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Zhu Z, Guo F, Li A, Xu W, Zhang X. Simple synthesis of BiOI/ZnO/rGO for efficient photocatalytic degradation of antibiotic chloramphenicol under visible light. J Environ Sci (China) 2023; 134:65-76. [PMID: 37673534 DOI: 10.1016/j.jes.2022.05.045] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 09/08/2023]
Abstract
BiOI/ZnO/rGO (reduced graphene oxide) composite photocatalyst was fabricated using a simple one-step hydrothermal process and applied to the degradation of antibiotic chloramphenicol (CAP). By tuning the Bi/Zn ratios, the structure and photoelectric properties of the catalyst were investigated and characterized in terms of their morphological, structural, optical and photoelectrochemical properties. The as-synthesized composite photocatalysts are well-crystalline, uniform dispersion and exhibit good photocatalytic properties. The photocatalytic degradation rate of CAP by BiOI/ZnO/rGO composite is 8.1 times and 1.8 times that of BiOI and ZnO, respectively. The photocatalytic mechanism studies revealed that the synergistic effect between rGO and BiOI/ZnO can effectively separate photogenerated electron-hole, enhance photocurrents and conductivity, and improve charge carrier densities. Moreover, BiOI/ZnO/rGO possesses good stability and reusability that the degradation efficiency remained above 80% even after 5 recycling. This study reveals that both the introduction of rGO and heterostructure construction between BiOI and ZnO play a crucial role in their photoelectrochemical and photocatalytic properties.
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Affiliation(s)
- Zihan Zhu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Feng Guo
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China.
| | - Anming Li
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Weichao Xu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xuehan Zhang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
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2
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Jebalbarezi B, Dehghanzadeh R, Sheikhi S, Shahmahdi N, Aslani H, Maryamabadi A. Oxidative degradation of sulfamethoxazole from secondary treated effluent by ferrate(VI): kinetics, by-products, degradation pathway and toxicity assessment. J Environ Health Sci Eng 2022; 20:205-218. [PMID: 35669795 PMCID: PMC9163226 DOI: 10.1007/s40201-021-00769-9] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 12/11/2021] [Indexed: 06/15/2023]
Abstract
UNLABELLED Sulfamethoxazole (SMX) is a typical antibiotic in the world, which is frequently detected in the aquatic environment. The current study was aimed to investigate the SMX degradation in secondary treated wastewater using potassium Ferrate [Fe(VI)]. The effects of various experimental conditions, EDTA and phosphate as chelating agents, and toxicity assessment were also considered. Secondary treated effluent was spiked with predefined SMX concentrations, and after desired reaction time with Fe(VI), residual SMX was measured using HPLC. Results indicated that SMX degradation by Fe(VI) was favored under acidic condition, where 90% of SMX degradation was achieved after 120 min. Fe(VI) and SMX reaction obeyed first-order kinetic; meantime, the SMX degradation rate under pH 3 was 7.6 times higher than pH 7. The presence of phosphate (Na2HPO4) and EDTA declined SMX degradation, while Fe (III) effect was contradictory. In addition to promising demolition, 10% TOC removal was achieved. Eighteen major intermediates were identified using LC-MS/MS and the degradation pathways were suggested. Transformation products (TPs) were formed due to hydroxylation, bond cleavage, transformation after bond cleavage, and oxidation reactions. The ECOSAR analysis showed that some of the SMX oxidation products were toxic to aquatic organisms (fish, daphnia and green algae). SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40201-021-00769-9.
