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Peng Y, Yan Y, Ma X, Jiang B, Chen R, Feng H, Xia Y. Efficient electrochemical oxidation of antibiotic wastewater using a graphene-loaded PbO 2 membrane anode: Mechanisms and applications. ENVIRONMENTAL RESEARCH 2024; 259:119517. [PMID: 38964585 DOI: 10.1016/j.envres.2024.119517] [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: 05/23/2024] [Revised: 06/14/2024] [Accepted: 06/29/2024] [Indexed: 07/06/2024]
Abstract
This paper aims to develop a flow-through electrochemical system with a series of graphene nanoparticles loaded PbO2 reactive electrochemical membrane electrodes (GNPs-PbO2 REMs) on porous Ti substrates with pore sizes of 100, 150, 300 and 600 μm, and apply them to treat antibiotic wastewater. Among them, the GNPs-PbO2 with Ti substrate of 150 μm (Ti-150/GNPs-PbO2) had superior electrochemical degradation performance over the REMs with other pore sizes due to its smaller crystal size, larger electrochemical active specific area, lower charge-transfer impedance and larger oxygen evolution potential. Under the relatively optimized conditions of initial pH of 5, current density of 15 mA cm-2, and membrane flux of 4.20 m3 (m2·h)-1, the Ti-150/GNPs-PbO2 REM realized 99.34% of benzylpenicillin sodium (PNG) removal with an EE/O of 6.52 kWh m-3. Its excellent performance could be explained as the increased mass transfer. Then three plausible PNG degradation pathways in the flow-through electrochemical system were proposed, and great stability and safety of Ti-150/GNPs-PbO2 REM were demonstrated. Moreover, a single-pass Ti-150/GNPs-PbO2 REM system with five-modules in series was designed, which could consistently treat real antibiotic wastewater in compliance with disposal requirements of China. Thus, this study evidenced that the flow-through electrochemical system with the Ti-150/GNPs-PbO2 REM is an efficient alternative for treating antibiotic wastewater.
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Affiliation(s)
- Yifei Peng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yan Yan
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Xiangjuan Ma
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Bowen Jiang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Ruya Chen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Huajun Feng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; College of Environment and Resources, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Yijing Xia
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
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Zeng Y, Dai Y, Yin L, Huang J, Hoffmann MR. Rethinking alternatives to fluorinated pops in aqueous environment and corresponding destructive treatment strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174200. [PMID: 38936705 DOI: 10.1016/j.scitotenv.2024.174200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 05/25/2024] [Accepted: 06/20/2024] [Indexed: 06/29/2024]
Abstract
Alternatives are being developed to replace fluorinated persistent organic pollutants (POPs) listed in the Stockholm Convention, bypass environmental regulations, and overcome environmental risks. However, the extensive usage of fluorinated POPs alternatives has revealed potential risks such as high exposure levels, long-range transport properties, and physiological toxicity. Therefore, it is imperative to rethink the alternatives and their treatment technologies. This review aims to consider the existing destructive technologies for completely eliminating fluorinated POPs alternatives from the earth based on the updated classification and risks overview. Herein, the types of common alternatives were renewed and categorized, and their risks to the environment and organisms were concluded. The efficiency, effectiveness, energy utilization, sustainability, and cost of various degradation technologies in the treatment of fluorinated POPs alternatives were reviewed and evaluated. Meanwhile, the reaction mechanisms of different fluorinated POPs alternatives are systematically generalized, and the correlation between the structure of alternatives and the degradation characteristics was discussed, providing mechanistic insights for their removal from the environment. Overall, the review supplies a theoretical foundation and reference for the control and treatment of fluorinated POPs alternatives pollution.
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Affiliation(s)
- Yuxin Zeng
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
| | - Yunrong Dai
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, PR China.
| | - Lifeng Yin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
| | - Jun Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control (BKLEOC), School of Environment, POPs Research Center, Tsinghua University, Beijing 100084, PR China.
| | - Michael R Hoffmann
- Department of Environmental Science & Engineering, California Institute of Technology, Pasadena, CA 91125, United States.
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Chi H, Ma J, Duan R, Wang A, Qiao Y, Wang W, Li C. Modulating crystal facets of photoanodes for photoelectrocatalytic scalable degradation of fluorinated pharmaceuticals in wastewater. WATER RESEARCH 2024; 262:122101. [PMID: 39032329 DOI: 10.1016/j.watres.2024.122101] [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: 02/28/2024] [Revised: 05/17/2024] [Accepted: 07/13/2024] [Indexed: 07/23/2024]
Abstract
Fluorinated pharmaceuticals pollution has become an ever-increasing environmental concern due to its negative impacts. Photoelectrocatalytic (PEC) degradation system is a desirable approach to tackle the pollution problems. However, photogenerated charge separation and interfacial mass transfer are the main bottlenecks for improving the PEC degradation performance. Herein, we report a TiO2 photoanode with tuned (101)/(110) facets in situ grown on a Ti mesh substrate for PEC degradation of fluorinated pharmaceuticals. The exposure of (101) facets facilitates efficient photogenerated charge separation and the desorption of generated •OH radical. Besides, the three-dimensional (3D) architecture of photoanode promotes macroscopic mass transfer. This system performed complete defluorination of 5-fluorouracil and more than 75 % total organic carbon (TOC) removal efficiency. The apparent reaction rate constant of high (101) facet-exposed TiO2 grown on Ti mesh is up to 6.96 h-1, 6‒fold faster than that of photoanode with low (101) facet-exposed TiO2 grown on Ti foil. It is demonstrated that a large-sized PEC system of 1200 cm2 can degrade 100 L of synthetic fluorinated pharmaceutical wastewater with more than 80 % elimination efficiency. This work showcases the facet and substrate modulated strategy of fabricating high-performed photoanode for PEC wastewater purification.
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Affiliation(s)
- Haibo Chi
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiangping Ma
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; Key Laboratory of advanced catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Ruizhi Duan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; Key Laboratory of advanced catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Aoqi Wang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yafei Qiao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wangyin Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Can Li
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; Key Laboratory of advanced catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Kamenická B, Kuchtová G. Critical review on electrooxidation and chemical reduction of azo dyes: Economic approach. CHEMOSPHERE 2024; 363:142799. [PMID: 38986779 DOI: 10.1016/j.chemosphere.2024.142799] [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: 05/06/2024] [Revised: 07/01/2024] [Accepted: 07/06/2024] [Indexed: 07/12/2024]
Abstract
Effective degradation technologies have been extensively investigated and used to remove azo dyes from wastewater for decades. However, no review dealing with both electrooxidation and chemical reduction of azo dyes from an economic and, therefore, application-relevant perspective has been found in the current literature. A novelty of this review article consists not only in the brief summarization and comparison of both methods but mainly in the evaluation of their economic side. Based on the literature survey of the last 15 years, the costs of treatment approaches published in individual research articles have been summarized, and the missing data have been calculated. A broad spectrum of advanced electrode materials and catalysts have been developed and tested for the treatment, specifically aiming to enhance the degradation performance. An outline of the global prices of electrode materials, reducing agents, and basic chemicals is involved. All additional costs are described in depth in this review. The advantages and disadvantages of respective methods are discussed. It was revealed that effective and cheap treatment approaches can be found even in advanced degradation methods. Based on the collected data, electrooxidation methods offer, on average, 30 times cheaper treatment of aqueous solutions. Concerning chemical reduction, only ZVI provided high removal of azo dyes at prices <100 $ per kg of azo dye. The factors affecting total prices should also be considered. Therefore, the basic diagram of the decision-making process is proposed. In the conclusion, challenges, future perspectives, and critical findings are described.
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Affiliation(s)
- Barbora Kamenická
- Institute of Environmental and Chemical Engineering, University of Pardubice, Studentská 573, 532 10, Pardubice, Czech Republic
| | - Gabriela Kuchtová
- Institute of Environmental and Chemical Engineering, University of Pardubice, Studentská 573, 532 10, Pardubice, Czech Republic.
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Zhang Y, Zuo S, Zheng Q, Yu G, Wang Y. Removal of antibiotic resistant bacteria and antibiotic resistance genes by an electrochemically driven UV/chlorine process for decentralized water treatment. WATER RESEARCH 2024; 265:122298. [PMID: 39173362 DOI: 10.1016/j.watres.2024.122298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/03/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024]
Abstract
The UV/chlorine (UV/Cl2) process is a developing advanced oxidation process and can efficiently remove antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs). However, the transportation and storage of chlorine solutions limit the application of the UV/Cl2 process, especially for decentralized water treatment. To overcome the limitation, an electrochemically driven UV/Cl2 process (E-UV/Cl2) where Cl2 can be electrochemically produced in situ from anodic oxidation of chloride (Cl-) ubiquitously present in various water matrices was evaluated in this study. >5-log inactivation of the ARB (E. coli) was achieved within 5 s of the E-UV/Cl2 process, and no photoreactivation of the ARB was observed after the treatment. In addition to the ARB, intracellular and extracellular ARGs (tetA, sul1, sul2, and ermB) could be effectively degraded (e.g., log(C0/C) > 4 for i-ARGs) within 5 min of the E-UV/Cl2 process. Atomic force microscopy showed that the most of the i-ARGs were interrupted into short fragments (< 30 nm) during the E-UV/Cl2 process, which can thus effectively prevent the self-repair of i-ARGs and the horizontal gene transfer. Modelling results showed that the abatement efficiencies of i-ARG correlated positively with the exposures of •OH, Cl2-•, and ClO• during the E-UV/Cl2 process. Due to the short treatment time (5 min) required for ARB and ARG removal, insignificant concentrations of trihalomethanes (THMs) were generated during of the E-UV/Cl2 process, and the energy consumption (EEO) of ARG removal was ∼0.20‒0.27 kWh/m3-log, which is generally comparable to that of the UV/Cl2 process (0.18-0.23 kWh/m3-log). These results demonstrate that the E-UV/Cl2 process can provide a feasible and attractive alternative to the UV/Cl2 process for ARB and ARG removal in decentralized water treatment system.
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Affiliation(s)
- Yinqiao Zhang
- State of Key Laboratory of Natural Medicines, School of Engineering, China Pharmaceutical University, Nanjing 211198, China; School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Sijin Zuo
- State of Key Laboratory of Natural Medicines, School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Quan Zheng
- China State Construction Hailong Technology Company Ltd., Shenzhen 518045, China
| | - Gang Yu
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai 519087, China
| | - Yujue Wang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing 100084, China.
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Godoy Pérez M, Silva CCG, Espinoza LC, Boldrin Zanoni MV, Bollo Dragnic S, Salazar-González R. Assessment of Ti, Ir, Ta and Ru influence on mixed metal oxide electrodes for photoelectrochemical generation of persulfate: Impact on sulfamethoxazole degradation. CHEMOSPHERE 2024; 364:143049. [PMID: 39146984 DOI: 10.1016/j.chemosphere.2024.143049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/27/2024] [Accepted: 08/06/2024] [Indexed: 08/17/2024]
Abstract
The presence of persulfate (S2O82-) in decontamination processes favors the oxidation of organic pollutants due to its strong oxidation power. In this research we study the photoelectrochemical generation of persulfate using five mixed metal oxides electrodes (MMO) with different compositions and its effect on the degradation of sulfamethoxazole antibiotic (SMX) by photoelectrocatalysis (PEC) and electro-oxidation (EO). By PEC, all anodes generated a higher concentration of S2O82- than those not exposed to light. The high S2O82-concentration obtained by PEC was 0.150 mM using MMO[Ti/Ir/Ta] in a solution with Na2SO4 100 mM applying a current density of 2 mA/cm2. On the other hand, the maximum concentration obtained was 0.250 mM at 30 min of electrolysis for MMO[Ti/Ir/Ta] using Na2SO4 50 mM and applying current density of 5 mA/cm2. S2O82-production by EO was between 0.005 and 0.089 mM. It is observed that MMO based in Ta2O5 showed the best S2O82- production. The effect of S2O82- electro-generation (using the anode with the highest and the anode with the lowest S2O82- production) on the degradation of sulfamethoxazole by PEC and EO was studied using the experimental conditions with the best production of this oxidant. MMO[Ti/Ir/Ta] and MMO[Ti/Ru] were used as anodes, and it was observed that by PEC, 100% of SMX was degraded after 30 min of electrolysis using MMO[Ti/Ir/Ta] and 60 min using MMO[Ti/Ru]. By EO, the degradation of SMX was partial, demonstrating that the electrophotocatalytic effect favors the generation of S2O82-, enhancing the degradation of SMX at short electrolysis times.
