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Kong Q, Zhang H, Lan Y, Shi X, Fang Z, Chang Q, Liu J, Wei C. Functional graphene oxide for organic pollutants removal from wastewater: a mini review. ENVIRONMENTAL TECHNOLOGY 2023; 44:3183-3195. [PMID: 35286239 DOI: 10.1080/09593330.2022.2053754] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Graphene oxide (GO), an important derivative of graphene, with a variety of active oxygen-containing groups (hydroxyl, carboxyl and epoxy) on its surface is easy to be functionalized to obtain adsorbent with high adsorption capacity. To date, the adsorption behaviour of organic pollutants by functionalized GO adsorbents have been extensively studied, but there has been no systematic review regarding the functionalization method of GO for the purpose to remove organic pollutants from wastewater. The leading objective of this review is to (i) summarize the functionalization strategies of GO for organic pollutants removal (covalent functionalization and non-covalent functionalization), (ii) evaluate the adsorption performance of functional GO towards organic pollutants by taking aromatic pollutants and dyes as examples and (iii) discuss the regeneration property and adsorption mechanism of functional GO adsorbent. In addition, the problems of existing studies and future research directions are also identified briefly.
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Affiliation(s)
- Qiaoping Kong
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Hongzheng Zhang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Yunlong Lan
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Xueqing Shi
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Zilong Fang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Qi Chang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Jun Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
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2
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Modelling and optimization of psychoactive pharmaceutical caffeine removal by electrochemical oxidation process: A comparative study between response surface methodology (RSM) and adaptive neuro fuzzy inference system (ANFIS). Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Raj R, Tripathi A, Das S, Ghangrekar M. Removal of caffeine from wastewater using electrochemical advanced oxidation process: A mini review. CASE STUDIES IN CHEMICAL AND ENVIRONMENTAL ENGINEERING 2021. [DOI: 10.1016/j.cscee.2021.100129] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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4
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Navarro-Franco JA, Garzón-Zúñiga MA, Drogui P, Buelna G, Gortares-Moroyoqui P, Barragán-Huerta BE, Vigueras-Cortés JM. Electro-Oxidation in Combination with Biological Processes for Removal of Persistent Pollutants in Wastewater: A Review. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2020.01746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Rao Y, Long H, Hao J. The oxidative degradation of Caffeine in UV/Fe(II)/persulfate system-Reaction kinetics and decay pathways. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:559-569. [PMID: 32946166 DOI: 10.1002/wer.1458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/14/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
In this study, the degradation of caffeine was investigated by UV/Fe2+ /persulfate (PS) process. Caffeine (CAF) degradation in sole-UV, UV/Fe2+ , UV/PS, and Fe2+ /PS systems was also conducted to examine the contribution of isolated processes to CAF degradation. The effects of pH levels, the concentration of Fe2+ and PS, inorganic anions, and initial concentration of CAF on the performance of UV/Fe2+ /PS process were evaluated. Radical competitive reactions indicated both hydroxyl radicals and sulfate radicals played important roles in CAF degradation in UV/Fe2+ /PS system. Nine intermediates, among which three were detected for the first time, were identified by ultra-performance liquid chromatography/electrospray-time-of-flight mass spectrometry (UPLC/ESI-TOF-MS) and SPME (solid-phase microextraction)/GC/MS. The possible degradation pathways of CAF were proposed, among which demethylation, hydroxylation, the oxidation of olefinic double bond, and the cleavage of pyrimidine ring and imidazole ring were involved in the degradation of CAF in UV/Fe2+ /PS system. PRACTITIONER POINTS: Caffeine degradation by UV/Fe2+ /PS process was investigated. Caffeine degradation did not follow a simple pseudo-first order kinetics Chloride ions promoted CAF degradation. The anions NO3 - , SO4 2- , and H2 PO4 - exerted a negative influence on caffeine degradation. Nine intermediates were detected, and decay pathways were proposed.
