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Yuan J, Chen X, Wang X, Guo Y, Ren L, Niu C, Li Y. A sequencing electroreduction-electrooxidation system driven by atomic hydrogen for enhancing 2,4-dichloronitrobenzene removal from wastewater. ENVIRONMENTAL RESEARCH 2024; 252:118986. [PMID: 38663671 DOI: 10.1016/j.envres.2024.118986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/18/2024] [Accepted: 04/21/2024] [Indexed: 04/29/2024]
Abstract
The sequencing electroreduction-electrooxidation process has emerged as a promising approach for the degradation of the chloronitrobenzenes (CNBs) due to its elimination of electro-withdrawing groups in the reduction process, facilitating further removal in the subsequent oxidation process. Herein, we developed a cathode consisting of atom Pd on a Ti plate, which enabled the electro-generation of atomic hydrogen (H*) and the efficient electrocatalytic activation of H2O2 to hydroxyl radical (•OH). Cyclic voltammetry (CV) curves and electron spin resonance (ESR) spectra verified the existence of H* and •OH. The electroreduction-electrooxidation system achieved 94.7% of 20 mg L-1 2,4-DCNB removal with a relatively low H2O2 addition (5 mM). Moreover, the inhibition rate of Photobacterium phosphoreum in the effluent decreased from 95% to 52% after the sequencing electroreduction-electrooxidation processes. It was further revealed that the H* dominated the electroreduction process and triggered the electrooxidation process. Our work sheds light on the effective removal of electron-withdrawing groups substituted aromatic contaminants from water and wastewater.
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Affiliation(s)
- Jia Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Xi Chen
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Xueye Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Yun Guo
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Lehui Ren
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Chengxin Niu
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China
| | - Yang Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Tongji Advanced Membrane Technology Center, Shanghai, 200092, China.
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2
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Zhang P, Xie C, Li Y, Sun B, Yao S, He J, Zhang K, Zhu S, Kong L. Effective reinforcement ozone oxidation degradation of N,N-dimethylformamide with cobalt doping micro electrolysis composite. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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3
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Du X, Liu J, Liu Q, Li G, Jiang Y, Zhang Y. Characteristic analysis of s-Fe/Cu two-component micro-electrolysis materials and degradation of dye wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:46574-46586. [PMID: 36717421 DOI: 10.1007/s11356-023-25477-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Micro-electrolysis is a pretreatment technology for difficult-to-biodegrade wastewater. In this study, a chemical displacement method was used to load copper on the surface of sponge iron (s-Fe), and then it was mixed with activated carbon and other components to obtain a multi-element micro-electrolytic filler (OMEF). Through BET, SEM, XRD, XPS, and FT-IR characterization and analysis, OMEF was proved to have a specific surface area of 88.374 m2/g, C-C, C-O, C = O, O-C = O, and other functional groups and Fe3C, MnO2 and other active materials. The removal mechanism of organic pollutants in wastewater by OMEF could be due to the galvanic reaction, direct reduction of Fe, oxidation of Fe, catalytic oxidation of Cu and Mn, and co-precipitation of adsorption. The coupling of the micro-electrolysis and biological methods proved that OMEF had excellent application efficiency. The results indicated that the COD removal rates of OMEF and commercial fillers reached 88.39% and 48.02%, respectively, and the B/C reached 0.74 and 0.3. OMEF showed a better performance. The reusability of the OMEF filler was measured to ensure that the B/C was maintained at around 0.5 during 5 cycles. Kinetic analysis showed that the degradation data of methyl orange (MO) and the removal data of COD obeyed pseudo-second-order kinetics. Moreover, it can further broaden the pH range of treated wastewater and increase the oxidation rate. This new strategy has brought potential enlightenment for the development of high-efficiency wastewater pretreatment using new micro-electrolysis materials. The excellent performance of OMEF micro-electrolytic filler in pretreatment indicated its potential for industrial application.
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Affiliation(s)
- Xiaosen Du
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
| | - Jin Liu
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin, 300457, People's Republic of China
| | - Qing Liu
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
| | - Guiju Li
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China.
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin, 300457, People's Republic of China.
