbon, electron donor, and redox mediator (RM) on the enhanced bio-reduction of Orange II (AO7) were investigated. The results indicated that the maximum AO7 reduction rate in the culture with henna powder was ∼6-fold that in the sludge control culture lacking henna. On the one hand, AO7 reduction can be advantageously enhanced by the release of available electron donors; on the other hand, the associated lawsone can act as a fixed RM and play a potential role in shuttling electrons from the released electron donors to the final electron acceptor, AO7. The soluble chemical oxygen demand (SCOD) during each experiment and the FTIR spectra suggested that the weakened AO7 reduction along with the retention of henna powder might not be attributed to the lack of fixed lawsone but rather to the insufficiency of electron donors.
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Affiliation(s)
- Jingang Huang
- Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
| | - Shushan Chu
- Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Jianjun Chen
- Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Yi Chen
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, 16521 Prague 6, Czech Republic
| | - Zhengmiao Xie
- Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
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27
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Dükkancı M, Vinatoru M, Mason TJ. The sonochemical decolourisation of textile azo dye Orange II: effects of Fenton type reagents and UV light. Ultrason Sonochem 2014; 21:846-853. [PMID: 24071562 DOI: 10.1016/j.ultsonch.2013.08.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/16/2013] [Accepted: 08/27/2013] [Indexed: 06/02/2023]
Abstract
The removal of Orange II (O-II) from aqueous solution under irradiation at 850 kHz has been studied. The effects of both homogeneous (with FeSO4/H2O2), and heterogeneous (Fe containing ZSM-5 zeolite/H2O2) Fenton type reagents are reported together with the effect of UV irradiation in combination with ultrasound both alone and with homogeneous Fenton-type reagent. Degrees of decolourisation of 6.5% and 28.9% were observed using UV radiation and ultrasound, respectively, whereas under the simultaneous irradiation of ultrasound and UV light, the decolourisation degree reached 47.8%, indicating a synergetic effect of ultrasound and UV light. The decolourisation was increased with the addition of Fenton's reagent with an optimal Fenton molar reagent ratio, Fe(2+):H2O2 of 1:50. In the combined process of ultrasound and UV light with the homogeneous Fenton system 80.8% decolourisation could be achieved after 2h indicating that UV improves this type of Orange II degradation. The degree of decolourisation obtained using the heterogeneous sono-Fenton system (Fe containing ZSM-5 zeolite catalysts+H2O2+ultrasound) were consistently lower than the traditional homogeneous ultrasound Fenton system. This can be attributed to the greater difficulty of the reaction between Fe ions and hydrogen peroxide. In all cases the Orange II ultrasonic decolourisation was found to follow first order kinetics.
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Affiliation(s)
- Meral Dükkancı
- Ege University, Faculty of Engineering, Chemical Engineering Department, 35100 Bornova, İzmir, Turkey.
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28
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Li F, Li G, Zhang X. Mechanism of enhanced removal of quinonic intermediates during electrochemical oxidation of Orange II under ultraviolet irradiation. J Environ Sci (China) 2014; 26:708-715. [PMID: 25079285 DOI: 10.1016/s1001-0742(13)60435-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 03/02/2013] [Revised: 11/18/2013] [Accepted: 11/25/2013] [Indexed: 06/03/2023]
Abstract
The effect of ultraviolet irradiation on generation of radicals and formation of intermediates was investigated in electrochemical oxidation of the azo-dye Orange II using a TiO2-modified β-PbO2 electrode. It was found that a characteristic absorbance of quinonic compounds at 255 nm, which is responsible for the rate-determining step during aromatics degradation, was formed only in electrocatalytic oxidation. The dye can be oxidized by either HO radicals or direct electron transfer. Quinonic compounds were produced concurrently. The removal of TOC by photo-assisted electrocatalytic oxidation was 1.56 times that of the sum of the other two processes, indicating a significant synergetic effect. In addition, once the ultraviolet irradiation was introduced into the process of electrocatalytic oxidation, the degradation rate of quinonic compounds was enhanced by as much as a factor of two. The more efficient generation of HO radicals resulted from the introduction of ultraviolet irradiation in electrocatalytic oxidation led to the significant synergetic effect as well as the inhibiting effect on the accumulation of quinonic compounds.
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Affiliation(s)
- Fazhan Li
- Institute of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China.
| | - Guoting Li
- Institute of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China.
| | - Xiwang Zhang
- Department of Chemical Engineering, Monash University, Clayton Vic 3800, Australia
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