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Affiliation(s)
- Mariel Godoy Pérez
- Grupo de investigación de análisis, tratamiento, electroquímica, recuperación y reúso de agua, WATER(2). Departamento de química inorgánica, Facultad de química y Farmacia, Pontificia Universidad Católica de Chile (PUC), Chile; Centro de Investigación de Procesos Redox, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile (Uch), Santiago, Chile; Departamento de Química de los Materiales, Facultad de Química y Biología. Universidad de Santiago de Chile (USACH), Santiago, Chile.
| | - Caio C G Silva
- Instituto de Química, Universidade Estadual Paulista (UNESP), Rua Professor Francisco Degni, 55, Araraquara, 14800-060, São Paulo, Brazil
| | - L Carolina Espinoza
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Chile; Escuela de Ingeniería en Medio Ambiente y Sustentabilidad, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Chile
| | - Maria Valnice Boldrin Zanoni
- Instituto de Química, Universidade Estadual Paulista (UNESP), Rua Professor Francisco Degni, 55, Araraquara, 14800-060, São Paulo, Brazil
| | - Soledad Bollo Dragnic
- Centro de Investigación de Procesos Redox, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile (Uch), Santiago, Chile
| | - Ricardo Salazar-González
- Departamento de Química de los Materiales, Facultad de Química y Biología. Universidad de Santiago de Chile (USACH), Santiago, Chile.
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7
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Bayode AA, Emmanuel SS, Akinyemi AO, Ore OT, Akpotu SO, Koko DT, Momodu DE, López-Maldonado EA. Innovative techniques for combating a common enemy forever chemicals: A comprehensive approach to mitigating per- and polyfluoroalkyl substances (PFAS) contamination. ENVIRONMENTAL RESEARCH 2024; 261:119719. [PMID: 39098711 DOI: 10.1016/j.envres.2024.119719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/24/2024] [Accepted: 07/31/2024] [Indexed: 08/06/2024]
Abstract
The pervasive presence of per and polyfluoroalkyl substances (PFAS), commonly referred to as "forever chemicals," in water systems poses a significant threat to both the environment and public health. PFAS are persistent organic pollutants that are incredibly resistant to degradation and have a tendency to accumulate in the environment, resulting in long-term contamination issues. This comprehensive review delves into the primary impacts of PFAS on both the environment and human health while also delving into advanced techniques aimed at addressing these concerns. The focus is on exploring the efficacy, practicality, and sustainability of these methods. The review outlines several key methods, such as advanced oxidation processes, novel materials adsorption, bioremediation, membrane filtration, and in-situ chemical oxidation, and evaluates their effectiveness in addressing PFAS contamination. By conducting a comparative analysis of these techniques, the study aims to provide a thorough understanding of current PFAS remediation technologies, as well as offer insights into integrated approaches for managing these persistent pollutants effectively. While acknowledging the high efficiency of adsorption and membrane filtration in reducing persistent organic pollutants due to their relatively low cost, versatility, and wide applicability, the review suggests that the integration of these methods could result in an overall enhancement of removal performance. Additionally, the study emphasizes the need for researcher attention in key areas and underscores the necessity of collaboration between researchers, industry, and regulatory authorities to address this complex challenge.
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Affiliation(s)
- Ajibola A Bayode
- College of Chemical Engineering, Sichuan University of Science and Engineering, Zigong, 643000, China; Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, P.M.B. 230, 232101, Ede, Nigeria.
| | - Stephen Sunday Emmanuel
- Department of Industrial Chemistry, Faculty of Physical Sciences, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria.
| | - Amos O Akinyemi
- Department of Toxicology & Cancer Biology, University of Kentucky, Lexington, KY, 40536, USA
| | - Odunayo T Ore
- Department of Chemical Sciences, Achievers University, P.M.B. 1030, Owo, Nigeria
| | - Samson O Akpotu
- Department of Chemistry, Vaal University of Technology, Vanderbijlpark, 1900, Gauteng, South Africa
| | - Daniel T Koko
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, P.M.B. 230, 232101, Ede, Nigeria
| | - David E Momodu
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, P.M.B. 230, 232101, Ede, Nigeria
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Xia C, Shen X. Analysis of factors influencing on Electro-Fenton and research on combination technology (II): a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:46910-46948. [PMID: 38995339 DOI: 10.1007/s11356-024-34159-z] [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: 10/27/2023] [Accepted: 06/24/2024] [Indexed: 07/13/2024]
Abstract
The principle of Fenton reagent is to produce ·OH by mixing H2O2 and Fe2+ to realize the oxidation of organic pollutants, although Fenton reagent has the advantages of non-toxicity and short reaction time, but there are its related defects. The Fenton-like technology has been widely studied because of its various forms and better results than the traditional Fenton technology in terms of pollutant degradation efficiency. This paper reviews the electro-Fenton technology among the Fenton-like technologies and provides an overview of the homogeneous electro-Fenton. It also focuses on summarizing the effects of factors such as H2O2, reactant concentration, reactor volume and electrode quality, reaction time and voltage (potential) on the efficiency of electro-Fenton process. It is shown that appropriate enhancement of H2O2 concentration, voltage (potential) and reaction volume can help to improve the process efficiency; the process efficiency also can be improved by increasing the reaction time and electrode quality. Feeding modes of H2O2 have different effects on process efficiency. Finally, a considerable number of experimental studies have shown that the combination of electro-Fenton with ultrasound, anodic oxidation and electrocoagulation technologies is superior to the single electro-Fenton process in terms of pollutant degradation.
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Affiliation(s)
- Chongjie Xia
- School of Environmental and Chemical Engineering, Shenyang University of Technology, 110870, Shenyang, People's Republic of China
| | - Xinjun Shen
- School of Environmental and Chemical Engineering, Shenyang University of Technology, 110870, Shenyang, People's Republic of China.
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Qi Y, Li D, Zhang S, Li F, Hua T. Electrochemical filtration for drinking water purification: A review on membrane materials, mechanisms and roles. J Environ Sci (China) 2024; 141:102-128. [PMID: 38408813 DOI: 10.1016/j.jes.2023.06.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/18/2023] [Accepted: 06/26/2023] [Indexed: 02/28/2024]
Abstract
Electrochemical filtration can not only enrich low concentrations of pollutants but also produce reactive oxygen species to interact with toxic pollutants with the assistance of a power supply, making it an effective strategy for drinking water purification. In addition, the application of electrochemical filtration facilitates the reduction of pretreatment procedures and the use of chemicals, which has outstanding potential for maximizing process simplicity and reducing operating costs, enabling the production of safe drinking water in smaller installations. In recent years, the research on electrochemical filtration has gradually increased, but there has been a lack of attention on its application in the removal of low concentrations of pollutants from low conductivity water. In this review, membrane substrates and electrocatalysts used to improve the performance of electrochemical membranes are briefly summarized. Meanwhile, the application prospects of emerging single-atom catalysts in electrochemical filtration are also presented. Thereafter, several electrochemical advanced oxidation processes coupled with membrane filtration are described, and the related working mechanisms and their advantages and shortcomings used in drinking water purification are illustrated. Finally, the roles of electrochemical filtration in drinking water purification are presented, and the main problems and future perspectives of electrochemical filtration in the removal of low concentration pollutants are discussed.
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Affiliation(s)
- Yuying Qi
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Donghao Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Shixuan Zhang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Fengxiang Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
| | - Tao Hua
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
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Zhang Y, Li B, Zhang W, Guo X, Zhu L, Cao L, Yang J. Electro-oxidation of ammonia nitrogen using W, Ti-doped IrO 2 DSA as a treatment method for mariculture and livestock wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:44385-44400. [PMID: 38954330 DOI: 10.1007/s11356-024-34160-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Animal farming wastewater is one of the most important sources of ammonia nitrogen (NH4+-N) emissions. Electro-oxidation can be a viable solution for removing NH4+-N in wastewater. Compared with other treatment methods, electro-oxidation has the advantages of i) high removal efficiency, ii) smaller size of treatment facilities, and iii) complete removal of contaminant. In this study, a previously prepared DSA (W, Ti-doped IrO2) was used for electro-oxidation of synthetic mariculture and livestock wastewater. The DSA was tested for chlorine evolution reaction (CER) activity, and the reaction kinetics was investigated. CER current efficiency reaches 60-80% in mariculture wastewater and less than 20% in livestock wastewater. In the absence of NH4+-N, the generation of active chlorine follows zero-order kinetics and its consumption follows first-order kinetics, with cathodic reduction being its main consumption pathway, rather than escape or conversion to ClO3-. Cyclic voltammetry experiments show that NH4+-N in the form of NH3 can be oxidized directly on the anode surface. In addition, the generated active chlorine combines with NH4+-N at a fast rate near the anode, rather than in the bulk solution. In electrolysis experiments, the NH4+-N removal rate in synthetic mariculture wastewater (30-40 mg/L NH4+-N) and livestock wastewater (~ 450 mg/L NH4+-N) is 112.9 g NH4+-N/(m2·d) and 186.5 g NH4+-N/(m2·d), respectively, which is much more efficient than biological treatment. The specific energy consumption (SEC) in synthetic mariculture wastewater is 31.5 kWh/kg NH4+-N, comparable to other modified electro-catalysts reported in the literature. However, in synthetic livestock wastewater, the SEC is as high as 260 kWh/kg NH4+-N, mainly due to the suppression of active chlorine generation by HCO3- and the generation of NO3- as a by-product. Therefore, we conclude that electro-oxidation is suitable for mariculture wastewater treatment, but is not recommended for livestock wastewater. Electrolysis prior to urea hydrolysis may enhance the treatment efficiency in livestock wastewater.
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Affiliation(s)
- Yiheng Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
| | - Binbin Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
| | - Wenjing Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
| | - Xin Guo
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
| | - Lin Zhu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
| | - Limei Cao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, P.R. China
| | - Ji Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, P.R. China.
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11
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Tan Y, Xiao Y, Hao T. Carbon fixation via volatile fatty acids recovery from sewage sludge through electrochemical-pretreatment-based anaerobic digestion. WATER RESEARCH 2024; 258:121736. [PMID: 38754300 DOI: 10.1016/j.watres.2024.121736] [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: 03/12/2024] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/18/2024]
Abstract
Capturing the carbon in volatile fatty acids (VFA) produced from the anaerobic digestion (AD) of sewage sludge has the potential to not only provide economic benefits but also reduce greenhouse gas production. This study demonstrates a chemical-free method to collect VFA from an AD instead of methane that involves electrochemical pretreatment (EPT) of sludge. Experimental results show that applying 15 V EPT for 45 min enhances acidogenesis and selectively inhibits methanogenesis, leading to a substantial VFA accumulation (2563.1 ± 307.9 mg COD/L) and achieving 2.5 times more carbon fixation than via methane production. Interfacial thermodynamic analysis shows that EPT induces a decrease in both the repulsive electrostatic energy (from 152.9 kT to 12.2 kT) and the energy barrier (from 57.0 kT to 2.6 kT) in the sludge, leading to increased sludge aggregation and entrapment of microorganisms. Molecular docking sheds lights on how the methanogens interacts with the organic matter released from EPT (e.g., alanine-tRNA ligase), showing that these interactions potentially interfere with the proteins that are associated with the activities of the methanogens and the electron transfer pathways, thereby impeding methanogenesis. Integrating EPT into AD therefore facilitates the recovery of valuable VFA and the capture of carbon from freshwater sludge, providing notable economic and environmental benefits in sewage sludge treatment.
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Affiliation(s)
- Yunkai Tan
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, PR China
| | - Yihang Xiao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, PR China
| | - Tianwei Hao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, PR China.
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12
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Caglak A, Sari-Erkan H, Onkal Engin G. Chemical oxygen demand and tannin/lignin removal from paper mill wastewater by electrocoagulation combined with peroxide and hypochlorite treatments. ENVIRONMENTAL TECHNOLOGY 2024; 45:3076-3094. [PMID: 37105959 DOI: 10.1080/09593330.2023.2206529] [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: 01/04/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
The present investigation sought to assess the practicality of utilizing a combined pre-treatment approach comprising electrocoagulation, peroxide, and hypochlorite treatments for the removal of chemical oxygen demand (COD) and tannin/lignin from paper mill wastewater. The study aimed to optimize the operating parameters with a view to maximizing the removal efficiencies while minimizing energy consumption. A pair of iron electrodes were used as anode and cathode in the study, and the main operating parameters were determined as initial pH, applied current, treatment time and oxidant dosage/COD ratio. Response surface methodology (RSM) was used to evaluate the effect of these parameters on COD and tannin/lignin removals. The primary findings of the investigation indicated that the integration of electrocoagulation with peroxide and hypochlorite treatments exhibited efficacy in removing COD, tannin/lignin, colour, phenol, and turbidity from paper mill wastewater. The optimized conditions resulted in COD removal efficiencies of 48.13 ± 2.2% and 29.53 ± 1.4% for EC with H2O2 and Ca(OCl)2, respectively. Tannin/lignin removal efficiencies were 92.59 ± 3.6% and 94.09 ± 1.8% for EC-H2O2 and EC-Ca(OCl)2, respectively. The specific energy consumption (SEC) values showed that EC-Ca(OCl)2 required 7 times more energy than EC-H2O2 for removing 1 kg COD. The principal deduction drawn from the study was that EC-H2O2 pre-treatment demonstrated superior COD removal efficiency and lower energy consumption, while EC-Ca(OCl)2 pre-treatment exhibited greater efficiency in removing toxic and recalcitrant pollutants. In future studies, it would be useful to conduct research to increase COD removal efficiency in addition to tannin/lignin removal in EC-Ca(OCl)2 process.