| | - Yongqing Jiang
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
| | - Yaxin Zhang
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
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An J, Wang Q, Shang X, Ma J, Bao H, Wu D, Zhang Y, Wang T, Jia H. Aerobic and anaerobic regulation induced different degradation behaviors of parachloronitrobenzene in soil by microwave activated persulfate oxidation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Wei K, Wan Y, Liao M, Cao S, Zhang H, Peng X, Gu H, Ling C, Li M, Shi Y, Ai Z, Gong J, Zhang L. A controllable reduction-oxidation coupling process for chloronitrobenzenes remediation: From lab to field trial. WATER RESEARCH 2022; 218:118453. [PMID: 35489147 DOI: 10.1016/j.watres.2022.118453] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/06/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Chloronitrobenzenes (CNBs) are typical refractory aromatic pollutants. The reduction products of CNBs often possess higher toxicity, and the electron-withdrawing substituent groups are detrimental to the ring-opening during the oxidation treatment, leading to ineffective removal of CNBs by either reduction or oxidation technology. Herein we demonstrate a controllable reduction-oxidation coupling (ROC) process composed of zero-valent iron (ZVI) and H2O2 for the effective removal of CNBs from both water and soil. In water, ZVI first reduced p-CNB into 4-chloronitrosobenzene and 4-chloroaniline intermediates, which were then suffered from the subsequent oxidative ring-opening by ·OH generated from the reaction between Fe(II) and H2O2. By controlling the addition time of H2O2, the final mineralization rate of p-CNB reached 6.6 × 10-1 h-1, about 74 times that of oxidation alone (9.0 × 10-3 h-1). More importantly, this controllable ROC process was also applicable for the site remediation of CNBs contaminated soil by either ex-situ treatment or in-situ injection, and, respectively decreased the concentrations of p-CNB, m-CNB, and o-CNB from 1105, 980, and 94 mg/kg to 3, 1, and < 1mg/kg, meeting the remediation goals (p-CNB: < 32.35 mg/kg, o-CNB and m-CNB: < 1.98 mg/kg). These laboratory and field trial results reveal that this controllable ROC strategy is very promising for the treatment of electron-withdrawing groups substituted aromatic contaminates.
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Affiliation(s)
- Kai Wei
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Yanyan Wan
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Minzi Liao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Shiyu Cao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Hao Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Xing Peng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Huayu Gu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Cancan Ling
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Meiqi Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Yanbiao Shi
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Zhihui Ai
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China.
| | - Jingming Gong
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China
| | - Lizhi Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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New insights into iron/nickel-carbon ternary micro-electrolysis toward 4-nitrochlorobenzene removal: Enhancing reduction and unveiling removal mechanisms. J Colloid Interface Sci 2022; 612:308-322. [PMID: 34998191 DOI: 10.1016/j.jcis.2021.12.116] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/07/2021] [Accepted: 12/18/2021] [Indexed: 12/11/2022]
Abstract
The ternary micro-electrolysis material iron/nickel-carbon (Fe/Ni-AC) with enhanced reducibility was constructed by introducing the trace transition metal Ni based on the iron/carbon (Fe/AC) system and used for the removal of 4-nitrochlorobenzene (4-NCB) in solution. The composition and structures of the Fe/Ni-AC were analyzed by various characterizations to estimate its feasibility as reductants for pollutants. The removal efficiency of 4-NCB by Fe/Ni-AC was considerably greater than that of Fe/AC and iron/nickel (Fe/Ni) binary systems. This was mainly due to the enhanced reducibility of 4-NCB by the synergism between anode and double-cathode in the ternary micro-electrolysis system (MES). In the Fe/Ni-AC ternary MES, zero-iron (Fe0) served as anode involved in the formation of galvanic couples with activated carbon (AC) and zero-nickel (Ni0), respectively, where AC and Ni0 functioned as double-cathode, thereby promoting the electron transfer and the corrosion of Fe0. The cathodic and catalytic effects of Ni0 that existed simultaneously could not only facilitate the corrosion of Fe0 but also catalyze H2 to form active hydrogen (H*), which was responsible for 4-NCB transformation. Besides, AC acted as a supporter which could offer the reaction interface for in-situ reduction, and at the same time provide interconnection space for electrons and H2 to transfer from Fe0 to the surface of Ni0. The results suggest that a double-cathode of Ni0 and AC could drive much more electrons, Fe2+ and H*, thus serving as effective reductants for 4-NCB reduction.
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7
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Iron Carbon Catalyst Initiated the Generation of Active Free Radicals without Oxidants for Decontamination of Methylene Blue from Waters. Catalysts 2022. [DOI: 10.3390/catal12040388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In conventional oxidation technologies for treatment of contaminated waters, secondary pollution of the aqueous environment often occurs because of the additional oxidants generated during the process. To avoid this problem, Fe/NG catalyst composites without additives were developed in this study for decontamination of methylene blue (MB) from waters. The Fe/NG catalyst, composed of carbon nitride and iron chloride (FeCl3·6H2O), was prepared by high temperature pyrolysis. It is an exceptionally efficient, recoverable, and sustainable catalyst for degradation of organic matter. The morphological characteristics, chemical structure, and surface properties of the catalyst composites were investigated. The catalyst exhibited high MB removal efficiency (100%) within 30 min under ambient temperature and dark conditions. The experiments indicated that an MB degradation effect was also applicable under most acid–base conditions (pH = 2–10). The characterization results using electron spin resonance and analysis of intermediate products demonstrated that free radicals such as ·OH and ·O2− were produced from the Fe/NG composites in the heterogeneous system, which resulted in the high MB degradation efficiency. Moreover, the catalysis reaction generated reducing substances, triggering iron carbon micro-electrolysis to spontaneously develop a microcurrent, which assisted the degradation of MB. This study demonstrates the feasibility of Fe/NG catalysts that spontaneously generate active species for degrading pollutants in an aqueous environment at normal temperature, providing an attractive approach for treating organic-contaminated waters.
