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Qiu B, Zhou X, Li W, Zhu H, Yu L, Yuan C, Dou R, Sun M, Wang S. A magnetically induced self-assembly of Ru@Fe 3O 4/rGO cathode for diclofenac degradation in electro-Fenton process. ENVIRONMENTAL RESEARCH 2024; 242:117781. [PMID: 38036212 DOI: 10.1016/j.envres.2023.117781] [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: 09/07/2023] [Revised: 10/28/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Abstract
In this study, a novel magnetic nanocomposite of Ru@Fe3O4/rGO was successfully synthesized by a simple hydro-thermal method. The Ru@Fe3O4/rGO particles were assembled and immobilized for innovative magnetically assembled electrode (MAE) without any binder, and the electrode was further applied in heterogeneous electro-Fenton (hetero-EF) process for the degradation of diclofenac (DCF). The results showed that rGO could remarkably enhance the conductivity and catalyze the two-electron oxygen reduction, which greatly improved the generation of H2O2. In addition, the mixture valence of Fe and Ru species might provide rich reaction sites and enhance electron transfer by synergy. Thus, the Ru@Fe3O4/rGO MAE exhibited a stable and high electrocatalytic activity in the hetero-EF process for DCF degradation over a wide pH range from 2 to 9 owing to the higher electroactive surface area (EASA) and lower charge/mass-transfer resistance. The DCF degradation efficiency could reach about 100% within 90 min under pH 5 and current 40 mA, and the Ru@Fe3O4/rGO MAE showed high stability and reusability after five cycles. Theoretically, 1O2 and •OH were the main reactive oxygen species (ROS) participating in DCF degradation in the Ru@Fe3O4/rGO MAE hetero-EF process. Furthermore, according to the LC-MS/MS intermediates, the possible DCF degradation pathway was deduced including dechlorination, hydroxylation and ring opening attacked by ROS. Eleven intermediates were detected during DCF degradation in the MAE hetero-EF process, and the ecological risk of DCF degradation in Ru@Fe3O4/rGO MAE hetero-EF process was significantly reduced. This study provides new insights into the magnetically assembled electrode of Ru@Fe3O4/rGO and displays a new practical application prospect of the materials for high-efficient removal and degradation of DCF from wastewater.
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Affiliation(s)
- Bing Qiu
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Xiaolan Zhou
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
| | - Weimin Li
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Houjuan Zhu
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Long Yu
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Chao Yuan
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Rongni Dou
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Mingtai Sun
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Suhua Wang
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
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Kumari M, Pulimi M. Phthalate esters: occurrence, toxicity, bioremediation, and advanced oxidation processes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2090-2115. [PMID: 37186617 PMCID: wst_2023_119 DOI: 10.2166/wst.2023.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Phthalic acid esters are emerging pollutants, commonly used as plasticizers that are categorized as hazardous endocrine-disrupting chemicals (EDCs). A rise in anthropogenic activities leads to an increase in phthalate concentration in the environment which leads to various adverse environmental effects and health issues in humans and other aquatic organisms. This paper gives an overview of the research related to phthalate ester contamination and degradation methods by conducting a bibliometric analysis with VOS Viewer. Ecotoxicity analysis requires an understanding of the current status of phthalate pollution, health impacts, exposure routes, and their sources. This review covers five toxic phthalates, occurrences in the aquatic environment, toxicity studies, biodegradation studies, and degradation pathways. It highlights the various advanced oxidation processes like photocatalysis, Fenton processes, ozonation, sonolysis, and modified AOPs used for phthalate removal from the environment.