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Affiliation(s)
- Behjat Jebalbarezi
- Student research committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Environmental Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Dehghanzadeh
- Student research committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samira Sheikhi
- Department of Environmental Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Najmeh Shahmahdi
- Student research committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Aslani
- Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Gao YQ, Zhou JQ, Ning H, Rao YY, Gao NY. Electrochemically activated peroxymonosulfate for the abatement of chloramphenicol in water: performance and mechanism. Environ Sci Pollut Res Int 2022; 29:17866-17877. [PMID: 34674129 DOI: 10.1007/s11356-021-17089-y] [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: 05/23/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
In this study, electrochemically activated peroxymonosulfate (EC/PMS) with a sacrificial iron electrode was used for the removal of chloramphenicol (CAP) from water. Compared to electrolysis alone, peroxymonosulfate (PMS) alone, and Fe2+/PMS, EC/PMS significantly enhanced the CAP degradation. Various parameters, such as the applied current, electrolyte concentration, and PMS dose, were investigated to optimize the process. In addition, acidic conditions facilitated the CAP degradation. The presence of Cl- slightly enhanced the CAP degradation, while both HCO3- and NO3- exhibited an inhibitory effect on the CAP degradation. The floccules were also analyzed after the reaction by XPS and XRD. Quenching experiments indicated that both sulfate radicals (SO4●-) and hydroxyl radicals (•OH) were responsible for the CAP degradation. In addition, the degradation products were identified by LC/TOF/MS, and the degradation pathways were proposed accordingly. These results indicated that EC/PMS is a promising treatment process for the remediation of water polluted by CAP.
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Affiliation(s)
- Yu-Qiong Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Jin-Qiang Zhou
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Han Ning
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yan-Yan Rao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Nai-Yun Gao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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Wang L, Lv S, Wang X, Liu B, Wang Z. Ferrate (VI) Oxidation Is an Effective and Safe Way to Degrade Residual Colistin - a Last Resort Antibiotic - in Wastewater. Front Vet Sci 2022; 8:773089. [PMID: 35004924 PMCID: PMC8739907 DOI: 10.3389/fvets.2021.773089] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
The rise of novel mcr mobile resistance genes seriously threatens the use of colistin as a last resort antibiotic for treatment of multidrug-resistant Gram-negative bacterial infections in humans. Large quantities of colistin are released annually into the environment through animal feces. This leads to environmental toxicity and promotes horizontal transmission of the mcr gene in aqueous environments. We examined colistin degradation catalyzed by the presence of strong oxidant Fe (VI). We found almost complete colistin degradation (>95%) by Fe (VI) at initial colistin levels of 30 μM at a molar ratio of Fe (VI): colistin of 30 using an initial pH 7.0 at 25°C for 60 min. The presence of humic acid did not alter the degradation rate and had no significant impact on the removal of colistin by Fe (VI). Quantitative microbiological assays of Fe (VI)-treated colistin solutions using Escherichia coli, Staphylococcus aureus, and Bacillus subtilis indicated that the residual antibacterial activity was effectively eliminated by Fe (VI) oxidation. Luminescent bacteria toxicity tests using Vibrio fischeri indicated that both colistin and its degradation products in water were of low toxicity and the products showed decreased toxicity compared to the parent drug. Therefore, Fe (VI) oxidation is a highly effective and environment-friendly strategy to degrade colistin in water.
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Affiliation(s)
- Liqi Wang
- Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang, China
| | - Shiming Lv
- Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang, China
| | - Xiaoying Wang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Baosheng Liu
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Zhong Wang
- Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang, China
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Lin C, Wang Y, Wu M. Effectiveness of a 3-liter reactor with UV and persulfate in degrading chloramphenicol in water. J Taiwan Inst Chem Eng 2020; 111:155-61. [DOI: 10.1016/j.jtice.2020.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wang KM, Shu J, Wang SJ, Hong TY, Xu XP, Wang HY. Efficient electrochemical generation of ferrate(VI) by iron coil anode imposed with square alternating current and treatment of antibiotics. J Hazard Mater 2020; 384:121458. [PMID: 31676166 DOI: 10.1016/j.jhazmat.2019.121458] [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: 08/12/2019] [Revised: 09/19/2019] [Accepted: 10/10/2019] [Indexed: 06/10/2023]
Abstract
Anode passivation is still a main challenge for the electrochemical generation of ferrate(VI, Fe(VI)), leading to the reduction of Fe(VI) production efficiency. In this study, cyclic voltammetry, scanning electronic microscopy, and electrochemical impedance spectroscopy were used to select better anode electrode configurations (iron wire, iron gauze, and iron coil). The results indicate that iron coil had the least degree of passivation. Different imposed current waveforms during the electrochemical generation of Fe(VI) were also investigated, and the iron coil imposed with square alternating current (AC) wave can mitigate the anode passivation, resulting in higher Fe(VI) production efficiency. The optimum conditions for the electrochemical generation of Fe(VI) were evaluated and the optimum temperature (40 ℃), current density (10 mA/cm2), AC cycle period (15 s) and electrolyte concentrations (14 M NaOH) were identified. As a result, 0.12 mol/L Fe(VI) concentration and over 50% of current efficiency can be achieved after 3 h electrolysis. The generated Fe(VI) solution was further applied to oxidize doxycycline(DOX) and sulfadiazine(SDZ) as typical antibiotics. Over 80% of DOX can be removed at a Fe(VI) to DOX molar ratio of 5:1 (pH = 4-9), whilst a higher Fe(VI) to SDZ molar ratio of 20:1 (pH = 7) was needed to obtain 75% SDZ removal.