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Affiliation(s)
- Yongfang Rao
- Department of Environmental Science and Engineering, Xi' an Jiaotong University, Xi'an, China
| | - Huimin Long
- Department of Environmental Science and Engineering, Xi' an Jiaotong University, Xi'an, China
| | - Jingchen Hao
- Department of Environmental Science and Engineering, Xi' an Jiaotong University, Xi'an, China
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6
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Martín de Vidales MJ, Rua J, Montero de Juan JL, Fernández-Martínez F, Dos santos-García AJ. Degradation of Contaminants of Emerging Concern by Electrochemical Oxidation: Coupling of Ultraviolet and Ultrasound Radiations. MATERIALS 2020; 13:ma13235551. [PMID: 33291437 PMCID: PMC7730255 DOI: 10.3390/ma13235551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/29/2020] [Accepted: 12/02/2020] [Indexed: 11/24/2022]
Abstract
In this work, we study the electrochemical oxidation of methyl red, a dye present in textile industrial effluents, which is selected as the model for the degradation of Contaminants of Emerging Concern. The influence of the initial pollutant concentration (1–5 mg dm−3), applied current density (2–15 mA cm−2), and the coupling of ultraviolet or ultrasound radiation have been studied using a titanium plate as anode. The results show that electrochemical oxidation is able to efficiently remove methyl red, and the process efficiency decreases with the initial pollutant concentration. At high applied current densities, efficiency drastically decreases due to a less effective mass transfer of the pollutant on the anodic surface. On one hand, the coupling of ultrasound entails an antagonistic effect on the process efficiency, which is probably due to a massive formation of oxidant radicals followed by a fast recombination process. On the other hand, the coupling of ultraviolet radiation increases the process efficiency. Concomitantly to the oxidation processes, titanium electrode produces rising TiO2–anatase nanoparticles, boosting the mineralization process. This new finding sets up a significant improvement over conventional photocatalysis treatments using TiO2–anatase as a catalyst due to synergistic effects coming from the coupling of the electrochemical oxidation and photocatalysis process with Ti anode.
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Li H, Kuang X, Qiu C, Shen X, Zhang B, Li H. Advanced electrochemical treatment of real biotreated petrochemical wastewater by boron doped diamond anode: performance, kinetics, and degradation mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:773-786. [PMID: 32970628 DOI: 10.2166/wst.2020.387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Petrochemical wastewater is difficult to process because of various types of pollutants with high toxicity. With the improvement in the national discharge standard, traditional biochemical treatment methods may not meet the standards and further advanced treatment techniques would be required. In this study, electrochemical oxidation with boron doped diamond (BDD) anode as post-treatment was carried out for the treatment of real biotreated petrochemical wastewater. The effects of current density, pH value, agitation rate, and anode materials on chemical oxygen demand (COD) removal and current efficiency were studied. The results revealed the appropriate conditions to be a current density of 10 mA·cm-2, a pH value of 3, and an agitation rate of 400 rpm. Moreover, as compared with the graphite electrode, the BDD electrode had a higher oxidation efficiency and COD removal efficiency. Furthermore, GC-MS was used to analyze the final degradation products, in which ammonium chloride, formic acid, acetic acid, and malonic acid were detected. Finally, the energy consumption was estimated to be 6.24 kWh·m-3 with a final COD of 30.2 mg·L-1 at a current density of 10 mA·cm-2 without the addition of extra substances. This study provides an alternative for the upgrading of petrochemical wastewater treatment plants.