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Affiliation(s)
- Abdulkadir Caglak
- Civil Engineering Faculty, Environmental Engineering Department, Yildiz Technical University, Istanbul, Turkey
| | - Hanife Sari-Erkan
- Civil Engineering Faculty, Environmental Engineering Department, Yildiz Technical University, Istanbul, Turkey
| | - Guleda Onkal Engin
- Civil Engineering Faculty, Environmental Engineering Department, Yildiz Technical University, Istanbul, Turkey
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13
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Chen X, Sheng X, Zhou H, Liu Z, Xu M, Feng X. Hydrophobicity Promoted Efficient Hydroxyl Radical Generation in Visible-Light-Driven Photocatalytic Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310128. [PMID: 38174635 DOI: 10.1002/smll.202310128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/19/2023] [Indexed: 01/05/2024]
Abstract
Hydroxyl radical (•OH) with strong oxidation capability is one of the most important reactive oxygen species. The generation of •OH from superoxide radicals (•O2 -) is an important process in visible-light-driven photocatalysis, but the conversion generally suffers from slow reaction kinetics. Here, a hydrophobicity promoted efficient •OH generation in a visible-light-driven semiconductor-mediated photodegradation reaction is reported. Hydrophobic TiO2 that is synthesized by modifying the TiO2 surface with a thin polydimethylsiloxane (PDMS) layer and rhodamine B (RhB) are used as model semiconductors and dye molecules, respectively. The surface hydrophobicity resulted in the formation of a solid-liquid-air triphase interface microenvironment, which increased the local concentration of O2. In the meanwhile, the saturated adsorption quantity of RhB on hydrophobic TiO2 is improved by five-fold than that on untreated TiO2. These advantages increased the density of the conduction band photoelectrons and •O2 - generation, and stimulated the conversion of •O2 - to •OH. This consequently not only increased the kinetics of the photocatalytic reaction by an order of magnitude, but also altered the oxidation route from conventional decolorization to mineralization. This study highlights the importance of surface wettability modulation in boosting •OH generation in visible-light-driven photocatalysis.
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Affiliation(s)
- Xi Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xia Sheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Hang Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Zhiping Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Minmin Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xinjian Feng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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14
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Pasciucco E, Pasciucco F, Iannelli R, Pecorini I. A Fenton-based approach at neutral and un-conditioned pH for recalcitrant COD removal in tannery wastewater: Experimental test and sludge characterization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:172070. [PMID: 38554952 DOI: 10.1016/j.scitotenv.2024.172070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/11/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
The combination of raw animal skin manufacturing processes involves the use of large amounts of chemicals, resulting in the generation of complex and highly polluted tannery wastewater. In this context, the high concentration of chloride in tannery wastewater represents a crucial bottleneck. Indeed, sodium chloride, commonly used in tannery industry to prevent skin rot, increases the concentration of chlorides up to 50 %. At the same time, most of the advanced oxidation processes usually employed in tannery wastewater treatment to remove recalcitrant COD involve the use of conditioning agents, thus increasing the overall concentration of chlorides in the treated effluent. The aim of this study was to evaluate the electrochemical peroxidation process (ECP) efficiency in the treatment of tannery wastewater without changing pH, to improve Fenton technology by avoiding the use of chemicals. The influence of different electric currents on COD and color removal was investigated. The characterization of the produced sludge was conducted through FTIR, SEM and XRD analysis, exploring the morphology and composition of precipitate, depending on the applied current. Although an electrical current of 750 mA yields the highest COD and color removal efficiency (69.7 % and 97.8 %, respectively), 500 mA can be considered the best compromise because of energy consumptions. Iron oxides and hydroxides were generated during the ECP process, playing the role of coagulants through the absorption of organic and inorganic contaminants. The consumption of energy increased as a function of time and applied current; however, cost analysis showed that the electrodes contributed the most to the total cost of the process. In authors' knowledge, the application of ECP process as a tertiary treatment for the removal of recalcitrant COD in tannery wastewater represents a novelty in the literature and the results obtained can be considered as the basis for scaling up the process in future research.
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Affiliation(s)
- Erika Pasciucco
- Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, Pisa, Tuscany 56122, Italy.
| | - Francesco Pasciucco
- Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, Pisa, Tuscany 56122, Italy.
| | - Renato Iannelli
- Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, Pisa, Tuscany 56122, Italy.
| | - Isabella Pecorini
- Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, Pisa, Tuscany 56122, Italy.
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15
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Herraiz-Carboné M, Santos A, Hayat A, Domínguez CM, Cotillas S. Remediation of groundwater polluted with lindane production wastes by conductive-diamond electrochemical oxidation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171848. [PMID: 38518821 DOI: 10.1016/j.scitotenv.2024.171848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/02/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
This work studies the remediation of groundwater saturated with dense non-aqueous phase liquid (DNAPL) from lindane production wastes by electrochemical oxidation. DNAPL-saturated groundwater contains up to 26 chlorinated organic compounds (COCs), including different isomers of hexachlorocyclohexane (HCH). To do this, polluted groundwater was electrolysed using boron-doped diamond (BDD) and stainless steel (SS) as anode and cathode, respectively, and the influence of the current density on COCs removal was evaluated in the range from 5 to 50 mA cm-2. Results show that current densities higher than 25 mA cm-2 lead to the complete removal and mineralisation of all COCs identified in groundwater. The higher the current density, the higher the COCs removal rate. At lower current densities (5 mA cm-2), chlorobenzenes were completely removed, and degradations above 90 % were reached for COCs with more than five chlorine atoms in their molecules. The use of BDD anodes promotes the electrochemical generation of powerful reactive species, such as persulfate, hypochlorite or hydroxyl radicals, that contribute to the degradation and mineralisation of COCs. The applied current density also influences the generation of these species. Finally, no acute toxicity towards Vibrio fischeri was observed for the treated groundwater after the electrochemical oxidation performed at 5 and 10 mA cm-2. These findings demonstrate that electrochemical oxidation with BDD anodes at moderate current densities is a promising alternative for the remediation of actual groundwater contaminated with DNAPLs.
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Affiliation(s)
- Miguel Herraiz-Carboné
- Department of Chemical Engineering and Materials, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Aurora Santos
- Department of Chemical Engineering and Materials, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Ana Hayat
- Department of Chemical Engineering and Materials, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Carmen M Domínguez
- Department of Chemical Engineering and Materials, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Salvador Cotillas
- Department of Chemical Engineering and Materials, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain.
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16
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Rahardjo SSP, Shih YJ, Fan CS. Ammonia oxidation by in-situ chloride electrolysis in etching wastewater of semiconductor manufacturing using RuSnO x/Ti electrode: Effect of plating mode and metal ratio. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134042. [PMID: 38521031 DOI: 10.1016/j.jhazmat.2024.134042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/05/2024] [Accepted: 03/13/2024] [Indexed: 03/25/2024]
Abstract
The indirect chloride-mediated ammonia oxidation encounters challenges in maintaining the effectiveness of metal oxide anodes when treating wastewaters with complex compositions. This study aims to develop a highly stable anode with RuO2-SnO2 coatings for treating an etching effluent from semiconductor manufacturing, which majorly contains NH3 and organic compounds. The RuSnOx/Ti electrode was synthesized using wet impregnation and calcination processes. The metal oxide configuration on Ti plate substrate was tuned by varying the step-dipping process in RuCl3 and SnCl4 baths. A 10-day continuous-flow electrolysis was conducted for studying the ammonia removal and chlorine yield under variable conditions, including detention, pH, current density, and initial ammonia and chloride concentrations. In the RuSnOx coatings, the configuration comprising RuO2 nanorods as the surface layer and an intermediate layer of SnO2 crystallites (by plating Ru3+ for three times to cover one Sn4+ layer, denoted as the Ru3Sn/Ti electrode) exhibited the best durability for acid washing, along with relatively high Faradaic efficiency and low energy consumption. To further improve the treatability of real wastewater (NH3-N = 634 mg L-1, chemical oxygen demand (COD) = 6700 mg L-1, Cl- = 2000 mg L-1, pH 11), the duel-cell electrolyzers were constructed in series under a current density of 30 mA cm-2 and 45 min detention. Ultimately, removals of NH3 and COD reached 95.8% and 76.3%, respectively, with successful limitation of chloramine formation.
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Affiliation(s)
- Seto Sugianto Prabowo Rahardjo
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan; Department of Aquaculture, Brawijaya University, Malang, Jawa Timur, Indonesia
| | - Yu-Jen Shih
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-sen University, Kaohsiung, Taiwan.
| | - Chen-Shiuan Fan
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan
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17
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dos Santos AJ, Shen H, Lanza MR, Li Q, Garcia-Segura S. Electrochemical oxidation of surfactants as an essential step to enable greywater reuse. ENVIRONMENTAL TECHNOLOGY & INNOVATION 2024; 34:103563. [PMID: 38706941 PMCID: PMC11066849 DOI: 10.1016/j.eti.2024.103563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/21/2024] [Accepted: 02/01/2024] [Indexed: 05/07/2024]
Abstract
The practical application of electrochemical oxidation technology for the removal of surfactants from greywater was evaluated using sodium dodecyl sulfate (SDS) as a model surfactant. Careful selection of electrocatalysts and optimization of operational parameters demonstrated effective SDS removal in treating a complex greywater matrix with energy consumption below 1 kWh g-1 COD (Chemical Oxygen Demand), paving the way for a more sustainable approach to achieving surfactant removal in greywater treatment when aiming for decentralized water reuse. Chromatographic techniques identified carboxylic acids as key byproducts prior to complete mineralization. These innovative approaches represent a novel pathway for harnessing electrochemical technologies within decentralized compact devices, offering a promising avenue for further advancements in this field.
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Affiliation(s)
- Alexsandro J. dos Santos
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287–3005, United States
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566–590, Brazil
| | - Hongchen Shen
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical and Biomolecular Engineering, Department of Materials Science and NanoEngineering, and Department of Civil and Environmental Engineering, Rice University, MS 319, 6100 Main Street, Houston 77005, USA
| | - Marcos R.V. Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566–590, Brazil
| | - Qilin Li
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical and Biomolecular Engineering, Department of Materials Science and NanoEngineering, and Department of Civil and Environmental Engineering, Rice University, MS 319, 6100 Main Street, Houston 77005, USA
| | - Sergi Garcia-Segura
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287–3005, United States
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18
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Yu S, He J, Zhang Z, Sun Z, Xie M, Xu Y, Bie X, Li Q, Zhang Y, Sevilla M, Titirici MM, Zhou H. Towards Negative Emissions: Hydrothermal Carbonization of Biomass for Sustainable Carbon Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307412. [PMID: 38251820 DOI: 10.1002/adma.202307412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 01/02/2024] [Indexed: 01/23/2024]
Abstract
The contemporary production of carbon materials heavily relies on fossil fuels, contributing significantly to the greenhouse effect. Biomass is a carbon-neutral resource whose organic carbon is formed from atmospheric CO2. Employing biomass as a precursor for synthetic carbon materials can fix atmospheric CO2 into solid materials, achieving negative carbon emissions. Hydrothermal carbonization (HTC) presents an attractive method for converting biomass into carbon materials, by which biomass can be transformed into materials with favorable properties in a distinct hydrothermal environment, and these carbon materials have made extensive progress in many fields. However, the HTC of biomass is a complex and interdisciplinary problem, involving simultaneously the physical properties of the underlying biomass and sub/supercritical water, the chemical mechanisms of hydrothermal synthesis, diverse applications of resulting carbon materials, and the sustainability of the entire technological routes. This review starts with the analysis of biomass composition and distinctive characteristics of the hydrothermal environment. Then, the factors influencing the HTC of biomass, the reaction mechanism, and the properties of resulting carbon materials are discussed in depth, especially the different formation mechanisms of primary and secondary hydrochars. Furthermore, the application and sustainability of biomass-derived carbon materials are summarized, and some insights into future directions are provided.