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Affiliation(s)
- Madhu Kumari
- Centre of Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India E-mail:
| | - Mrudula Pulimi
- Centre of Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India E-mail:
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3
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Shi K, Wang Y, Xu A, Zhu H, Gu L, Liu X, Shen J, Han W, Wei K. Integrated electro-Fenton system based on embedded U-tube GDE for efficient degradation of ibuprofen. CHEMOSPHERE 2023; 311:137196. [PMID: 36370765 DOI: 10.1016/j.chemosphere.2022.137196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Ibuprofen (IBP) is a carcinogenic non-steroidal anti-inflammatory drug (NSAID). It is of certain hazard to aquatic animals and may cause potential harm to human health. As traditional methods cannot effectively remove such a pollutant, many advanced oxidation processes (AOPs) have been developed for its degradation. The electro-Fenton process has the advantages of strong oxidative ability, a synergistic effect of various degradation processes, and a wide application range. This study developed a high-performance gas diffusion electrode (GDE) for electrochemical hydrogen peroxide (H2O2) production. The optimum system performance was found at the current density of 10 mA cm-2, pH of 7.0, and air flow rate at 0.6 L min-1, where the accumulation of H2O2 could reach as high as 769.82 mg L-1. The computational fluid dynamics (CFD) simulation results revealed a fast mass-transfer property in this electro-Fenton system with U-tube GDEs, which resulted in a deep-level degradation (∼100%) of the pollutant (IBP) and a low-concentration degradation of 10 mg L-1 within a 120-min reaction period. The high-performance liquid chromatography-mass spectrometry (LC-MS) studies demonstrated that the hydroxyl radicals were the primary active species in the electro-Fenton system and that the degradation intermediates of IBP were mainly 1-(4-isobutylphenyl) ethanol and 2-hydroxy-2-(4-isobutyl phenyl) propanoic acid through four probable electro-Fenton degradation pathways. This report provides a facile and efficient way to construct a high-performance electro-Fenton reactor, which could be effectively used in advanced oxidation processes (AOPs) to remove emerging contaminants in wastewater and natural water.
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Affiliation(s)
- Kaiqiang Shi
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Yi Wang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Anlin Xu
- Nanjing Tech University, School of Environmental Science and Engineering, Nanjing 211816, Jiangsu, China.
| | - Hongwei Zhu
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Liankai Gu
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Xiaodong Liu
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Jinyou Shen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Kajia Wei
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China.
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Martynenko EA, Vostrikov SV, Shafigulin RV, Vinogradov KY, Tokranova EO, Bulanova AV, Zhu H. Palladium-containing catalysts based on mesostructured material of the cmk type in the reaction of oxygen electroreduction. J APPL ELECTROCHEM 2022. [DOI: 10.1007/s10800-022-01808-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Gao WW, Su T, Zhao W, Zhang ZF, Mu M, Song YH, Zhang XX, Liu XY. Efficient degradation of semi-coking wastewater in three-dimensional electro-Fenton by CuFe 2O 4 heterocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:74163-74172. [PMID: 35633458 DOI: 10.1007/s11356-022-21002-6] [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: 02/05/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Semi-coking wastewater contains a rich source of toxic and refractory compounds. Three-dimensional electro-Fenton (3D/EF) process used CuFe2O4 as heterocatalyst and activated carbon (AC) as particle electrode was constructed for degrading semi-coking wastewater greenly and efficiently. CuFe2O4 nanoparticles were prepared by coprecipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy disperse spectroscopy (EDS). Factors like dosage of CuFe2O4, applied voltage, dosage of AC and pH, which effect COD removal rate of semi-coking waste water were studied. The results showed that COD removal rate reached to 80.9% by 3D/EF process at the optimum condition: 4 V, 0.3 g of CuFe2O4, 1 g of AC and pH = 3. Trapping experiment suggesting that hydroxyl radical (•OH) is the main active radical. The surface composition and chemical states of the fresh and used CuFe2O4 were analyzed by XPS indicating that Fe, Cu, and O species are involved into the 3D/EF process. Additionally, anode oxidation and the adsorption and catalysis of AC are also contributed to the bleaching of semi-coking waste water. The possible mechanisms of 3D/EF for degrading semi-coking waste water by CuFe2O4 heterocatalyst were proposed.
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Affiliation(s)
- Wen-Wen Gao
- Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, China
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
| | - Ting Su
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
| | - Wei Zhao
- Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, China.