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Affiliation(s)
- Hao Li
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo 315800, China E-mail:
| | - Xinmou Kuang
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo 315800, China E-mail:
| | - Congping Qiu
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo 315800, China E-mail:
| | - Xiaolan Shen
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo 315800, China E-mail:
| | - Botao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China and Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Hua Li
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China and Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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8
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Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems. WATER 2020. [DOI: 10.3390/w12041043] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Due to various potential toxicological threats to living organisms even at low concentrations, pharmaceuticals and personal care products in natural water are seen as an emerging environmental issue. The low efficiency of removal of pharmaceuticals and personal care products by conventional wastewater treatment plants calls for more efficient technology. Research on advanced oxidation processes has recently become a hot topic as it has been shown that these technologies can effectively oxidize most organic contaminants to inorganic carbon through mineralization. Among the advanced oxidation processes, the electrochemical advanced oxidation processes and, in general, electrochemical oxidation or anodic oxidation have shown good prospects at the lab-scale for the elimination of contamination caused by the presence of residual pharmaceuticals and personal care products in aqueous systems. This paper reviewed the effectiveness of electrochemical oxidation in removing pharmaceuticals and personal care products from liquid solutions, alone or in combination with other treatment processes, in the last 10 years. Reactor designs and configurations, electrode materials, operational factors (initial concentration, supporting electrolytes, current density, temperature, pH, stirring rate, electrode spacing, and fluid velocity) were also investigated.
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9
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de Oliveira Marcionilio SML, Crisafulli R, Medeiros GA, de Sousa Tonhá M, Garnier J, Neto BAD, Linares JJ. Influence of hydrodynamic conditions on the degradation of 1-butyl-3-methylimidazolium chloride solutions on boron-doped diamond anodes. CHEMOSPHERE 2019; 224:343-350. [PMID: 30826704 DOI: 10.1016/j.chemosphere.2019.02.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
This study assessed the influence of hydrodynamic conditions on the degradation process of 1-butyl-3-methylimidazolium chloride (BMImCl) solution on a boron-doped diamond anode in a filter-type electrochemical reactor configuration. The results show that this parameter did not significantly affect this process when operating in the laminar regime. However, in the transition regime (Re ≥ 2000), higher flow rates resulted in a faster removal of BMImCl and total organic carbon, making the process more efficient. Following BMImCl degradation, nitrates were generated at the cathode, then reduced at the cathode to ammonium; combination with free chloride produced at the anode led to the transformation of chloride into combined chlorine forms instead of more toxic oxianions such as chlorate and perchlorate. Thus, the flow rate can be a key parameter for defining operating conditions in which the target BMImCl is more effectively degraded with reduced generation of undesirable secondary products.
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Affiliation(s)
| | - Rudy Crisafulli
- Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Gisele A Medeiros
- Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Myller de Sousa Tonhá
- Laboratório de Geoquímica, Instituto de Geociências, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Jeremie Garnier
- Laboratório de Geoquímica, Instituto de Geociências, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Brenno A D Neto
- Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - José J Linares
- Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil.
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He Y, Lin H, Guo Z, Zhang W, Li H, Huang W. Recent developments and advances in boron-doped diamond electrodes for electrochemical oxidation of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.056] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Rizzo L, Malato S, Antakyali D, Beretsou VG, Đolić MB, Gernjak W, Heath E, Ivancev-Tumbas I, Karaolia P, Lado Ribeiro AR, Mascolo G, McArdell CS, Schaar H, Silva AMT, Fatta-Kassinos D. Consolidated vs new advanced treatment methods for the removal of contaminants of emerging concern from urban wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 655:986-1008. [PMID: 30577146 DOI: 10.1016/j.scitotenv.2018.11.265] [Citation(s) in RCA: 310] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/21/2018] [Accepted: 11/17/2018] [Indexed: 05/02/2023]
Abstract
Urban wastewater treatment plants (WWTPs) are among the main anthropogenic sources for the release of contaminants of emerging concern (CECs) into the environment, which can result in toxic and adverse effects on aquatic organisms and consequently on humans. Unfortunately, WWTPs are not designed to remove CECs and secondary (e.g., conventional activated sludge process, CAS) and tertiary (such as filtration and disinfection) treatments are not effective in the removal of most CECs entering WWTP. Accordingly, several advanced treatment methods have been investigated for the removal of CECs from wastewater, including consolidated (namely, activated carbon (AC) adsorption, ozonation and membranes) and new (such as advanced oxidation processes (AOPs)) processes/technologies. This review paper gathers the efforts of a group of international experts, members of the NEREUS COST Action ES1403 who for three years have been constructively discussing the state of the art and the best available technologies for the advanced treatment of urban wastewater. In particular, this work critically reviews the papers available in scientific literature on consolidated (ozonation, AC and membranes) and new advanced treatment methods (mainly AOPs) to analyse: (i) their efficiency in the removal of CECs from wastewater, (ii) advantages and drawbacks, (iii) possible obstacles to the application of AOPs, (iv) technological limitations and mid to long-term perspectives for the application of heterogeneous processes, and (v) a technical and economic comparison among the different processes/technologies.