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Affiliation(s)
- Shijie Yu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Jiangkai He
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Zhien Zhang
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Zhuohua Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083, P.R. China
| | - Mengyin Xie
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Yongqing Xu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Xuan Bie
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Qinghai Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Yanguo Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
| | - Marta Sevilla
- Instituto de Ciencia y Tecnología del Carbono (INCAR), CSIC, Francisco Pintado Fe 26, Oviedo, 33011, Spain
| | | | - Hui Zhou
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China
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19
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Kraaijeveld E, Rijsdijk S, van der Poel S, van der Hoek JP, Rabaey K, van Halem D. Electrochemical arsenite oxidation for drinking water treatment: Mechanisms, by-product formation and energy consumption. WATER RESEARCH 2024; 253:121227. [PMID: 38377921 DOI: 10.1016/j.watres.2024.121227] [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: 08/23/2023] [Revised: 12/24/2023] [Accepted: 01/28/2024] [Indexed: 02/22/2024]
Abstract
The mechanisms and by-product formation of electrochemical oxidation (EO) for As(III) oxidation in drinking water treatment using groundwater was investigated. Experiments were carried out using a flowthrough system, with an RuO2/IrO2 MMO Ti anode electrode, fed with synthetic and natural groundwater containing As(III) concentrations in a range of around 75 and 2 µg/L, respectively. Oxidation was dependent on charge dosage (CD) [C/L] and current density [A/m2], with the latter showing plateau behaviour for increasing intensity. As(III) concentrations of <0.3 µg/L were obtained, indicating oxidation of 99.9 % of influent As(III). Achieving this required a higher charge dosage for the natural groundwater (>40 C/L) compared to the oxidation in the synthetic water matrix (20 C/L), indicating reaction with natural organic matter or other compounds. As(III) oxidation in groundwater required an energy consumption of 0.09 and 0.21 kWh/m3, for current densities of 20 and 60 A/m2, respectively. At EO settings relevant for As(III) oxidation, in the 30-100 C/L CD range, the formation of anodic by-products, as trihalomethanes (THMs) (0.11-0.75 µg/L) and bromate (<0.2 µg/L) was investigated. Interestingly, concentrations of the formed by-products did not exceed strictest regulatory standards of 1 µg/L, applicable to Dutch tap water. This study showed the promising perspective of EO as electrochemical advanced oxidation process (eAOP) in drinking water treatment as alternative for the conventional use of strong oxidizing chemicals.
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Affiliation(s)
- E Kraaijeveld
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands.
| | - S Rijsdijk
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
| | - S van der Poel
- Dunea, Utility for drinking water and nature conservancy, Plein van de Verenigde Naties 11-15, 2719 EG Zoetermeer, the Netherlands
| | - J P van der Hoek
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
| | - K Rabaey
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - D van Halem
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
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20
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Blach T, Engelhart M. Electrochemical oxidation of refractory compounds from hydrothermal carbonization process waters. CHEMOSPHERE 2024; 352:141310. [PMID: 38320739 DOI: 10.1016/j.chemosphere.2024.141310] [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: 10/12/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/10/2024]
Abstract
Hydrothermal carbonization (HTC) is an emerging technology for treating sewage sludge. However, the resulting HTC process water is heavily contaminated with various carbonaceous and nitrogenous components, some of them being non-biodegradable. To implement HTC as a full-scale treatment alternative for sewage sludge, effective concepts for treating process water are crucial. This study focuses on the electrochemical oxidation (EO) using a boron-doped diamond electrode to treat one HTC process waters with different pretreatments: (i) without pretreatment, (ii) biologically pretreated with chemical oxygen demand (COD) removal, (iii) biologically pretreated with nitrification and denitrification. The EO removed COD of all HTC process waters by over 97%, but as COD concentrations decreased, the instantaneous current efficiency (ICE) dropped below 5% and energy consumption increased. The organically bound and refractory nitrogen was completely mineralized and converted to mainly NO3-N. After EO of process waters without nitrification/denitrification, nitrogen was present as NO3-N with up to 730 mg/L and NH4-N with up to 1813 mg/L. Such high ammonium concentrations treatment could be interesting for nitrogen recovery. In addition, the toxicity towards Vibrio fischeri could be reduced to a large extent. The findings suggest that EO after a biological step with COD removal is a viable solution for HTC process water treatment.
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Affiliation(s)
- T Blach
- Technical University of Darmstadt, Institute IWAR, Franziska-Braun-Str. 7, 64287, Darmstadt, Germany.
| | - M Engelhart
- Technical University of Darmstadt, Institute IWAR, Franziska-Braun-Str. 7, 64287, Darmstadt, Germany
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21
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Li Q, Fang X, Jin L, Sun X, Huang H, Ma R, Zhao H, Ren H. Scientometric analysis of electrocatalysis in wastewater treatment: today and tomorrow. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:19025-19046. [PMID: 38374500 DOI: 10.1007/s11356-024-32472-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/09/2024] [Indexed: 02/21/2024]
Abstract
Electrocatalytic methods are valuable tools for addressing water pollution and scarcity, offering effective pollutant removal and resource recovery. To investigate the current status and future trends of electrocatalysis in wastewater treatment, a detailed analysis of 9417 papers and 4061 patents was conducted using scientometric methods. China emerged as the leading contributor to publications, and collaborations between China and the USA have emerged as the most frequent partnerships. Primary article co-citation clusters focused on oxygen evolution reaction and electrochemical oxidation, transitioning towards advanced oxidation processes ("persulfate activation"), and electrocatalytic reduction processes ("nitrate reduction"). Bifunctional catalysts, theoretical calculations, electrocatalytic combination technologies, and emerging contaminants were identified as current research hotspots. Patent analysis revealed seven types of electrochemical technologies, which were compared using SWOT analysis, highlighting electrochemical oxidation as prominent. The technological evolution presented the pathway of electro-Fenton to combined electrocatalytic technologies with biochemical processes, and finally to coupling with electrocoagulation. Standardized evaluation systems, waste resource utilization, and energy conservation were important directions of innovation in electrocatalytic technologies. Overall, this study provided a reference for researchers to understand the framework of electrocatalysis in wastewater treatment and also shed light on potential avenues for further innovation in the field.
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Affiliation(s)
- Qianqian Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Xiaoya Fang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Lili Jin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Xiangzhou Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Hui Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China.
| | - Rui Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Han Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, No. 163, Xianlin Avenue, Qixia District, Nanjing, 210023, Jiangsu, People's Republic of China
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22
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Mostefaoui N, Oturan N, Bouafia SC, Hien SA, Gibert-Vilas M, Lesage G, Pechaud Y, Tassin B, Oturan M, Trellu C. Integration of electrochemical processes in a treatment system for landfill leachates based on a membrane bioreactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168841. [PMID: 38036133 DOI: 10.1016/j.scitotenv.2023.168841] [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: 08/31/2023] [Revised: 11/16/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Abstract
The use of electrocoagulation (EC) and anodic oxidation (AO) processes was studied for improving a treatment system for landfill leachates based on a membrane bioreactor (MBR) and a nanofiltration step. The main limitation of the current full-scale system is related to the partial removal of organic compounds that leads to operation of the nanofiltration unit with a highly concentrated feed solution. Application of the EC before the MBR participated in partial removal of the organic load (40 %) with limited energy consumption (2.8 kWh m-3) but with additional production of iron hydroxide sludge. Only AO allowed for non-selective removal of organic compounds. As a standalone process, AO would require a sharp increase of the energy consumption (116 kWh for 81 % removal of total organic carbon). But using lower electric charge and combining AO with EC and MBR processes would allow for achieving high overall removal yields with limited energy consumption. For example, the overall removal yield of total organic carbon was 65 % by application of AO after EC, with an energy consumption of 21 kWh m-3. Results also showed that such treatment strategy might allow for a significant increase of the biodegradability of the effluent before treatment by the MBR. The MBR might then be dedicated to the removal of the residual organic load as well as to the removal of the nitrogen load. The data obtained in this study also showed that the lower electric charge required for integrating AO in a coupled process would allow for strongly decreasing the formation of undesired by-products such as ClO3- and ClO4-.
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Affiliation(s)
- Nabil Mostefaoui
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France; Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering USTHB, BP 32, El-Allia, Bab-Ezzouar, Algiers 16111, Algeria
| | - Nihal Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France
| | - Souad Chergui Bouafia
- Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering USTHB, BP 32, El-Allia, Bab-Ezzouar, Algiers 16111, Algeria
| | - Sié Alain Hien
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France; Laboratoire des Procédés Industriels, de Synthèse de l'Environnement et des Energies Nouvelles (LAPISEN), Institut National Polytechnique Houphouët-Boigny, BP 1313, Yamoussoukro, Côte d'Ivoire
| | - Màxim Gibert-Vilas
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France
| | - Geoffroy Lesage
- Institut Européen des Membranes, IEM, UMR 5635, Centre National de la Recherche Scientifique (CNRS), University Montpellier, ENSCM, Place Eugène Bataillon, 34095 Montpellier, France
| | - Yoan Pechaud
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France
| | - Bruno Tassin
- Laboratoire Eau Environnement et Systèmes Urbains, LEESU, Ecole des Ponts, Université Paris-Est Créteil, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
| | - Mehmet Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France
| | - Clément Trellu
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France.
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23
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Torres-Méndez C, Axelsson M, Tian H. Small Organic Molecular Electrocatalysts for Fuels Production. Angew Chem Int Ed Engl 2024; 63:e202312879. [PMID: 37905977 DOI: 10.1002/anie.202312879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
In recent years, heterocyclic organic compounds have been explored as molecular electrocatalysts in relevant reactions for energy conversion and storage. Merging mimetics of biological systems that perform hydride transfer with rational synthetic chemical design has opened many opportunities for organic molecules to be tuned at the atomic level conferring them interesting reactivities. These molecular electrocatalysts represent an alternative to traditional metallic materials and metal complexes employed for water oxidation, hydrogen production, and carbon dioxide reduction. This minireview describes recent reports concerning design, catalytic activity and the mechanism of synthetic molecular electrocatalysts towards solar fuels production.
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Affiliation(s)
- Carlos Torres-Méndez
- Department of Chemistry-Ångström Laboratory, Uppsala University, SE-75120, Uppsala, Sweden
| | - Martin Axelsson
- Department of Chemistry-Ångström Laboratory, Uppsala University, SE-75120, Uppsala, Sweden
| | - Haining Tian
- Department of Chemistry-Ångström Laboratory, Uppsala University, SE-75120, Uppsala, Sweden
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24
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Khan MJ, Wibowo A, Karim Z, Posoknistakul P, Matsagar BM, Wu KCW, Sakdaronnarong C. Wastewater Treatment Using Membrane Bioreactor Technologies: Removal of Phenolic Contaminants from Oil and Coal Refineries and Pharmaceutical Industries. Polymers (Basel) 2024; 16:443. [PMID: 38337332 DOI: 10.3390/polym16030443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/22/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
Huge amounts of noxious chemicals from coal and petrochemical refineries and pharmaceutical industries are released into water bodies. These chemicals are highly toxic and cause adverse effects on both aquatic and terrestrial life. The removal of hazardous contaminants from industrial effluents is expensive and environmentally driven. The majority of the technologies applied nowadays for the removal of phenols and other contaminants are based on physio-chemical processes such as solvent extraction, chemical precipitation, and adsorption. The removal efficiency of toxic chemicals, especially phenols, is low with these technologies when the concentrations are very low. Furthermore, the major drawbacks of these technologies are the high operation costs and inadequate selectivity. To overcome these limitations, researchers are applying biological and membrane technologies together, which are gaining more attention because of their ease of use, high selectivity, and effectiveness. In the present review, the microbial degradation of phenolics in combination with intensified membrane bioreactors (MBRs) has been discussed. Important factors, including the origin and mode of phenols' biodegradation as well as the characteristics of the membrane bioreactors for the optimal removal of phenolic contaminants from industrial effluents are considered. The modifications of MBRs for the removal of phenols from various wastewater sources have also been addressed in this review article. The economic analysis on the cost and benefits of MBR technology compared with conventional wastewater treatments is discussed extensively.
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Affiliation(s)
- Mohd Jahir Khan
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Putthamonthon 4 Road, Salaya, Putthamonthon, Nakhon Pathom 73170, Thailand
| | - Agung Wibowo
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Putthamonthon 4 Road, Salaya, Putthamonthon, Nakhon Pathom 73170, Thailand
| | - Zoheb Karim
- MoRe Research Örnsköldsvik AB, SE-89122 Örnsköldsvik, Sweden
| | - Pattaraporn Posoknistakul
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Putthamonthon 4 Road, Salaya, Putthamonthon, Nakhon Pathom 73170, Thailand
| | - Babasaheb M Matsagar
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li, Taoyuan 32003, Taiwan
| | - Chularat Sakdaronnarong
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Putthamonthon 4 Road, Salaya, Putthamonthon, Nakhon Pathom 73170, Thailand
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25
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Vieira GDF, Barbosa Segundo ID, Souza DFS, Gondim AD, Cavalcanti LN, Dos Santos EV, Martínez-Huitle CA. Sulphate-based electrochemical processes as an alternative for the remediation of a beauty salon effluent ‡. CHEMOSPHERE 2024; 349:140834. [PMID: 38042421 DOI: 10.1016/j.chemosphere.2023.140834] [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: 06/30/2023] [Revised: 11/20/2023] [Accepted: 11/26/2023] [Indexed: 12/04/2023]
Abstract
Beauty salons (BS) are places that deal with a wide range of cosmetics with potentially hazardous chemicals, and their effluent should be properly treated before going to the sewage system, once it represents characteristics of industrial wastewater. This work provides an extensive characterization of a BS effluent and its respective electrochemical treatment by comparing NaCl, Na2SO4, and Na2S2O8 as supporting electrolytes with a boron-doped diamond (BDD) as anode, applying 10 or 30 mA cm-2 of current density (j). The inclusion of UVC irradiation was also performed but the improvements achieved in removing the organic matter were null or lower. The analysis of chemical oxygen demand (COD) removal, energy consumption, and total current efficiency (TCE) was required to prove the efficacy of the processes and the comparative study of the performance of different technologies. Precipitate analysis was also done due to the high turbidity of the raw effluent and the appearance of a precipitate before and during the electrolysis, mainly with Na2S2O8. The precipitate confirmed the presence of silicates and small amounts of heavy metals. The results clearly showed that 6 h of treatment with Na2SO4 achieved 58% of COD removal with an energy consumption of about 0.52 kWh m-3, being the best electrolyte option for treating BS effluent by applying 10 mA cm-2. Under these experimental conditions, the final wastewater can be directly discharged into the sewage system with a lower amount of visible precipitate, and with 73% less turbidity. The treatment here proposed can be used as an alternative to decision-makers and governments once it can be a step further in the implementation of better and advanced politics of water sanitation.