| | - Zhi-Fang Zhang
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
| | - Miao Mu
- Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, China
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
| | - Yong-Hui Song
- Key Laboratory of Gold and Resources of Shaanxi Province, School of Metallurgical Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, China
| | - Xue-Xue Zhang
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
| | - Xin-Yu Liu
- Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School Chemistry and Chemical Engineering, Yulin University, Yulin, 71900, Shannxi, China
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Muzenda C, Arotiba OA. Improved Magnetite Nanoparticle Immobilization on a Carbon Felt Cathode in the Heterogeneous Electro-Fenton Degradation of Aspirin in Wastewater. ACS OMEGA 2022; 7:19261-19269. [PMID: 35721921 PMCID: PMC9202057 DOI: 10.1021/acsomega.2c00627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/18/2022] [Indexed: 05/23/2023]
Abstract
Toward the improvement of the application of heterogeneous electro-Fenton in water treatment, we report a new strategy of enhancing the immobilization of a magnetite nanoparticle catalyst on a carbon felt cathode. Exploiting the intrinsic ferrimagnetic properties of magnetite nanoparticles, magnet bars were used to attach the magnetite into the void spaces of the porous carbon felt (CF) cathode. The magnetite nanoparticles were prepared by coprecipitation with variations in the molar ratios of Fe2+/Fe3+. The magnetite was characterized, attached onto the CF electrode with magnetic bars, and used in the heterogeneous electro-Fenton (EF) degradation of aspirin. The effects of the following on the degradation were studied: Fe2+/Fe3+, pH, catalyst loading concentration, and voltage. The heterogeneous EF degradation of aspirin in wastewater improved by 23% when magnetic bars were used to enhance the immobilization of the magnetite catalysts. The 1:4 Fe2+/Fe3+ ratio resulted in the highest hetero-EF catalytic degradation of aspirin with complete degradation (100%) achieved after 140 min. For a mixture of pharmaceuticals, degradation percentages of 94.3% (aspirin), 88% (ciprofloxacin), and 80% (paracetamol) in 3 h were obtained. The magnetized magnetite on the cathode was reusable for 10 cycles. Thus, the use of magnets shows a promising strategy to avoid the leaching of ferrimagnetic nanoparticle catalysts embedded in the cathode for heterogeneous EF processes.
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Affiliation(s)
- Charles Muzenda
- Department
of Chemical Sciences, University of Johannesburg, Johannesburg 2028, South Africa
| | - Omotayo A. Arotiba
- Department
of Chemical Sciences, University of Johannesburg, Johannesburg 2028, South Africa
- Centre
for Nanomaterials Science Research, University
of Johannesburg, Johannesburg 2028, South Africa
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7
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Taghipour T, Karimipour G, Ghaedi M, Asfaram A, Javadian H, Sabzehmeidani MM, Karimi H. Photoelectro-Fenton/photocatalytic process for decolorization of an organic compound by Ag:Cd-1,4-BDOAH2 nano-photocatalyst: Response surface modeling and central composite design optimization. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.113689] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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8
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Nair KM, Kumaravel V, Pillai SC. Carbonaceous cathode materials for electro-Fenton technology: Mechanism, kinetics, recent advances, opportunities and challenges. CHEMOSPHERE 2021; 269:129325. [PMID: 33385665 DOI: 10.1016/j.chemosphere.2020.129325] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/10/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Electro-Fenton (EF) technique has gained significant attention in recent years owing to its high efficiency and environmental compatibility for the degradation of organic pollutants and contaminants of emerging concern (CECs). The efficiency of an EF reaction relies primarily on the formation of hydrogen peroxide (H2O2) via 2e─ oxygen reduction reaction (ORR) and the generation of hydroxyl radicals (●OH). This could be achieved through an efficient cathode material which operates over a wide pH range (pH 3-9). Herein, the current progresses on the advancements of carbonaceous cathode materials for EF reactions are comprehensively reviewed. The insights of various materials such as, activated carbon fibres (ACFs), carbon/graphite felt (CF/GF), carbon nanotubes (CNTs), graphene, carbon aerogels (CAs), ordered mesoporous carbon (OMCs), etc. are discussed inclusively. Transition metals and hetero atoms were used as dopants to enhance the efficiency of homogeneous and heterogeneous EF reactions. Iron-functionalized cathodes widened the working pH window (pH 1-9) and limited the energy consumption. The mechanism, reactor configuration, and kinetic models, are explained. Techno economic analysis of the EF reaction revealed that the anode and the raw materials contributed significantly to the overall cost. It is concluded that most reactions follow pseudo-first order kinetics and rotating cathodes provide the best H2O2 production efficiency in lab scale. The challenges, future prospects and commercialization of EF reaction for wastewater treatment are also discussed.
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Affiliation(s)
- Keerthi M Nair
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland
| | - Vignesh Kumaravel
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland
| | - Suresh C Pillai
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland.