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Affiliation(s)
- K M Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - J Shu
- College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China
| | - S J Wang
- College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China
| | - T Y Hong
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - X P Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - H Y Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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Acosta-Rangel A, Sánchez-Polo M, Rozalen M, Rivera-Utrilla J, Polo AMS, Berber-Mendoza MS, López-Ramón MV. Oxidation of sulfonamides by ferrate(VI): Reaction kinetics, transformation byproducts and toxicity assesment. J Environ Manage 2020; 255:109927. [PMID: 32063308 DOI: 10.1016/j.jenvman.2019.109927] [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] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/10/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
This study was aimed at the degradation of sulfonamides (SNs) via oxidation with Fe(VI). The reaction kinetics, identification of degradation byproducts and their toxicity were investigated. The pH solution and Fe(VI) loading had significant effects on the degradation of the sulfonamides. The maximum degradation rate occurred at pH 3.0 with a 6:1 ratio Fe(VI): sulfonamide, obtaining 100% degradation of 15 mg L-1 SN within 5 min. Although Fe(VI) also showed an appreciable reactivity towards SNs (kapp = 9.85-19.63 × 102 M-1 s-1) at pH 7. The influence of solution pH on the values of kapp can be explained considering the specific reaction between Fe(VI) and SNs. Degradation rates are also influenced by the presence of inorganic ions in different water matrixes. For this reason, ions present in groundwater enhanced the SNs degradation through a synergistic effect among carbonates, sulfates and Fe(VI). Degradation byproducts identified, through UPLC analysis, allowed us to proposed three degradation pathways depending on pH. At acid pH there is a cleavage of C-S and S-N bonds. At neutral pH nitroso and nitro-derivates are formed. At basic pH hydroxylation is the main reaction. The cytotoxicity assay of HEK-293 and J774 cell lines exposed to Fe(VI) indicated that transformation byproducts had a lower toxicity than SNs as baseline products. Accordingly, this research suggests that Fe(VI) can act as a chemical oxidant to remove SNs antibiotics and it can be used to treat antibiotic pollution in wastewater.
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Affiliation(s)
- A Acosta-Rangel
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain; Center of Postgraduate Research and Studies, Faculty of Engineering, University Autonomous of San Luis Potosí, Av. Dr. M. Nava No. 8, San Luis Potosí, 78290, Mexico
| | - M Sánchez-Polo
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain.
| | - M Rozalen
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain
| | - J Rivera-Utrilla
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain
| | - A M S Polo
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain
| | - M S Berber-Mendoza
- Center of Postgraduate Research and Studies, Faculty of Engineering, University Autonomous of San Luis Potosí, Av. Dr. M. Nava No. 8, San Luis Potosí, 78290, Mexico
| | - M V López-Ramón
- Department of Inorganic and Organic Chemistry, Faculty of Experimental Science, University of Jaén, 23071, Jaén, Spain.