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Affiliation(s)
- Gleilson de França Vieira
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil
| | - Inalmar D Barbosa Segundo
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil.
| | - Domingos F S Souza
- Chemical Engineering Department, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil
| | - Amanda D Gondim
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil
| | - Lívia N Cavalcanti
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil
| | - Elisama V Dos Santos
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, UNESP, P.O. Box 355, 14800 900 Araraquara, SP, Brazil
| | - Carlos A Martínez-Huitle
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP, 59078-970, Natal, Rio Grande do Norte, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, UNESP, P.O. Box 355, 14800 900 Araraquara, SP, Brazil.
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26
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Cao Q, Huang M, Qian L, Wang J, Wang D, Zheng X. Electron-deficient Fe 3O 4@AC-NH 2@Cu-MOF nanoparticles for enhanced degradation of electron-rich benzene derivatives via synergistic adsorption and catalytic oxidation. Dalton Trans 2024; 53:2265-2274. [PMID: 38196313 DOI: 10.1039/d3dt03431c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Benzene derivatives in wastewater have negative impacts on ecosystems and human health, making their removal prior to discharge imperative. In this study, Fe3O4@AC-NH2@Cu-opa (AC-NH2 = aminoclay, Cu-opa = [Cu(opa)(bipy)0.5(H2O)]n (H2opa = 3-(4-oxypyridinium-1-yl) phthalic acid)) nanoparticles (NPs) were synthesized as adsorbent and catalyst for phenolic compound removal from wastewater. Fe3O4@AC-NH2@Cu-opa NPs demonstrated outstanding performance in the adsorption of phenol, exhibiting a remarkable adsorption capacity of up to 166.39 mg g-1 according to the Langmuir model. The composite also exhibited higher Fenton activity toward the degradation of electron-rich organic phenolic pollutants, with a rate approximately 3.4 times higher than that of Fe3O4 alone. The high catalytic activity of the composite was attributed to the large surface area and abundant active sites of the 2D charge-separated Cu-MOF. Meanwhile, the superparamagnetism of the Fe3O4 core enabled magnetic recollection and reuse without any significant loss of activity. Therefore, use of Fe3O4@AC-NH2@Cu-opa/H2O2 shows potential in an efficient method for the removal of phenolic compounds from wastewater.
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Affiliation(s)
- Qingpeng Cao
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
| | - Mengjia Huang
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
| | - Libin Qian
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
| | - Jin Wang
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
| | - Di Wang
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
| | - Xubin Zheng
- Intelligent Perception Research Institute, Zhejiang Lab, Hangzhou, China.
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27
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Iovino P, Lavorgna M, Orlo E, Russo C, De Felice B, Campolattano N, Muscariello L, Fenti A, Chianese S, Isidori M, Musmarra D. An integrated approach for the assessment of the electrochemical oxidation of diclofenac: By-product identification, microbiological and eco-genotoxicological evaluation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 909:168511. [PMID: 37977373 DOI: 10.1016/j.scitotenv.2023.168511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Diclofenac (DCF), a contaminant of emerging concern, is a non-steroidal anti-inflammatory drug widely detected in water bodies, which demonstrated harmful acute and chronic toxicity toward algae, zooplankton and aquatic invertebrates, therefore its removal from impacted water is necessary. DCF is recalcitrant toward traditional treatment technologies, thus, innovative approaches are required. Among them, electrochemical oxidation (EO) has shown promising results. In this research, an innovative multidisciplinary approach is proposed to assess the electrochemical oxidation (EO) of diclofenac from wastewater by integrating the investigations on the removal efficiency and by-product identification with the disinfection capacity and the assessment of the effect on environmental geno-toxicity of by-products generated through the oxidation. The electrochemical treatment successfully degraded DCF by achieving >98 % removal efficiency, operating with NaCl 0.02 M at 50 A m-2. By-product identification analyses showed the formation of five DCF parental compounds generated by decarboxylic and CN cleavage reactions. The disinfection capacity of the EO technique was evaluated by carrying out microbiological tests on pathogens generally found in aquatic environments, including two rod-shaped Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli), one rod-shaped Gram-positive bacterium (Bacillus atrophaeus), and one Gram-positive coccus (Enterococcus hirae). Eco-toxicity was evaluated in freshwater organisms (algae, rotifers and crustaceans) belonging to two trophic levels through acute and chronic tests. Genotoxicity tests were carried out by Comet assay, and relative expression levels of catalase, manganese and copper superoxide dismutase genes in crustaceans. Results highlight the effectiveness of EO for the degradation of diclofenac and the inactivation of pathogens; however, the downstream mixture results in being harmful to the aquatic ecosystem.
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Affiliation(s)
- P Iovino
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - M Lavorgna
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - E Orlo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - C Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy.
| | - B De Felice
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - N Campolattano
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - L Muscariello
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - A Fenti
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, Aversa 81031, Italy.
| | - S Chianese
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, Aversa 81031, Italy
| | - M Isidori
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Via Vivaldi 43, Caserta 81100, Italy
| | - D Musmarra
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, Aversa 81031, Italy
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Sari Erkan H, Kaska D, Kara N, Onkal Engin G. Fluoxetine removal by anodic oxidation using different anode materials and graphite cathode. ENVIRONMENTAL TECHNOLOGY 2024:1-14. [PMID: 38234107 DOI: 10.1080/09593330.2024.2304660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/20/2023] [Indexed: 01/19/2024]
Abstract
Fluoxetine (FLX) is a selective serotonin reuptake inhibitor (SSRI) medication commonly used to treat mental health disorders, but it can be harmful to the environment if not properly disposed of due to incomplete metabolism. In this study, electrochemical anodic oxidation with mixed metal oxide anodes was studied as a method to remove FLX from water and wastewater. Iridium dioxide-coated titanium (Ti/IrO2) and ruthenium dioxide-coated Ti (Ti/RuO2) electrodes were found to be more effective than platinum-coated Ti (Ti/Pt) electrodes, with removal efficiencies of 91.5% and 93.9%, respectively. Optimal conditions for FLX removal were determined to be an applied current of 150 mA, initial pH of 5, and oxidation time of 120 min. The rate of FLX degradation (kFLX) for the Ti/Pt, Ti/IrO2, and Ti/RuO2 electrodes were determined to be 0.0081 min-1 (R2:0,8161), 0.0163 min-1 (R2:0,9823), and 0.0168 (R2:0,9901) min-1 for 25 mg/L initial FLX concentration, respectively. The kFLX values varied based on the initial FLX concentration and decreased as the initial FLX concentration increased. The specific energy consumption (SEC) after 120 min of operation was 51.0 kWh/m3 for the Ti/Pt electrode, 39.6 kWh/m3 for the Ti/IrO2 electrode, and 48.6 kWh/m3 for the Ti/RuO2 electrode under optimised conditions. Overall, electrochemical anodic oxidation is an effective method for removing FLX from water and wastewater, with Ti/IrO2 and Ti/RuO2 electrodes providing superior performance compared to Ti/Pt electrodes.
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Affiliation(s)
- Hanife Sari Erkan
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Deniz Kaska
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Narin Kara
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Guleda Onkal Engin
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Istanbul, Turkey
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29
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Zhang K, Wang R, Wang H, Li M, Zhao P, Wang Y, Wang B, Shi H, Zhang W, Gao S, Huang Q. Electrooxidation of chlorophene and dichlorophen by reactive electrochemical membrane: Key determining factors of removal efficiency. ENVIRONMENTAL RESEARCH 2024; 241:117612. [PMID: 37951380 DOI: 10.1016/j.envres.2023.117612] [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: 08/24/2023] [Revised: 10/20/2023] [Accepted: 11/04/2023] [Indexed: 11/14/2023]
Abstract
This study systematically investigated the variable main electrooxidation mechanism of chlorophene (CP) and dichlorophen (DCP) with the change of reaction conditions at Ti4O7 anode operated in batch and reactive electrochemical membrane (REM) modes. Significant degradation of CP and DCP was observed, that is, CP exhibited greater removal efficiency in batch mode at 0.5-3.5 mA cm-2 and REM operation (0.5 mA cm-2) with a permeate flow rate of 0.85 cm min-1 under the same reaction conditions, while DCP exhibited a faster degradation rate with the increase of current density in REM operation. Density functional theory (DFT) simulation and electrochemical performance tests indicated that the electrooxidation efficiency of CP and DCP in batch mode was primarily affected by the mass transfer rates. And the removal efficiency when anodic potentials were less than 1.7 V vs SHE in REM operation was determined by the activation energy for direct electron transfer (DET) reaction, however, the adsorption function of CP and DCP on the Ti4O7 anode became a dominant factor in determining the degradation efficiency with the further increase of anodic potential due to the disappeared activation barrier. In addition, the degradation pathways of CP and DCP were proposed according to intermediate products identification and frontier electron densities (FEDs) calculation, the acute toxicity of CP and DCP were also effectively decreased during both batch and REM operations.
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Affiliation(s)
- Kehao Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Ruifeng Wang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China; College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China
| | - Hailong Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China; Zhongyuan Critical Metals Laboratory, Zhengzhou, 450001, China
| | - Mingliang Li
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China; Zhongyuan Critical Metals Laboratory, Zhengzhou, 450001, China
| | - Pengbo Zhao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yaye Wang
- Jiangsu Province Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
| | - Beibei Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China
| | - Huanhuan Shi
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China.
| | - Wei Zhang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Shixiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
| | - Qingguo Huang
- College of Agricultural and Environmental Sciences, Department of Crop and Soil Sciences, University of Georgia, Griffin, GA, 30223, United States
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30
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Wu L, Garg S, Waite TD. Electrochemical treatment of wastewaters containing metal-organic complexes: A one-step approach for efficient metal complex decomposition and selective metal recovery. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133526. [PMID: 38278072 DOI: 10.1016/j.jhazmat.2024.133526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/13/2023] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Metal-organic complexes, especially those of ethylenediaminetetraacetic acid (EDTA) with metals such as copper (Cu) and nickel (Ni) (denoted here as Cu-EDTA and Ni-EDTA), are common contaminants in wastewaters from chemical and plating industries. In this study, a multi-electrode (ME) system using a two-chamber reactor and two pairs of electrodes is proposed for simultaneous electrochemical oxidation of a wastewater containing both Cu-EDTA and Ni-EDTA complexes as well as separation and selective recovery of Cu and Ni onto two different cathodes via electrodeposition. Our results demonstrate that the ME system successfully achieved 90% EDTA removal, 99% solid Cu recovery at the Cu recovery cathode and 56% Ni recovery (33.3% on the Ni recovery cathode and 22.6% in the solution) after a four-hour operation. The system further achieved 85.5% Ni recovery after consecutive five cycles of operation for 20 h. While Cu removal was mainly driven by the direct reduction of EDTA-complexed Cu(II) at the cathode, oxidation of EDTA within the Ni-EDTA complex at the anode was a prerequisite for Ni removal. The oxidation of metal-bound EDTA and free EDTA was driven by •OH and direct electron transfer on the PbO2 anode surface and graphite anode, respectively. We further show that ME system performs well for all pH conditions, treatment of real wastewaters as well as wastewaters containing other metals ions (Cr and Zn) along with Cu/Ni. The separation efficiency of Cu and Ni is dependent on applied electrode potential as well as nature and concentration of binding ligand present with comparatively lower separation efficiency achieved in the presence of weaker binding capacity and/or at lower ligand concentration and lower applied electrode potential. As such, some optimization of electrode potential is required depending on the nature/concentration of ligands in the wastewaters. Overall, this study provides new insights into the design and operation of EAOP technology for effective organic abatement and metal recovery from wastewaters containing mixtures of various metal-organic complexes.