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9
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Dong P, Wang H, Liu W, Wang S, Wang Y, Zhang J, Lin F, Wang Y, Zhao C, Duan X, Wang S, Sun H. Quasi-MOF derivative-based electrode for efficient electro-Fenton oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123423. [PMID: 32763710 DOI: 10.1016/j.jhazmat.2020.123423] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/23/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
Developing efficient and robust materials for emerging electrodegradation of organic pollutants has attracted broad interests. In this study, a novel controlled pyrolysis approach was employed to fabricate a quasi-MOF derivative-based electrode by pyrolyzing MIL-101(Fe) anchored on a polyaniline-modified carbon fiber paper at 400 °C. The construction of the accessible Fe-O sites, and the in situ generation of Fe3O4 nanoparticles with graphene-like carbon layers coated, would enhance the electro-Fenton activity of the electrode, which was used as the cathode. The results showed that 100 % of 50 mg L-1 p-nitrophenol and 52 % total organic carbon were removed in 120 min under a current density of 5 mA cm-2, suggesting that the prepared electrode had a more efficient mineralization current efficiency and less energy consumption compared with electrodes before pyrolysis. Notably, the stability of the electrode was greatly improved, maintaining its outstanding performance even after ten runs. The plausible reaction mechanism and degradation pathway were also proposed. This new pyrolysis strategy is expected to serve as a paradigm for designing efficient electrode in electro-Fenton remediation field.
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Affiliation(s)
- Pei Dong
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Haolong Wang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Wenjing Liu
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Shuaijun Wang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China; School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Yang Wang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Jinqiang Zhang
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Feifei Lin
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Yongqiang Wang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Chaocheng Zhao
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao 266580, PR China.
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hongqi Sun
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia.
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Cheng S, Mao Z, Sun Y, Yang J, Yu Z, Gu R. A novel electrochemical oxidation-methanogenesis system for simultaneously degrading antibiotics and reducing CO 2 to CH 4 with low energy costs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 750:141732. [PMID: 32882500 DOI: 10.1016/j.scitotenv.2020.141732] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/22/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
A novel electrochemical oxidation-methanogenesis (EO-M) system was proposed for the first time to simultaneously achieve antibiotic degradation and a bioelectrochemical conversion of CO2 to CH4 with low energy costs. A dual-chamber system was installed with an antimony-doped tin oxide anode (Ti/SnO2-Sb) for the electrocatalytic generation of hydroxyl radicals to degrade ciprofloxacin (CIP), and a CO2-reducing methanogenic biocathode was enriched based on a three-dimensional (3D) graphitized granular activated carbon (GGAC) for microbial electromethanogenesis. The anode achieved removal efficiencies as high as 99.99% and 90.53% for CIP (14 mL, 50 mg L-1) and the chemical oxygen demand (COD, 89 mg L-1), respectively. The biocathode was rapidly enriched within 15 days and exhibited a methane production rate that stabilized at 15.12 ± 1.82 m3 m-3 d-1; additionally, the cathodic coulombic efficiency reached 71.76 ± 17.24%. The energy consumption of CIP degradation was reduced by 3.03 Wh L-1 compared to that of a single electrochemical oxidation system due to the lower cathodic overpotential of CO2 bioelectrochemical reduction in the EO-M system. A detailed analysis of the biofilm evolution in the 3D biocathode during the start-up process demonstrated that the enhanced absorption of extracellular polymeric substances by the GGAC cathode accelerated the enrichment of methanogens and induced the formation of methanogens with a large number of flagella. An analysis of the microbial community showed that a high relative abundance of Methanobacterium movens could promote a flagella-mediated direct electron transfer of the biocathode, eventually reducing the cathodic overpotential and energy costs of the EO-M system.
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Affiliation(s)
- Shaoan Cheng
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Zhengzhong Mao
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Yi Sun
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Jiawei Yang
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Zhen Yu
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Ruonan Gu
- State Key Laboratory of Clean Energy, College of Energy Engineering, Zhejiang University, Hangzhou 310027, PR China
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11
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Jiao Y, Ma L, Tian Y, Zhou M. A flow-through electro-Fenton process using modified activated carbon fiber cathode for orange II removal. CHEMOSPHERE 2020; 252:126483. [PMID: 32197180 DOI: 10.1016/j.chemosphere.2020.126483] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 03/01/2020] [Accepted: 03/12/2020] [Indexed: 05/03/2023]
Abstract
This study investigated the removal of Orange II by an electro-Fenton process using a novel recirculation flow-through reactor. The hydrogen peroxide was generated in-situ on the activated carbon fiber (ACF) modified with carbon black and polytetrafluoroethylene (PTFE). The modified ACF cathode was characterized by scanning electron microscopy (SEM) and nitrogen adsorption-desorption study. In light of the production of H2O2 and removal of Orange II, the optimum weight percentage of PTFE in the mixture of carbon black and PTFE was 75%. The effects of some important operating parameters such as current and flow rate were investigated. The best Orange II removal reached 96.7% with mineralization efficiency of 55.4% at 120 min under the current of 100 mA, initial pH 3, Fe2+ 0.3 mM and the flow rate of 7 mL min-1. The cathode exhibited good regeneration ability and stability. OH was proved to be the main oxidizing species in this flow-through electro-Fenton system. This work demonstrated that such electro-Fenton process using modified ACF cathode was promising for the degradation of organic pollutants.