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Affiliation(s)
- Luigi Rizzo
- Department of Civil Engineering, University of Salerno, 84084 Fisciano, SA, Italy.
| | - Sixto Malato
- Plataforma Solar de Almería (CIEMAT), Carretera de Senés, km. 4, Tabernas, Almería 04200, Spain.
| | - Demet Antakyali
- Competence Centre Micropollutants, NRW, D-50823 Cologne, Germany
| | - Vasiliki G Beretsou
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus; Department of Civil and Environmental Engineering, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Maja B Đolić
- Vinča Institute of Nuclear Sciences, University of Belgrade, 522 P.O. Box, Serbia
| | - Wolfgang Gernjak
- Catalan Institute for Water Research (ICRA), Emili Grahit 101, 17003 Girona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Ester Heath
- Jožef Stefan Institute and International Postgraduate School Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia
| | - Ivana Ivancev-Tumbas
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića, 21000 Novi Sad, Serbia
| | - Popi Karaolia
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Ana R Lado Ribeiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - Giuseppe Mascolo
- CNR, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, 70132 Bari, Italy
| | - Christa S McArdell
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Heidemarie Schaar
- Institute for Water Quality and Resource Management, Technische Universität Wien, Karlsplatz 13/2261, 1040 Vienna, Austria
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - Despo Fatta-Kassinos
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus; Department of Civil and Environmental Engineering, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
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Martín de Vidales MJ, Castro MP, Sáez C, Cañizares P, Rodrigo MA. Radiation-assisted electrochemical processes in semi-pilot scale for the removal of clopyralid from soil washing wastes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.04.074] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Periyasamy S, Muthuchamy M. Electrochemical degradation of psychoactive drug caffeine in aqueous solution using graphite electrode. ENVIRONMENTAL TECHNOLOGY 2018; 39:2373-2381. [PMID: 28705089 DOI: 10.1080/09593330.2017.1355932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
In this study, the electrochemical degradation of caffeine (1,3,7-trimethylxanthine) in aqueous solution by a graphite electrode was investigated. Electrochemical degradation was tested by the cyclic voltametry technique performed in the potential range of -1.0 to +1.0 V versus Ag/AgCl, which confirmed the electro-activity of the selected caffeine. The effects of the treatment process variables, such as initial pH, current density, electrolyte concentration and electrolysis time on the degradation of caffeine, were explored. During the various stages of electrolysis, parameters such as chemical oxygen demand (COD), total organic carbon (TOC) were analysed. The maximum COD and TOC removal efficiencies of 85% and 77% were achieved at neutral pH 7, operated at a current density of 5.1 mA/cm2, electrolyte (Na2SO4) concentration of 0.1 M and at 240 min electrolysis time. From this study, it can be concluded that the electrochemical treatment process could effectively reduce the COD and TOC from the caffeine in aqueous medium. The degradation of the caffeine was confirmed by UV spectra, IR spectra and HPLC analysis.