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Affiliation(s)
- Lei Wu
- UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu 214206, PR China; UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Shikha Garg
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - T David Waite
- UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu 214206, PR China; UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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31
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Yan L, Liu R, Zhang C, Fu D. Investigation into the electrochemical advanced oxidation of p-arsanilic acid: Peculiar role of electrolytes and unexpected formation of coupling byproducts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167538. [PMID: 37797755 DOI: 10.1016/j.scitotenv.2023.167538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/19/2023] [Accepted: 09/30/2023] [Indexed: 10/07/2023]
Abstract
Although banned in some countries, p-arsanilic acid (ASA) is still widely used as feed additive in poultry production. As a result, ASA is usually released into the aquatic environment without any treatments. Although ASA exhibits low toxicity, it can be transformed into highly toxic aromatic amines and inorganic arsenic species (As (V) as H2AsO4- and HAsO42-) under natural environmental conditions. Hence, it is necessary to develop efficient technologies for its removal or degradation. In this contribution, electrochemical advanced oxidation technology with boron-doped diamond (BDD) had been initially used to degrade ASA pollutants. A five-level central composite rotatable design (CCRD) was implemented to optimize the various influencing factors involved, among applied current density, NaCl concentration, Na2SO4 concentration and NaHCO3 concentration on the oxidation efficiency; the latter was assessed in terms of ASA degradation percentage. The results obtained highlighted the unique and important roles of electrolytes during the electrolytic oxidations. Meanwhile, the major degradation byproducts detected were also strongly dependent on the electrolyte adopted. In particular, several oligomer byproducts with novel structures were initially identified in BDD-treated ASA solutions. Two different electrochemical transformation pathways of ASA on BDD anode were thus proposed. This study demonstrated the effectiveness of BDD technology in the degradation of ASA, as well as the potential minor risk of its application in actual ASA wastewater treatment.
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Affiliation(s)
- Lihua Yan
- College of Science, Nanjing Agricultural University, Nanjing 210095, China; College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruochen Liu
- College of Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Chunyong Zhang
- College of Science, Nanjing Agricultural University, Nanjing 210095, China; State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China.
| | - Degang Fu
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China
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Li Y, Ma H, Li Q, Yan G, Guo S. One-step synthesis of Pt-Nd co-doped Ti/SnO 2-Sb nanosphere electrodes used to degrade nitrobenzene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:4528-4538. [PMID: 38102431 DOI: 10.1007/s11356-023-31406-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Ti/SnO2-Sb electrodes possess high catalytic activity and efficiently degrade nitrobenzene (NB); however, their low service life limits their wide application. In this study, we used one-step hydrothermal synthesis to successfully prepare Pt-Nd co-doped Ti/SnO2-Sb nanosphere electrodes. Scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were applied to characterize the surface morphology, microstructure, and chemical composition of the electrodes, respectively. The electrochemical activity and stability of the electrodes were characterized via linear sweep and cyclic voltammetry, electrochemical impedance spectroscopy, and an accelerated service life test; their performance for NB degradation was also studied. An appropriate amount of Pt-Nd co-doping refined the average grain size of SnO2 and formed a uniform and compact coating on the electrode surface. The oxygen evolution potential, total voltammetric charge, and electron transfer resistance of the Ti/SnO2-Sb-Nd-Pt electrodes were 1.88 V, 3.77 mC/cm2, and 11.50 Ω, respectively. Hydroxy radical was the main active radical species during the electrolytic degradation of nitrobenzene with Ti/SnO2-Sb-Nd-Pt. After Pt-Nd co-doping, the accelerated service life of the electrodes was extended from 8.0 min to 78.2 h (500 mA/cm2); although the NB degradation rate decreased from 94.1 to 80.6%, the total amount of theoretical catalytic degradation of NB in the effective working time increased from 17.4 to 8754.1 mg/cm2. These findings reveal good application potential for the electrodes and provide a reference for developing efficient and stable electrode materials.
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Affiliation(s)
- Yang Li
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Hairun Ma
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Qianwei Li
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Guangxu Yan
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Shaohui Guo
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum-Beijing, Beijing, 102249, China.
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Chen X, Ma H, Wang R, Wang M, Zhu B, Cong Y, Zhu X, Wang G, Zhang Y. Plasma-assisted assembly of Co 3O 4/TiO 2-NRs for photoelectrocatalytic degradation of bisphenol A in solution and muddy systems. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122876. [PMID: 37931677 DOI: 10.1016/j.envpol.2023.122876] [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: 07/27/2023] [Revised: 10/16/2023] [Accepted: 11/03/2023] [Indexed: 11/08/2023]
Abstract
Herein, Co3O4/TiO2-NRs electrodes with excellent photoresponse have been prepared via the plasma-assisted modification of Co3O4 on TiO2. With the combination of Co3O4 and TiO2, the composite electrode exhibited a red-shift phenomenon and the absorption of UV and visible light were enhanced to improve the light utilization efficiency. The Mott-Schottky diagram showed that a P-N heterojunction was successfully formed between Co3O4 and TiO2 on the electrode, which inhibited the recombination of electrons and holes, and had a high photocurrent density. In our photoelectrocatalysis (PEC) degradation experiments, the degradation rates of bisphenol A (BPA) by Co3O4/TiO2-NRs electrode in Na2SO4 and simulated seawater system reached 69.44 and 100%, respectively. The important role of ·O2-, ·OH, h+, and active chlorine (Cl·, HClO/ClO-, and Cl2) on the Co3O4/TiO2-NRs electrode during the degradation of BPA in simulated seawater was revealed. In addition, PEC combined with electrokinetic (EK) studies with the Co3O4/TiO2-NRs electrode were used for the degradation of BPA in muddy water, initially expanding the application scope of the PEC performance of the Co3O4/TiO2-NRs electrode for pollutants degradation, and had great potential for the subsequent treatment of muddy water pollutants.
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Affiliation(s)
- Xinwei Chen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Hao Ma
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Run Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Man Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Binbin Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yanqing Cong
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Xiayue Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Guoqin Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yi Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China.
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Berenguer R, Fernández-Aguirre MG, Beaumont S, Huerta F, Morallón E. Anodic abatement of glyphosate on Pt-doped SnO 2-Sb electrodes promoted by pollutant-dopant electrocatalytic interactions. CHEMOSPHERE 2024; 346:140635. [PMID: 37939930 DOI: 10.1016/j.chemosphere.2023.140635] [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: 07/14/2023] [Revised: 11/05/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023]
Abstract
The development of non-expensive and efficient technologies for the elimination of Glyphosate (GLP) in water is of great interest for society today. Here we explore novel electrocatalytic effects to boost the anodic oxidation of GLP on Pt-doped (3-13met%) SnO2-Sb electrodes. The study reveals the formation of well disperse Pt nanophases in SnO2-Sb that electrocatalyze GLP elimination. Cyclic voltammetry and in-situ spectroelectrochemical FTIR analysis evidence carboxylate-mediated Pt-GLP electrocatalytic interactions to promote oxidation and mineralization of this herbicide. Interestingly, under electrolytic conditions Pt effects are proposed to synergistically cooperate with hydroxyl radicals in GLP oxidation. Furthermore, the formation of by-products has been followed by different techniques, and the studied electrodes are compared to commercial Si/BDD and Ti/Pt anodes and tested for a real GLP commercial product. Results show that, although BDD is the most effective anode, the SnO2-Sb electrode with a 13 met% Pt can mineralize GLP with lower energy consumption.
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Affiliation(s)
- Raúl Berenguer
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain.
| | - Maribel G Fernández-Aguirre
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain; Escuela Profesional de Química, Facultad de Ciencias, Universidad Nacional de Ingeniería, Av. Túpac Amaru, 210, Lima, Peru
| | - Samuel Beaumont
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain
| | - Francisco Huerta
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València, Pza Ferrándiz y Carbonell, E-03801 Alcoy, Alicante, Spain
| | - Emilia Morallón
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain
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Li B, Zhang Y, Du Y, Li D, Zhou A, Shao X, Cao L, Yang J. Robust PbO 2 modified by co-deposition of ZrO 2 nanoparticles for efficient degradation of ceftriaxone sodium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:5158-5172. [PMID: 38110683 DOI: 10.1007/s11356-023-31390-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/02/2023] [Indexed: 12/20/2023]
Abstract
In recent years, PbO2 electrodes have received widespread attention due to their high oxygen evolution reaction (OER) activity. However, due to the brittle nature of the plating layer, it is easy to cause the active layer to fall off. Pb2+ will leach out with the electrochemical process causing secondary pollution. The starting point of this study is established to improve the stability and adhesion of the electrode coating. Electrochemical oxidation technology has the characteristics of high treatment efficiency, wide range of applications, and non-polluting environment. In this study, conventional PbO2 electrodes were modified by using co-deposition of ZrO2 nanoparticles. In addition, α-PbO2 was added to increase the stability of the electrodes. At a high current density of 1 A/cm2, the accelerated life of the pure PbO2 electrode is 648 h, the accelerated life of the PbO2-ZrO2 electrode is 1.37 times that of the pure PbO2, and the electrode with an added α-PbO2 layer is 1.69 times that of the pure PbO2 electrode. The amount of dissolved Pb2+ was only 29% of that of pure PbO2. The electrochemical performance of the electrode is evaluated by studying the degradation effect of ceftriaxone sodium (CXM). The addition of ZrO2 nanoparticles alters the particle size and deposition content of PbO2, leading to a unique crystal structure distinct from pure PbO2. Compared to conventional PbO2 electrodes, the PbO2-ZrO2 can remove chemical oxygen demand (COD) and pollutants more efficiently, removing for 59% increased by 38.47%. Therefore, PbO2-ZrO2 is of great value in the field of electrochemical degradation of industrial pollutants.
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Affiliation(s)
- Binbin Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Yuting Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Yan Du
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Danni Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Anhui Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Xiang Shao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Limei Cao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Ji Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control On Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, People's Republic of China.
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Cong SQ, Wang B, Wang H, Zheng QC, Yang QR, Yang RT, Li QL, Wang WS, Cui XJ, Luo FX. Fe 3O 4-lignin@Pd-NPs: A highly active, stable and broad-spectrum nanocomposite for water treatment. Int J Biol Macromol 2024; 256:128233. [PMID: 38040166 DOI: 10.1016/j.ijbiomac.2023.128233] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
In this work, we report an environmentally friendly renewable nanocomposite magnetic lignin-based palladium nanoparticles (Fe3O4-lignin@Pd-NPs) for efficient wastewater treatment by decorating palladium nanoparticles without using any toxic reducing agents on the magnetic lignin abstracted from Poplar. The structure of composite Fe3O4-lignin@Pd-NPs was unambiguously confirmed by XRD, SEM, TEM, EDS, FTIR, and Zeta potential. After systematic evaluation of the use and efficiency of the composite to remove toxic organic dyes in wastewater, some promising results were observed as follows: Fe3O4-lignin@Pd-NPs exhibits highly active and efficient performance in the removal of toxic methylene blue (MB) (up to 99.8 %) wastewater in 2 min at different concentrations of MB and different pH values. Moreover, except for toxic MB, the other organic dyes including Rhodamine B (RhB), Rhodamine 6G (Rh6G), and Methyl Orange (MO) can also be removed efficiently by the composite. Finally, the easily recovered composite Fe3O4-lignin@Pd-NPs exhibits well stability and reusability, and catalytic efficiency is maintained well after ten cycles. In conclusion, the lignin-based magnetism Pd composite exhibits powerful potential practical application in industrial wastewater treatment.
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Affiliation(s)
- Si-Qi Cong
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Bo Wang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Han Wang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Qiu-Cui Zheng
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Qian-Ru Yang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Ruo-Tong Yang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Qian-Li Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Wen-Shu Wang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Xiao-Jie Cui
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Fei-Xian Luo
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
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Sharan S, Khare P, Shankar R, Mishra NK, Tyagi A. Bimetal-oxide (Fe/Co) modified bagasse-waste carbon coated on lead oxide-battery electrode for metronidazole removal. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119104. [PMID: 37793292 DOI: 10.1016/j.jenvman.2023.119104] [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: 05/25/2023] [Revised: 08/17/2023] [Accepted: 09/01/2023] [Indexed: 10/06/2023]
Abstract
Current study covers the preparation and application of a commercial modified lead oxide battery electrode (LBE) in electrochemical oxidation (ECO) of metronidazole (MNZ) in an aqueous phase. Modified electrode is prepared by doping of bimetal-oxide (Fe and Zn) nanoparticles (NPs) & single metal-oxide (Fe/Zn) on bagasse-waste carbon (bwc) which is further coated on LBE. The modified LBE electrode surface was examined for metal-oxide NPs through X-ray diffraction analysis (XRD). Different electrodes are prepared by varying combinations of two metal-oxide based on molar ratio and tested for electrochemical characterization and MNZ removal test. Based on large oxygen evolution potential in a linear sweep volumetry (LSV) analysis and high MNZ removal rate, the best electrode has been represented as Fe1:Co2-bwc/LBE which contains Fe & Co molar ratio of 1:2. Moreover, equilibrium attained at faster rate in degradation process of MNZ, where pseudo first order kinetics of 2.29 × 10-2 min-1 was obtained under optimized condition of (MNZ:100 mg/L, pH:7, CD: 30 mA/cm2 and electrolyte: 0.05 M Na2SO4). Maximum MNZ removal, total organic carbon removal (TOC), mineralization current efficiency (MCE) & energy consumption (EC) of 98.7%, 85.3%, 62.2% & 96.143 kW h/kg-TOC removed are found in 180 min of treatment time for Fe1:Co2-bwc/LBE electrode. Accelerated service life test confirms that the stability of modified electrode is enhanced by 1.5 times compared to pristine LBE. Repeatability test confirms that modified LBE (Fe1:Co2-bwc/LBE) can be utilized up to 3 times.