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Affiliation(s)
- Yongli Jiao
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Liang Ma
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yusi Tian
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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12
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Ranjbar M, Majidian N, Samipourgiri M. Heterogeneous Electro-Fenton Process by MWCNT-Ce/WO3 Nanocomposite Modified GF Cathode for Catalytic Degradation of BTEX: Process Optimization Using Response Surface Methodology. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-019-00550-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Li J, Jin Y, Chen M, Li J. A novel green and safe dearsenization of white phosphorus by selective electrocatalytic oxidation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Xiao Y, Hill JM. Benefit of Hydrophilicity for Adsorption of Methyl Orange and Electro-Fenton Regeneration of Activated Carbon-Polytetrafluoroethylene Electrodes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11760-11768. [PMID: 30203969 DOI: 10.1021/acs.est.8b03409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Activated carbon (AC)-polytetrafluoroethylene (PTFE) electrodes were prepared and applied for methyl orange (MO) adsorption and electro-Fenton regeneration. The addition of PTFE to AC significantly decreased the hydrophilicity, which in turn, decreased both the amount of MO adsorbed and the regeneration efficiency. With the minimum amount of binder (a 7:1 mass ratio of AC to binder), the MO adsorption was 176 mg g-1. The amount adsorbed decreased to 23 mg g-1 for the electrode with a 1:1 mass ratio of AC to binder. For these ratios, the regeneration efficiencies were 81% and 49%, respectively. The adsorption kinetics were well fit by a Weber-Morris model. The diffusion rate constants obtained from this model were linearly related to the hydrophilicity of the electrode, i.e., the higher the hydrophilicity the higher the adsorption rate. Based on the results, an adsorption capacity >50 mg g-1 in 8 h with a regeneration efficiency of >70% at cathodic potential of -0.8 V (vs Ag/AgCl) can be obtained if the contact angle of water on the electrodes is lower than 90°.
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Affiliation(s)
- Ye Xiao
- Department of Chemical & Petroleum Engineering, Schulich School of Engineering , University of Calgary , 2500 University Drive NW , Calgary , Alberta T2N 1N4 , Canada
| | - Josephine M Hill
- Department of Chemical & Petroleum Engineering, Schulich School of Engineering , University of Calgary , 2500 University Drive NW , Calgary , Alberta T2N 1N4 , Canada
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Ren W, Tang D, Huang M, Sun J, Lv K. Remarkable improved electro-Fenton efficiency by electric-field-induced catalysis of CeO 2. JOURNAL OF HAZARDOUS MATERIALS 2018; 350:88-97. [PMID: 29454800 DOI: 10.1016/j.jhazmat.2018.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 12/19/2017] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
In this study, we designed a novel combined electro-Fenton system for the treatment of wastewater containing biological recalcitrant using electric-field-induced ceria (CeO2) as the synergistic catalysts. It was found that by applying this CeO2 electro-Fenton system, the current efficiency improved from 74.49% to 109.82% within 2.5 min; the removal efficiency for dimethyl phthalate (DMP) increased from 85.5% to 94.9% within 20 min; and the mineralization rate increased from 76.01% to 93.58% after 120 min. The effects of parameters such as the applied potential, electrolyte, and concentration of Fe2+ on the current efficiency were systematically studied. Investigations by LSV, zeta titration, X-ray photoelectron spectroscopy (XPS), X-Ray Diffraction (XRD)and electron spin resonance (ESR)revealed the reasons for achieving a current efficiency of over 100% in the CeO2 electro-Fenton system. A mechanism that involved Brønsted acid sites and the redox cycle of sulfate CeO2 was proposed.