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Affiliation(s)
- Selvendiran Periyasamy
- a Environmental Engineering and Technology Laboratory, Department of Environmental Sciences , Bharathiar University , Coimbatore , India
| | - Muthukumar Muthuchamy
- a Environmental Engineering and Technology Laboratory, Department of Environmental Sciences , Bharathiar University , Coimbatore , India
- b Department of Environmental Science , Central University of Kerala , Kasaragod , India
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Cotillas S, Llanos J, Cañizares P, Clematis D, Cerisola G, Rodrigo MA, Panizza M. Removal of Procion Red MX-5B dye from wastewater by conductive-diamond electrochemical oxidation. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.01.052] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Cotillas S, Cañizares L, Muñoz M, Sáez C, Cañizares P, Rodrigo MA. Is it really important the addition of salts for the electrolysis of soil washing effluents? Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Frontistis Z, Antonopoulou M, Yazirdagi M, Kilinc Z, Konstantinou I, Katsaounis A, Mantzavinos D. Boron-doped diamond electrooxidation of ethyl paraben: The effect of electrolyte on by-products distribution and mechanisms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 195:148-156. [PMID: 27377865 DOI: 10.1016/j.jenvman.2016.06.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/13/2016] [Accepted: 06/23/2016] [Indexed: 06/06/2023]
Abstract
Ethyl paraben (EP), a representative emerging pollutant of the parabens family, was subject to electrochemical oxidation over a boron-doped diamond (BDD) anode. Experiments were carried out in a single-compartment cell at 10-70 mA cm-2 current density, 200-600 μg L-1 EP concentration, initial solution pH 3-9 and 0.1 M electrolyte concentration. The degradation rate is favored at increased current densities and in the presence of NaCl as the supporting electrolyte, while the pH effect is inconsiderable. For instance, the first order rate constant for the degradation of 200 μg L-1 EP at 30 mA cm-2 was 0.25, 0.1 and 0.07 min-1 with NaCl, Na2SO4 and HClO4, respectively. Degradation in secondary treated wastewater was faster than in pure water presumably due to the action of chloride ions present in the effluent. Liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS) was employed to determine major transformation by-products (TBPs). The route of EP degradation with Na2SO4 involves hydroxylation and demethylation reactions, signifying the role of electrogenerated hydroxyl radicals in the process. Twenty one TBPs were identified with NaCl as the electrolyte, including several chlorinated and non-chlorinated dimers and trimers; these findings suggest that indirect oxidation mediated by chlorine radicals and other chlorine active species also takes place. In this view, the role of the supporting electrolyte is crucial since it can influence both reaction kinetics and pathways.
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Affiliation(s)
- Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Maria Antonopoulou
- Department of Environmental & Natural Resources Management, University of Patras, 2 Seferi St., GR-30100 Agrinio, Greece
| | - Melis Yazirdagi
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Zeynep Kilinc
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | | | - Alexandros Katsaounis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece.
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
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Martín de Vidales MJ, Millán M, Sáez C, Cañizares P, Rodrigo MA. Irradiated-assisted electrochemical processes for the removal of persistent pollutants from real wastewater. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Coledam DAC, Pupo MMS, Silva BF, Silva AJ, Eguiluz KIB, Salazar-Banda GR, Aquino JM. Electrochemical mineralization of cephalexin using a conductive diamond anode: A mechanistic and toxicity investigation. CHEMOSPHERE 2017; 168:638-647. [PMID: 27847122 DOI: 10.1016/j.chemosphere.2016.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 05/21/2023]
Abstract
The contamination of surface and ground water by antibiotics is of significant importance due to their potential chronic toxic effects to the aquatic and human lives. Thus, in this work, the electrochemical oxidation of cephalexin (CEX) was carried out in a one compartment filter-press flow cell using a boron-doped diamond (BDD) electrode as anode. During the electrolysis, the investigated variables were: supporting electrolyte (Na2SO4, NaCl, NaNO3, and Na2CO3) at constant ionic strength (0.1 M), pH (3, 7, 10, and without control), and current density (5, 10 and 20 mA cm-2). The oxidation and mineralization of CEX were assessed by high performance liquid chromatography, coupled to mass spectrometry and total organic carbon. The oxidation process of CEX was dependent on the type of electrolyte and on pH of the solution due to the distinct oxidant species electrogenerated; however, the conversion of CEX and its hydroxylated intermediates to CO2 depends only on their diffusion to the surface of the BDD. In the final stages of electrolysis, an accumulation of recalcitrant oxamic and oxalic carboxylic acids, was detected. Finally, the growth inhibition assay with Escherichia coli cells showed that the toxicity of CEX solution decreased along the electrochemical treatment due to the rupture of the β-lactam ring of the antibiotic.