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Affiliation(s)
- Shambhoo Sharan
- Department of Chemical Engineering, Madan Mohan Malviya University of Technology, Gorakhpur, 273010, Uttar Pradesh, India.
| | - Prateek Khare
- Department of Chemical Engineering, Madan Mohan Malviya University of Technology, Gorakhpur, 273010, Uttar Pradesh, India.
| | - Ravi Shankar
- Department of Chemical Engineering, Madan Mohan Malviya University of Technology, Gorakhpur, 273010, Uttar Pradesh, India.
| | - Navneet Kumar Mishra
- Department of Chemical Engineering, Madan Mohan Malviya University of Technology, Gorakhpur, 273010, Uttar Pradesh, India
| | - Ankit Tyagi
- Department of Chemical Engineering, Indian Institute of Technology Jammu, 181221, India.
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Larralde-Piña IA, Acuña-Askar K, Villanueva-Rodríguez M, Guzmán-Mar JL, Murillo-Sierra JC, Ruiz-Ruiz EJ. An optimized electro-fenton pretreatment for the degradation and mineralization of a mixture of ofloxacin, norfloxacin, and ciprofloxacin. CHEMOSPHERE 2023; 344:140339. [PMID: 37820878 DOI: 10.1016/j.chemosphere.2023.140339] [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: 06/22/2023] [Revised: 09/18/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023]
Abstract
The electro-Fenton process (EFP) is a powerful advanced oxidation process beneficial to treating recalcitrant contaminants, and there has been a continuing interest in combining this technology to enhance the efficiency of conventional wastewater treatment processes. In this work, an optimized EFP process is performed as pretreatment for the degradation and mineralization of three blank fluoroquinolones (FQs) drugs: ofloxacin (OFL), norfloxacin (NOR), and ciprofloxacin (CIP). The optimization of the experiment was carried out using a Box-Behnken experimental design. Faster and complete degradation of the drugs mixture was achieved in 90 min with 61.12 ± 2.0% of mineralization in 180 min, under the optimized conditions: j = 244.0 mA cm-2, [Fe2+] = 0.31 mM, and [FQs] = 87.0 mg L-1. Furthermore, a low toxicity effluent was obtained in 90 min of the experiment, according to bioassay toxicity with Vibrio fischeri. Five short-chain carboxylic acids, including oxalic, maleic, oxamic, formic, and fumaric acids, were detected and quantified, in addition to F- and NO3- inorganic ions. The inhibition of the reactive oxygen species with scavenger proof was also evaluated in this paper.
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Affiliation(s)
- I A Larralde-Piña
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - K Acuña-Askar
- Universidad Autónoma de Nuevo León (UANL), Facultad de Medicina, Depto. de Microbiología, Monterrey, Nuevo León, C.P. 64460, México
| | - M Villanueva-Rodríguez
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - J L Guzmán-Mar
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - J C Murillo-Sierra
- Universidad de Concepción, Facultad de Ciencias Químicas, Edmundo Larenas 129, Concepción, Chile
| | - E J Ruiz-Ruiz
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México.
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McBeath ST, Zhang Y, Hoffmann MR. Novel Synthesis Pathways for Highly Oxidative Iron Species: Generation, Stability, and Treatment Applications of Ferrate(IV/V/VI). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:18700-18709. [PMID: 36794970 PMCID: PMC10690715 DOI: 10.1021/acs.est.2c09237] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Difficulties arise related to the economy-of-scale and practicability in applying conventional water treatment technologies to small and remote systems. A promising oxidation technology better suited for these applications is that of electro-oxidation (EO), whereby contaminants are degraded via direct, advanced, and/or electrosynthesized oxidant-mediated reactions. One species of oxidants of particular interest includes ferrates (Fe(VI)/(V)/(IV)), where only recently has their circumneutral synthesis been demonstrated, using high oxygen overpotential (HOP) electrodes, namely boron-doped diamond (BDD). In this study, the generation of ferrates using various HOP electrodes (BDD, NAT/Ni-Sb-SnO2, and AT/Sb-SnO2) was investigated. Ferrate synthesis was pursued in a current density range of 5-15 mA cm-2 and initial Fe3+ concentrations of 10-15 mM. Faradaic efficiencies ranged from 11-23%, depending on operating conditions, with BDD and NAT significantly outperforming AT electrodes. Speciation tests revealed that NAT synthesizes both ferrate(IV/V) and ferrate(VI), while the BDD and AT electrodes synthesized only ferrate(IV/V) species. A number of organic scavenger probes were used to test the relative reactivity, including nitrobenzene, carbamazepine, and fluconazole, whereby ferrate(IV/V) was significantly more oxidative than ferrate(VI). Finally, the ferrate(VI) synthesis mechanism by NAT electrolysis was elucidated, where coproduction of ozone was found to be a key phenomenon for Fe3+ oxidation to ferrate(VI).
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Affiliation(s)
- Sean T. McBeath
- Linde
Laboratories, California Institute of Technology, Pasadena, California 91125, United States
- Department
of Civil and Environmental Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01002, United States
| | - Yi Zhang
- Linde
Laboratories, California Institute of Technology, Pasadena, California 91125, United States
| | - Michael R. Hoffmann
- Linde
Laboratories, California Institute of Technology, Pasadena, California 91125, United States
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40
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Lara-Ramos JA, Diaz-Angulo J, Mosquera-Vargas E, Mueses MA, Machuca-Martínez F. Performance of a pilot-scale BDD reactor by numerical analysis of reaction rate parameters and additional numbers for mass transfers. CHEMOSPHERE 2023; 341:139988. [PMID: 37669720 DOI: 10.1016/j.chemosphere.2023.139988] [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: 03/16/2023] [Revised: 07/21/2023] [Accepted: 08/25/2023] [Indexed: 09/07/2023]
Abstract
The performance of a pilot-scale boron-doped diamond (BDD) reactor through a numerical analysis of reaction rate parameters and enhanced mass transfer has been investigated. The main objective of this research is to evaluate the efficiency of the reactor in mineralizing and degrading caffeine as an emerging contaminant. Based on the kinetic mechanisms and mass transport correlations reported in the literature, two reaction rate kinetic models for caffeine degradation are proposed and analyzed. The models consider different electrolytes (NaCl and Na2SO4) and applied current densities. The kinetic fitting process utilizes the gradient-maximal electrochemical approach, together with orthogonal placement methods, fourth-order Runge-Kutta (RK4) methods, and Nelder & Mead methods for optimization of kinetic parameters and spatial discretization of the material balance. Experimental data obtained from a factorial design with four factors and two levels (24) validate the proposed kinetic models. Caffeine degradation is achieved with NaCl and Na2SO4 electrolytes at concentrations of 60 ppm and 100 ppm, respectively. The corresponding applied loads are 1.5 AhL-1 and 3 AhL-1. Na2SO4 exhibits superior performance with a total organic carbon (TOC) removal efficiency of 99.13%, while NaCl achieves 31.47% mineralization. The behavior of caffeine degradation under the operational and scale conditions demonstrates that NaCl, as a support electrolyte, enables controlled charge transfer (current density) during the degradation process. In contrast, Na2SO4 as a support electrolyte introduces a mixed control of charge and mass transfer. The pilot-scale kinetic parameters obtained in this study provide valuable insights into the support electrolyte dynamics and current density dynamics in BDD-based Electrooxidation (EO) systems, particularly in complex matrix applications. Furthermore, the observed electrical consumption supports the potential application of EO as a viable technology for industrial-scale tertiary wastewater treatment, specifically for caffeine removal.
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Affiliation(s)
- José Antonio Lara-Ramos
- Dismares- Biohidroingeniería, Km 6 vía Santa Marta-Riohacha, Colombia; Escuela de Ingeniería Química, Universidad del Valle, Santiago de Cali 760032, Colombia.
| | - Jennyfer Diaz-Angulo
- Investigación y Desarrollo Tecnológico en Tratamiento de Aguas, Modelado de Procesos y gestión de Residuos, GITAM A&S Consultoría y Suministros, Colombia.
| | - Edgar Mosquera-Vargas
- Departamento de Física, Universidad del Valle, Santiago de Cali 760032, Colombia; Centro de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, Santiago de Cali 760032, Colombia.
| | - Miguel A Mueses
- Photocatalysis and Solar Photoreactors Engineering, Modeling & Application of AOTs, Department of Chemical Engineering, Universidad de Cartagena, Cartagena, Colombia.
| | - Fiderman Machuca-Martínez
- Centro de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, Santiago de Cali 760032, Colombia; Escuela de Ingeniería Química, Universidad del Valle, Santiago de Cali 760032, Colombia.
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41
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Barazorda-Ccahuana HL, Fajardo AS, Dos Santos AJ, Lanza MRV. Decentralized approach toward organic pollutants removal using UV radiation in combination with H 2O 2-based electrochemical water technologies. CHEMOSPHERE 2023; 342:140079. [PMID: 37709061 DOI: 10.1016/j.chemosphere.2023.140079] [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: 06/28/2023] [Revised: 08/26/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023]
Abstract
The current literature lacks a comprehensive discussion on the trade-off between pollutant degradation/mineralization and treatment time costs in utilizing UV light in combination with H2O2-based electrochemical advanced oxidation processes (EAOPs). The present study sheds light on the benefits of using the photoelectro-Fenton (PEF) process with UVA or UVC for methylparaben (MetP) degradation in real drinking water. Although light boosts the photodegradation of refractory Fe(III) complexes and the photolysis of H2O2 (with UVC only), the energy-intensive nature of light-based treatments is acknowledged. To help tackle the high energy consumption issue, a novel approach was employed: partial application of UVA or UVC light after a predetermined electro-Fenton electrolysis time. The proposed treatment approach yielded satisfactory comparable results to those obtained from the application of PEF/UVA or PEF/UVC in terms of total organic carbon removal (ca. 100%), with notably lower energy consumption (ca. 50%). The study delves into the combined method's feasibility, analyzing pollutant degradation/mineralization process and overall energy consumption. The research identifies possible degradation routes based on intermediate detection and radical quenching experiments. Finally, toxicological assessments evaluate the toxicity levels of MetP and its intermediates. The findings of this study bring meaningful contributions to the fore and point to the highly promising potential of the proposed approach, in terms of sustainability and cost-effectiveness, when applied for decentralized water treatment.
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Affiliation(s)
- Haruna L Barazorda-Ccahuana
- Computational Biology and Chemistry Research Group, Catholic University of Santa María, Urb. San José s/n - Umacollo, Arequipa, 04000, Peru
| | - Ana S Fajardo
- Polytechnic Institute of Coimbra, Applied Research Institute, Rua Da Misericórdia, Lagar Dos Cortiços - S. Martinho Do Bispo, 3045-093 Coimbra, Portugal
| | - Alexsandro J Dos Santos
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil.
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil.
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Sanavi Fard M, Ehsani A, Soleimani F. Treatment of synthetic textile wastewater containing Acid Red 182 by electro-Peroxone process using RSM. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118379. [PMID: 37329582 DOI: 10.1016/j.jenvman.2023.118379] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/19/2023]
Abstract
The Azo dyes are primarily utilized in textile industries. Treatment of textile wastewater because of the presence of recalcitrant dyes using conventional processes is greatly challenging and ineffective. So far, no experimental work has been conducted on the decolorization of Acid Red 182 (AR182) in aqueous media. Hence, in this novel experimental work, the treatment of AR182 from the Azo dyes family was explored using the electro-Peroxone (EP) process. For the optimization of operating factors, including AR182 concentration, pH, applied current, and O3 flowrate in the decolorization of AR182, Central Composite Design (CCD) was utilized. The statistical optimization presented a highly satisfactory determination coefficient value and a satisfactory second-order model. The expected optimum conditions by the experimental design were as the following: AR182 concentration at 483.12 mg.L-1, applied current at 0.627,113 A, pH at 8.18284 and O3 flowrate at 1.13548 L min-1. The current density is directly proportional to dye removal. However, increasing the amount of applied current beyond a critical value has a contradictory impact on dye removal performance. The dye removal performance in both acidic and highly alkaline environments was negligible. Hence, ascertaining the optimum pH value and conduction of the experiment at that point is critical. At optimum points, the decolorization performance in predicted and experimental conditions for AR182 were 99 and 98.5%, respectively. The outcomes of this work clearly substantiated that the EP can be successfully utilized for the decolorization of AR182 in textile wastewater.