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8
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Zhang Z, Qiu J, Xiang R, Yu H, Xu X, Zhu L. Organic loading rate (OLR) regulation for enhancement of aerobic sludge granulation: Role of key microorganism and their function. Sci Total Environ 2019; 653:630-637. [PMID: 30414591 DOI: 10.1016/j.scitotenv.2018.10.418] [Citation(s) in RCA: 25] [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: 08/13/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
According to unique growth characteristics of various environmental microorganism specially with different substrates and their levels, aerobic sludge granulation are studied under different operation mode of influent organic loading rate (OLR), and the EPS component, sludge surface characters and functional microbes are analyzed to achieve a novel process for stable sludge granulation. Results showed that activated sludge cultivated under gradient influent OLR decreasing from 5.5 to 3.5 kgCOD m-3 d-1 achieved complete granulation with average size of 438 μm and exopolysaccharide (PS) to protein (PN) ratio over 2.0. Meanwhile, these granules had excellent flocculability and hydrophobicity with Zeta potential and contact angle of -15 mV and 110°, respectively. Principal component analysis (PCA) illustrated that microbes with function of EPS secretion enriched with decreased OLR regulation for their suitable specific growth characteristics, then promoted other microbes aggregation and sludge granulation along with the improvement of cellular surface characters and microbial niche.
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Affiliation(s)
- Zhiming Zhang
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Jianxiang Qiu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Ronghao Xiang
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Haitian Yu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Xiangyang Xu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China
| | - Liang Zhu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China.
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Zhao J, Wang Q, Fu Y, Peng B, Zhou G. Kinetics and mechanism of diclofenac removal using ferrate(VI): roles of Fe 3+, Fe 2+, and Mn 2. Environ Sci Pollut Res Int 2018; 25:22998-23008. [PMID: 29858998 DOI: 10.1007/s11356-018-2375-6] [Citation(s) in RCA: 3] [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: 01/20/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
In this study, the effect of Fe3+, Fe2+, and Mn2+ dose, solution pH, reaction temperature, background water matrix (i.e., inorganic anions, cations, and natural organic matters (NOM)), and the kinetics and mechanism for the reaction system of Fe(VI)/Fe3+, Fe(VI)/Fe2+, and Fe(VI)/Mn2+ were investigated systematically. Traces of Fe3+, Fe2+, and Mn2+ promoted the DCF removal by Fe(VI) significantly. The pseudo-first-order rate constant (kobs) of DCF increased with decreasing pH (9-6) and increasing temperature (10-30 °C) due to the gradually reduced stability and enhanced reactivity of Fe(VI). Cu2+ and Zn2+ ions evidently improved the DCF removal, while CO32- restrained it. Besides, SO42-, Cl-, NO3-, Mg2+, and Ca2+ almost had no influence on the degradation of DCF by Fe(VI)/Fe3+, Fe(VI)/Fe2+, and Fe(VI)/Mn2+ within the tested concentration. The addition of 5 or 20 mg L-1 NOM decreased the removal efficiency of DCF. Moreover, Fe2O3 and Fe(OH)3, the by-products of Fe(VI), slightly inhibited the DCF removal, while α-FeOOH, another by-product of Fe(VI), showed no influence at pH 7. In addition, MnO2 and MnO4-, the by-products of Mn2+, enhanced the DCF degradation due to catalysis and superposition of oxidation capacity, respectively. This study indicates that Fe3+ and Fe2+ promoted the DCF removal mainly via the self-catalysis for Fe(VI), and meanwhile, the catalysis of Mn2+ and the effect of its by-products (i.e., MnO2 and MnO4-) contributed synchronously for DCF degradation. Graphical abstract ᅟ.
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Affiliation(s)
- Junfeng Zhao
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Qun Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
| | - Yongsheng Fu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
| | - Bo Peng
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Gaofeng Zhou
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
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Zhao J, Liu Y, Wang Q, Fu Y, Lu X, Bai X. The self-catalysis of ferrate (VI) by its reactive byproducts or reductive substances for the degradation of diclofenac: Kinetics, mechanism and transformation products. Sep Purif Technol 2018; 192:412-8. [DOI: 10.1016/j.seppur.2017.10.030] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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