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Zhai Q, Liu R, Wang C, Wen X, Li X, Sun W. A novel scheme for the utilization of Cu slag flotation tailings in preparing internal electrolysis materials to degrade printing and dyeing wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127537. [PMID: 34879526 DOI: 10.1016/j.jhazmat.2021.127537] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/23/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
About 60 million tons of Fe-rich Cu slag (IRCS) are generated annually worldwide during Cu slag flotation and cause irreversible water and soil pollution. Current research provides an environmentally friendly technology, the preparation of internal electrolysis materials (IEMs) through the carbothermal reduction of IRCS, for the degradation of printing and dyeing wastewater. XRD and SEM-EDS indicated that carbothermal reduction could promote the conversion of fayalite to zero-valent iron (ZVI), and ZVI could effectively form IEM with residual carbon. The degradation capacity of IEM for methylene blue (MB) was remarkably improved compared with raw IRCS after roasting for 60 min at 1100 °C with 35% anthracite dosage. MB degradation efficiency improved by increasing the IEM dosage and reaction temperature and decreasing the MB concentration and solution pH. FTIR, XRD, SEM-EDS, and XPS all detected the formation of Fe oxide or Fe hydroxide. UV-vis and TOC demonstrated that the characteristic groups of MB were destroyed and resulted in the mineralization of MB. MB degradation could be attributed to the Fe2+, [H], and ·OH produced by the galvanic reaction induced by IEM. Overall, this study offers theoretical guidance in the treatment of printing and dyeing wastewater and the reuse of IRCS.
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Affiliation(s)
- Qilin Zhai
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Runqing Liu
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China.
| | - Changtao Wang
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Xiaofei Wen
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Xiong Li
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Wei Sun
- School of Resources Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
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9
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Removal of nitrobenzene from aqueous solution by graphene/biochar supported nanoscale zero-valent-iron: Reduction enhancement behavior and mechanism. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119146] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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10
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Synthesis of a ternary microscopic ball-shaped micro-electrolysis filler and its application in wastewater treatment. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Liu C, Chen X, Banwart SA, Du W, Yin Y, Guo H. A novel permeable reactive biobarrier for ortho-nitrochlorobenzene pollution control in groundwater: Experimental evaluation and kinetic modelling. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126563. [PMID: 34271441 DOI: 10.1016/j.jhazmat.2021.126563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 06/25/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Three novel permeable reactive barrier (PRB) materials composed of Cu/Fe with 0.24% and 0.43% (w/w) Cu loadings or Fe0 supported on wheat straw were prepared (termed materials E, F and G). These materials exhibited excellent pollutant removal efficiency and physical stability as well as the ongoing release of organic carbon and iron. Column experiments showed that materials E, F and G removed almost 100% of ortho-nitrochlorobenzene (o-NCB) from water. The rates of iron release from the E and F columns exceeded those from column G but this had no significant effect on o-NCB removal. The bacteria that degraded o-NCB in E and F were also different from those in G. The levels of these bacteria in the columns were higher than those in the initial materials, with the highest level in column E. The simultaneous reduction and microbial degradation of o-NCB was observed, with the latter being dominant. A kinetic model was established to simulate the dynamic interactions and accurately predicted the experimental results. Organic carbon from the wheat straw supported the majority of the biomass in each column, which was essential for the bioremediation process. The findings of this study suggest an economically viable approach to mitigating o-NCB pollution.
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Affiliation(s)
- Cuicui Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Xiaohui Chen
- School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Steven A Banwart
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK; Global Food and Environment Institute, University of Leeds, Leeds LS2 9JT, UK
| | - Wenchao Du
- School of the Environment, Nanjing Normal University, Nanjing 210023, China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Joint International Research Centre for Critical Zone Science-University of Leeds and Nanjing University, Nanjing University, Nanjing 210023, China.