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Affiliation(s)
- Douglas A C Coledam
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil
| | - Marília M S Pupo
- Instituto de Tecnologia e Pesquisa/Programa de Pós-graduação em Engenharia de Processos, Universidade Tiradentes, 49032-490 Aracaju, SE, Brazil
| | - Bianca F Silva
- Instituto de Química de Araraquara, Departamento de Química Analítica, Universidade Estadual Paulista, 14800-900 Araraquara, SP, Brazil
| | - Adilson J Silva
- Departamento de Engenharia Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil
| | - Katlin I B Eguiluz
- Instituto de Tecnologia e Pesquisa/Programa de Pós-graduação em Engenharia de Processos, Universidade Tiradentes, 49032-490 Aracaju, SE, Brazil
| | - Giancarlo R Salazar-Banda
- Instituto de Tecnologia e Pesquisa/Programa de Pós-graduação em Engenharia de Processos, Universidade Tiradentes, 49032-490 Aracaju, SE, Brazil
| | - José M Aquino
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil.
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Steter JR, Brillas E, Sirés I. On the selection of the anode material for the electrochemical removal of methylparaben from different aqueous media. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.125] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Marcionilio SMLDO, Alves GM, E Silva RBG, Marques PJL, Maia PD, Neto BAD, Linares JJ. Influence of the current density on the electrochemical treatment of concentrated 1-butyl-3-methylimidazolium chloride solutions on diamond electrodes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:19084-19095. [PMID: 27343078 DOI: 10.1007/s11356-016-7105-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/16/2016] [Indexed: 06/06/2023]
Abstract
This paper focuses on the influence of the current density treatment of a concentrated 1-butyl-3-methylimidazolium chloride (BMImCl) solution on an electrochemical reactor with a boron-doped diamond (BDD) anode. The decrease in the total organic carbon (TOC) and the BMImCl concentration demonstrate the capability of BDD in oxidizing ionic liquids (ILs) and further mineralizing (to CO2 and NO3 (-)) more rapidly at higher current densities in spite of the reduced current efficiency of the process. Moreover, the presence of Cl(-) led to the formation of oxychlorinated anions (mostly ClO3 (-) and ClO4 (-)) and, in combination with the ammonia generated in the cathode from the nitrate reduction, chloramines, more intensely at higher current density. Finally, the analysis of the intermediates formed revealed no apparent influence of the current density on the BMImCl degradation mechanism. The current density presents therefore a complex influence on the IL treatment process that is discussed throughout this paper.
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Affiliation(s)
| | - Gisele M Alves
- Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro CP 4478, 70910-900, Brasília, DF, Brazil
| | - Rachel B Góes E Silva
- Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro CP 4478, 70910-900, Brasília, DF, Brazil
| | - Pablo J Lima Marques
- Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro CP 4478, 70910-900, Brasília, DF, Brazil
| | - Poliana D Maia
- Faculdade UnB Planaltina, Universidade de Brasília, Área Universitária n. 1- Vila Nossa Senhora de Fátima, Planaltina, 73300-000, Brasília, DF, Brazil
| | - Brenno A D Neto
- Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro CP 4478, 70910-900, Brasília, DF, Brazil
| | - José J Linares
- Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro CP 4478, 70910-900, Brasília, DF, Brazil.
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Martin de Vidales MJ, Millán M, Sáez C, Cañizares P, Rodrigo MA. What happens to inorganic nitrogen species during conductive diamond electrochemical oxidation of real wastewater? Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.03.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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22
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UVA- and visible-light-driven photocatalytic activity of three-layer perovskite Dion-Jacobson phase CsBa2M3O10 (M=Ta, Nb) and oxynitride crystals in the removal of caffeine from model wastewater. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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