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Affiliation(s)
- Wei Ren
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Diyong Tang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Meiyu Huang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Jie Sun
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.
| | - Kangle Lv
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China
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Garza-Campos B, Morales-Acosta D, Hernández-Ramírez A, Guzmán-Mar J, Hinojosa-Reyes L, Manríquez J, Ruiz-Ruiz E. Air diffusion electrodes based on synthetized mesoporous carbon for application in amoxicillin degradation by electro-Fenton and solar photo electro-Fenton. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.02.139] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Xu J, Lu S, Chen X, Wang J, Zhang B, Zhang X, Xiao C, Ding S. A high-performance mesoporous carbon supported nitrogen-doped carbon electrocatalyst for oxygen reduction reaction. NANOTECHNOLOGY 2017; 28:485701. [PMID: 29039353 DOI: 10.1088/1361-6528/aa9406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Investigating low-cost and highly active electrocatalysts for oxygen reduction reactions (ORR) is of crucial importance for energy conversion and storage devices. Herein, we design and prepare mesoporous carbon supported nitrogen-doped carbon by pyrolysis of polyaniline coated on CMK-3. This electrocatalyst exhibits excellent performance towards ORR in alkaline media. The optimized nitrogen-doped mesoporous electrocatalyst show an onset potential (E onset) of 0.95 V (versus reversible hydrogen electrode (RHE)) and half-wave potential (E 1/2) of 0.83 V (versus RHE) in 0.1 M KOH. Furthermore, the as-prepared catalyst presents superior durability and methanol tolerance compared to commercial Pt/C indicating its potential applications in fuel cells and metal-air batteries.
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Affiliation(s)
- Jingjing Xu
- Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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Lu Y, Liu G, Luo H, Zhang R. Efficient in-situ production of hydrogen peroxide using a novel stacked electrosynthesis reactor. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.07.085] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ren W, Tang D, Lu X, Sun J, Li M, Qiu S, Fan D. Novel Multilayer ACF@rGO@OMC Cathode Composite with Enhanced Activity for Electro-Fenton Degradation of Phthalic Acid Esters. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02896] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Ren
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
| | - Diyong Tang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
| | - Xiaoshuang Lu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
| | - Jie Sun
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
| | - Mei Li
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Shou Qiu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
| | - Dingjin Fan
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Department of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
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Xiao J, Wang C, Lyu S, Liu H, Jiang C, Lei Y. Enhancement of Fenton degradation by catechol in a wide initial pH range. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.04.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Liu T, Wang K, Song S, Brouzgou A, Tsiakaras P, Wang Y. New Electro-Fenton Gas Diffusion Cathode based on Nitrogen-doped Graphene@Carbon Nanotube Composite Materials. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.185] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Ren W, Peng Q, Huang Z, Zhang Z, Zhan W, Lv K, Sun J. Effect of Pore Structure on the Electro-Fenton Activity of ACF@OMC Cathode. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02139] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Ren
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Qiaoli Peng
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Ze’ai Huang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Zehui Zhang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Wei Zhan
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Kangle Lv
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Jie Sun
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
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Duan F, Li Y, Cao H, Wang Y, Crittenden JC, Zhang Y. Activated carbon electrodes: electrochemical oxidation coupled with desalination for wastewater treatment. CHEMOSPHERE 2015; 125:205-211. [PMID: 25585871 DOI: 10.1016/j.chemosphere.2014.12.065] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 06/04/2023]
Abstract
The wastewater usually contains low-concentration organic pollutants and some inorganic salts after biological treatment. In the present work, the possibility of simultaneous removal of them by combining electrochemical oxidation and electrosorption was investigated. Phenol and sodium chloride were chosen as representative of organic pollutants and inorganic salts and a pair of activated carbon plate electrodes were used as anode and cathode. Some important working conditions such as oxygen concentration, applied potential and temperature were evaluated to reach both efficient phenol removal and desalination. Under optimized 2.0 V of applied potential, 38°C of temperature, and 500 mL min(-1) of oxygen flow, over 90% of phenol, 60% of TOC and 20% of salinity were removed during 300 min of electrolysis time. Phenol was removed by both adsorption and electrochemical oxidation, which may proceed directly or indirectly by chlorine and hypochlorite oxidation. Chlorophenols were detected as degradation intermediates, but they were finally transformed to carboxylic acids. Desalination was possibly attributed to electrosorption of ions in the pores of activated carbon electrodes. The charging/regeneration cycling experiment showed good stability of the electrodes. This provides a new strategy for wastewater treatment and recycling.
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Affiliation(s)
- Feng Duan
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuping Li
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Hongbin Cao
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yi Wang
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - John C Crittenden
- Brook Byers Institute for Sustainable Systems, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Yi Zhang
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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Sheng Y, Zhao Y, Wang X, Wang R, Tang T. Electrogeneration of H2O2 on a composite acetylene black–PTFE cathode consisting of a sheet active core and a dampproof coating. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.071] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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