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12
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Li X, Jia Y, Qin Y, Zhou M, Sun J. Iron-carbon microelectrolysis for wastewater remediation: Preparation, performance and interaction mechanisms. CHEMOSPHERE 2021; 278:130483. [PMID: 34126692 DOI: 10.1016/j.chemosphere.2021.130483] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
Rapid industrialization and urbanization have produced a lot of hazardous substances in water and wastewater, which has turned into a crucial issue to the environment and the public health. Recently, iron carbon microelectrolysis (IC-ME) has attracted extensive attention in environmental remediation due to its low costs and excellent performance. Nevertheless, there is still a lack of a more systematic review on IC-ME preparation methods, their performance, and the interaction mechanisms of IC-ME in the remediation of wastewater. Herein, this work summarizes the synthetic methods, application of IC-ME materials, and the mechanism of pollutant removal by IC-ME. A variety approaches have been applied to prepare IC-ME materials, and the preparation methods and conditions have a certain influence on the properties of IC-ME materials, thus affecting the performance of pollutant removal. The mechanisms of IC-ME for contaminants removal are very complex, including adsorption, coprecipitation, reduction, surface complexation, and oxidation. Moreover, research vacant fields and problems that existed in the application of IC-ME are proposed. At last, the problems to be addressed to adapt IC to future applications are introduced. This paper reviews and prospects IC-ME wastewater remediation technology, which provides a reference for further scientific research and engineering applications.
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Affiliation(s)
- Xiang Li
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China.
| | - Yan Jia
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
| | - Yang Qin
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environ. Technol. for Complex Trans-Media Pollution, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
| | - Jianhui Sun
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
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Xu Z, Sun Z, Zhou Y, Zhang D, Gao Y, Chen W. Enhanced reactivity and electron selectivity of GAC-Fe-Cu ternary micro-electrolysis system toward p-chloronitrobenzene under oxic conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:123122. [PMID: 33027877 DOI: 10.1016/j.jhazmat.2020.123122] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
A novel GAC-Fe-Cu ternary micro-electrolysis system was synthesized for the removal of p-chloronitrobenzene (p-CNB) under oxic conditions. p-CNB could be efficiently removed by GAC-Fe-Cu at a wide initial pH range of 1.0-9.0. In particular, the p-CNB removal efficiency of 96.96 % was obtained at initial pH of 7.2, and the degradation (44.96 %) was the major removal pathway. Additionally, reduction and oxidation simultaneously contributed to the degradation of p-CNB. The results indicated that OH was the prime reactive species under acidic conditions while O2- dominated the degradation of p-CNB under neutral conditions. Reduction reaction was remarkably enhanced in the presence of dissolved oxygen and the iron corrosion could be accelerated by in-situ generated H2O2. Furthermore, XPS analysis of GAC-Fe-Cu revealed the surface-mediated electron transfer and oxidant generation process. The excellent degradation efficiency of p-CNB at initial pH of 7.2 was attributed to the enhanced electron selectivity of GAC-Fe-Cu as well as the high selectivity of near-surface generated O2- toward p-CNB and its intermediate products.
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Affiliation(s)
- Zhihua Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China
| | - Zhenhua Sun
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China
| | - Yuwei Zhou
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China.
| | - Yuquan Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China
| | - Weifang Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai 200093, PR China.
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14
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Xu Z, Gao Y, Sun Z, Zhang D, Zhou Y, Chen W. New insights into the reinforced reduction performance of Fe 0/C internal electrolysis activated by persulfate for p-nitrophenol removal. CHEMOSPHERE 2020; 254:126899. [PMID: 32957294 DOI: 10.1016/j.chemosphere.2020.126899] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/24/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
In this study, the reduction of iron-carbon internal electrolysis was reinforced by persulfate for p-nitrophenol removal. The effects of persulfate dosage, initial pH and iron-carbon mass ratio were comprehensively studied in batch experiments. In the system of iron-carbon internal electrolysis coupled with persulfate, the iron-carbon internal electrolysis and persulfate had a significant mutual influence, exhibiting a wide range of pH in the treatment process. Moreover, the coupled system also showed the remarkable removal and degradation efficiency of p-nitrophenol according to the contrast experiments. The satisfactory results should be attributed to the potential reduction of iron-carbon internal electrolysis, which was stimulated by persulfate to transform the nitro group to the amine group, accompanying the subsequent oxidation. Furthermore, persulfate possessed the ability that the dynamically destructive effect on external and internal of Fe0 and the scavenging action on activated carbon, effectively strengthening the potential energy for release and transfer of reductive substances. Both HO• and SO4•- as the main free radicals were formed to mineralize the intermediates in the coupled system. These findings indicate that the system of iron-carbon internal electrolysis coupled with persulfate can be a promising strategy for the treatment of the toxic and refractory wastewater.
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Affiliation(s)
- Zhihua Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China.
| | - Yuquan Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Zhenhua Sun
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Yuwei Zhou
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Weifang Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China.
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Reza Samarghandi M, Tari K, Shabanloo A, Salari M, Zolghadr Nasab H. Synergistic degradation of acid blue 113 dye in a thermally activated persulfate (TAP)/ZnO-GAC oxidation system: Degradation pathway and application for real textile wastewater. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116931] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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