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Affiliation(s)
- Mahdi Sanavi Fard
- Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran.
| | - Ali Ehsani
- Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran
| | - Fariba Soleimani
- Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran
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43
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Wei J, Liu Y, Wu X. A cyclone reactor of electrochemical advanced oxidation processes using PbO 2 anode and H 2O 2 electrosynthesis cathode. WATER RESEARCH 2023; 245:120629. [PMID: 37717333 DOI: 10.1016/j.watres.2023.120629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/19/2023]
Abstract
Electrochemical advanced oxidation processes are promising tools for pollution abatement but most still lack practical engineering attempts and devices. A type of process intensification reactor for the electrochemical advanced oxidation processes is developed here. The cyclone continuous flow electrochemical reactor adopts a PbO2 anode and H2O2 electrosynthesis cathode together. A lab-scale cyclone continuous flow electrochemical reactor is fabricated and simulated, which is evaluated using the H-acid wastewater. The contributions of the PbO2 anode and H2O2 electrosynthesis cathode to pollutant degradation are discussed particularly. A 3-D model is developed to provide a visualized perspective on the reactor performances, including flow distribution, mass transfer, and current distribution. Pronounced signals of powerful radicals can be detected for the PbO2H2O2 cyclone reactor, including •OH, SO4•-, and 1O2. It exhibits excellent performances on mass transfer, electrical properties, organic degradation, and space-time yield. Such a strategy presents a promising engineering solution for scale-up and further development toward industrial application.
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Affiliation(s)
- Jucai Wei
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yun Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Hubei HuaDeLai (HDL) Co., Ltd, Wuhan 430023, PR China
| | - Xu Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Hubei HuaDeLai (HDL) Co., Ltd, Wuhan 430023, PR China.
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44
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Zhu X, Deng Y, Hu W, Chen H, Feng C, Chen N. Treatment of aniline-containing wastewater by electrochemical oxidation using Ti/RuO 2 anode: the influence of process parameters and reaction mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:109691-109701. [PMID: 37775639 DOI: 10.1007/s11356-023-29097-1] [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: 03/08/2023] [Accepted: 07/27/2023] [Indexed: 10/01/2023]
Abstract
Aniline detected in many industrial wastewater is a refractive organic pollutant with strong biological toxicity to aquatic organisms and humans. In this research, electrochemical oxidation process with Ti/RuO2 as the anode has been used to degrade aniline-containing wastewater on a laboratory scale. The influence of anode materials, electrolyte, NaCl concentration, current density, and aniline initial concentration on COD removal, ICE, and Ep were studied. The results showed that Cl- addition in the electrolyte is essential to promote aniline degradation efficiency and avoid the anode being passivated. Furthermore, decreasing the current density, increasing Cl- concentration, and initial aniline concentration are beneficial to increase current efficiency and reduce energy consumption. Although the addition of SO42- has a restriction on the active chlorine evolution process, the conductivity increased, which resulted in the reduction of energy consumption. At last, the aniline degradation mechanism in the presence of chloride ions was summed up and proposed based on the literature.
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Affiliation(s)
- Xu Zhu
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Yang Deng
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Weiwu Hu
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China.
- The Journal Center, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China.
| | - Hongyan Chen
- College of Science, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Nan Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
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45
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Ghaffarian Khorram A, Fallah N, Nasernejad B, Afsham N, Esmaelzadeh M, Vatanpour V. Electrochemical-based processes for produced water and oily wastewater treatment: A review. CHEMOSPHERE 2023; 338:139565. [PMID: 37482313 DOI: 10.1016/j.chemosphere.2023.139565] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
The greatest volume of by-products produced in oil and gas recovery operations is referred to as produced water and increasing environmental concerns and strict legislations on discharging it into the environment cause to more attention for focusing on degradation methods for treatment of produced water especially electrochemical technologies. This article provides an overview of electrochemical technologies for treating oily wastewater and produced water, including: electro-coagulation, electro-Fenton, electrochemical oxidation and electrochemical membrane reactor as a single stage and combination of these technologies as multi-stage treatment process. Many researchers have carried out experiments to examine the impact of various factors such as material (i.e, electrode material) and operational conditions (i.e., potential, current density, pH, electrode distance, and other factors) for organic elimination to obtain the high efficiency. Results of each method are reviewed and discussed according to these studies, comprehensively. Furthermore, several challenges need to be overcome and perspectives for future study are proposed for each method.
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Affiliation(s)
| | - Narges Fallah
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - Bahram Nasernejad
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Neda Afsham
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mahdi Esmaelzadeh
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Vahid Vatanpour
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, Tehran, Iran; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Turkey.
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46
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Li X, Ma S, Hu Y, Zhang C, Xiao C, Shi Y, Liu J, Cheng J, Chen Y. Degradation of norfloxacin in a heterogeneous electro-Fenton like system coupled with sodium chloride as the electrolyte. CHEMICAL ENGINEERING JOURNAL 2023; 473:145202. [DOI: 10.1016/j.cej.2023.145202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
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47
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Simon S, Suresh BK, Anantha-Singh TS. A sequential aerated electrocoagulation and peroxicoagulation process for the treatment of municipal stabilized landfill leachate by iron and graphite electrodes. CHEMOSPHERE 2023; 339:139692. [PMID: 37543228 DOI: 10.1016/j.chemosphere.2023.139692] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/24/2023] [Accepted: 07/30/2023] [Indexed: 08/07/2023]
Abstract
Electrochemical treatment has emerged as a viable technology for the treatment of leachate due to its efficient removal of ammonaical nitrogen and other recalcitrant organics. The main technical issues that prevent its practical deployment are restricted performance of a single electrochemical process and the lengthy tertiary treatment time required to achieve the disposal quality standards. This study demonstrates the performance of electrochemical treatments such as peroxicoagulation (PC) and aerated electrocoagulation (A-EC) separately and also sequentially for the treatment of stabilized leachate. In aerated electro coagulation iron is used as both anode and cathode, whereas in peroxicoagulation, iron is used as anode and graphite as cathode. The area of electrode used for treatments was fixed as 12.5 cm2. The initial concentration of NH4-N, TN, COD, and TOC of the leachate was found to be 480 mg/L, 997 mg/L, 40,200 mg/L, and 9850 mg/L respectively. Removal efficiency of aerated electrocoagulation for NH4-N, TN, COD and TOC were 25.6%, 23.67%, 25.6% and 28.7% respectively, current density of 30 mAcm-2, electrolysis time of 60 min and pH 7.3. Meanwhile for peroxicoagulation, the removal efficiency was found to be 37.2%, 43%, 37.3%, and 45.6% for NH4-N, TN, COD, and TOC respectively, at an current density of 30 mAcm-2, electrolysis time of 120 min and a pH of 3. The sequential aerated electrocoagulation - peroxicoagulation process achieves a maximum removal efficiency of 63%, 68%, 78%, and 75% for NH4-N, total nitrogen, COD, and TOC respectively for a reaction time of 180 min. Removal of NH4-N, total nitrogen, COD and TOC from stabilized landfill leachate with a BOD/COD ratio less than 0.1 was very much effective with the sequential aerated electrocoagulation - peroxicoagulaton treatment. The results also indicate that for the treatment of leachate, a significant synergistic index of 1.22 exists between aerated electrocoagulation and peroxicoagulation.
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Affiliation(s)
- Saji Simon
- Department of Civil Engineering, National Institute of Technology Calicut, India.
| | - Bibin K Suresh
- Department of Civil Engineering, National Institute of Technology Calicut, India.
| | - T S Anantha-Singh
- Department of Civil Engineering, National Institute of Technology Calicut, India.
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48
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Yu J, Zhu Z, Hu W, Deng Y, Feng C, Chen N. Research on the electrochemical treatment of nitrobenzene wastewater: The effects of process parameters and the mechanism of distinct degradation pathways. CHEMOSPHERE 2023; 338:139408. [PMID: 37419153 DOI: 10.1016/j.chemosphere.2023.139408] [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: 05/12/2023] [Revised: 06/28/2023] [Accepted: 07/01/2023] [Indexed: 07/09/2023]
Abstract
Nitrobenzene is a typical organic pollutant of petroleum pollutant, which is a synthetic chemical not found naturally in the environment. Nitrobenzene in environment can cause toxic liver disease and respiratory failure in humans. Electrochemical technology provides an effective and efficient method for degrading nitrobenzene. This study, the effects of process parameter (e.g., electrolyte solution type, electrolyte concentration, current density and pH) and distinct reaction pathways for electrochemical treatment of nitrobenzene were investigated. As a result, available chlorine dominates the electrochemical oxidation process compared with hydroxyl radical, thus the electrolyte of NaCl is more suitable for the degradation of nitrobenzene than that of Na2SO4. The concentration and the existence form of available chlorine were mainly controlled by electrolyte concentration, current density and pH, which directly affect the removal of nitrobenzene. Cyclic voltammetry and mass spectrometric analyses suggested that electrochemical degradation of nitrobenzene included two important ways. Firstly, single oxidation: nitrobenzene → other forms of aromatic compounds→ NO-x + organic acids + mineralization products. Secondly, coordination of reduction and oxidation: nitrobenzene → aniline→ N2 + NO-x + organic acid + mineralization products. The results of this study will encourage us to further understand the electrochemical degradation mechanism of nitrobenzene and develop the efficient processes for nitrobenzene treatment.
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Affiliation(s)
- Jie Yu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Zipeng Zhu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Weiwu Hu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Yang Deng
- Department of Environmental Engineering, College of Environmental Science and Engineering, Peking University, Beijing, 100871, China
| | - Chuanping Feng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Nan Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
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49
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Lozano I, Cervantes-Aviles P, Keller A, Aguilar CL. Removal of pharmaceuticals and personal care products from wastewater via anodic oxidation and electro-Fenton processes: current status and needs regarding their application. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:1143-1154. [PMID: 37771219 PMCID: wst_2023_266 DOI: 10.2166/wst.2023.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
This review provides a current opinion on the most recent works that have been published toward the application of electrochemical advance oxidation processes (EAOPs) for the degradation of pharmaceutical and personal care products (PPCPs) in water streams. Advances in the application of anodic oxidation (AO)- and electro-Fenton (EF)-based processes are reported, including operational conditions, electrode performance, and removal. Although AO- and EF-based processes can easily reach 100% removal of PPCPs, mineralization is desirable to avoid the generation of potential toxic byproducts. The following section exploring some techno-economic aspects of the application of EAOPs is based on electrode selection, operational costs as well as their use as cotreatments, and their synergistic effects. Finally, this short review ends with perspectives about the emerging topics that are faced by these technologies applied for the degradation of PPCPs in research and practice.
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Affiliation(s)
- Iván Lozano
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Puebla, Vía Atlixcáyotl 5718, Reserva Territorial Atlixcáyotl, Puebla, Puebla 72453, México E-mail: ;
| | - Pabel Cervantes-Aviles
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Puebla, Vía Atlixcáyotl 5718, Reserva Territorial Atlixcáyotl, Puebla, Puebla 72453, México; University of California, Center for Environmental Implications of Nanotechnology, Santa Barbara, CA, USA 93106
| | - Arturo Keller
- University of California, Center for Environmental Implications of Nanotechnology, Santa Barbara, CA, USA 93106; Bren School of Environmental Science and Management, University of California at Santa Barbara, CA, USA 93106
| | - Claudia López Aguilar
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Av. San Claudio, Ciudad Universitaria, Puebla 72570, México
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50
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Zheng G, Fu P, Li Z, Zhang Y, Huang X, Chen J. Degradation performance of methylene blue in metal nanoparticle modified 3D mesoporous wood microchannels. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:95425-95437. [PMID: 37550480 DOI: 10.1007/s11356-023-29137-w] [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: 04/21/2023] [Accepted: 07/30/2023] [Indexed: 08/09/2023]
Abstract
Wood has a rich three-dimensional pore structure and many bottom-up nanochannels. However, the structure of wood itself has limited ability to adsorb dyes, so the effective combination of the unique structure of wood and Pd NPs was studied to achieve efficient degradation of dyes. First, the three-dimensional structure of natural wood is optimized by combining the complex pore structure of wood with Pd NPs to improve the contact process between the dye and Pd NPs. Then, Pd (II) ion can be well reduced to Pd NPs by wood lignin. In addition, Pd NPs can be fixed by hydroxyl groups on cellulose in wood. The flow state inside Pd NPs/wood film and the contact area between catalyst and dye were discussed in detail by hydrodynamic simulation, which filled the gap. It provides reference for composite structure. When Pd NPs/wood membrane was used to treat methylene blue (MB), the degradation efficiency was up to 96.7%, which was 90% higher than that of natural wood. Its TOF value was 1.82 molMB molPd-1min-1, which was higher than that in the previous literature. Therefore, the novelty of this study is that the mechanism of catalytic degradation of MB by Pd nanoparticles/wood composites is reported for the first time. The internal flow mode and contact condition of the new material are understood, which has a good application prospect.
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Affiliation(s)
- Guanfeng Zheng
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China
| | - Peng Fu
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China.
| | - Zhiyu Li
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China
| | - Yuchun Zhang
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China
| | - Xinfeng Huang
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China
| | - Jieming Chen
- College of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo, 255000, Shandong, China
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