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Electrochemical advanced oxidation processes (EAOPs) as alternative treatment techniques for carwash wastewater reclamation.
Chemosphere. 2018 Nov; 211:998-1006.C

Abstract

Electrochemical advanced oxidation processes such as electrooxidation (EO), electrooxidation with hydrogen peroxide generation (EO-H2O2) and electro-Fenton process (EF) have been investigated as alternative treatment techniques for complete removal of anionic surfactants and organic matters from real carwash wastewater. The electrochemical processes were performed with acidified real carwash wastewater using boron doped anode and carbon felt cathode. In all cases, the chemical oxygen demand (COD) removal efficiency was always increased with rise in applied current and complete organic matter decay was achieved at applied current of 500 mA or above after 6 h of electrolysis. Faster and higher COD decay was observed with EF compared to either EO or EO-H2O2 treatment, at all currents and electrolysis time. Besides, complete degradation of anionic surfactants - the major organic content of the wastewater could be achieved at all applied currents studied irrespective of the process used, indicating the efficacy of processes for total remediation of real carwash wastewater. The short-chain carboxylic acids formed as the final organic byproducts were identified and quantified by ion-exclusion chromatography. More so, lower energy consumption and higher current efficiency were achieved with EF compared to EO-H2O2. Electrochemical treatment was found to be a powerful technology for the complete abatement of organic matter in carwash wastewater for possible reuse.

Authors+Show Affiliations

Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil. Electronic address: oladejosoliu@gmail.com.Science and TechnologySchool, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil.Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil.Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, 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. Electronic address: carlosmh@quimica.ufrn.br.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30119031

Citation

Ganiyu, Soliu O., et al. "Electrochemical Advanced Oxidation Processes (EAOPs) as Alternative Treatment Techniques for Carwash Wastewater Reclamation." Chemosphere, vol. 211, 2018, pp. 998-1006.
Ganiyu SO, Vieira Dos Santos E, Tossi de Araújo Costa EC, et al. Electrochemical advanced oxidation processes (EAOPs) as alternative treatment techniques for carwash wastewater reclamation. Chemosphere. 2018;211:998-1006.
Ganiyu, S. O., Vieira Dos Santos, E., Tossi de Araújo Costa, E. C., & Martínez-Huitle, C. A. (2018). Electrochemical advanced oxidation processes (EAOPs) as alternative treatment techniques for carwash wastewater reclamation. Chemosphere, 211, 998-1006. https://doi.org/10.1016/j.chemosphere.2018.08.044
Ganiyu SO, et al. Electrochemical Advanced Oxidation Processes (EAOPs) as Alternative Treatment Techniques for Carwash Wastewater Reclamation. Chemosphere. 2018;211:998-1006. PubMed PMID: 30119031.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical advanced oxidation processes (EAOPs) as alternative treatment techniques for carwash wastewater reclamation. AU - Ganiyu,Soliu O, AU - Vieira Dos Santos,Elisama, AU - Tossi de Araújo Costa,Emily Cintia, AU - Martínez-Huitle,Carlos A, Y1 - 2018/08/11/ PY - 2018/05/27/received PY - 2018/08/08/revised PY - 2018/08/09/accepted PY - 2018/8/18/pubmed PY - 2018/10/23/medline PY - 2018/8/18/entrez KW - Anionic surfactants KW - Carwash wastewater KW - Electro-Fenton KW - Electrochemical advanced oxidation processes KW - Electrooxidation KW - Organic matter SP - 998 EP - 1006 JF - Chemosphere JO - Chemosphere VL - 211 N2 - Electrochemical advanced oxidation processes such as electrooxidation (EO), electrooxidation with hydrogen peroxide generation (EO-H2O2) and electro-Fenton process (EF) have been investigated as alternative treatment techniques for complete removal of anionic surfactants and organic matters from real carwash wastewater. The electrochemical processes were performed with acidified real carwash wastewater using boron doped anode and carbon felt cathode. In all cases, the chemical oxygen demand (COD) removal efficiency was always increased with rise in applied current and complete organic matter decay was achieved at applied current of 500 mA or above after 6 h of electrolysis. Faster and higher COD decay was observed with EF compared to either EO or EO-H2O2 treatment, at all currents and electrolysis time. Besides, complete degradation of anionic surfactants - the major organic content of the wastewater could be achieved at all applied currents studied irrespective of the process used, indicating the efficacy of processes for total remediation of real carwash wastewater. The short-chain carboxylic acids formed as the final organic byproducts were identified and quantified by ion-exclusion chromatography. More so, lower energy consumption and higher current efficiency were achieved with EF compared to EO-H2O2. Electrochemical treatment was found to be a powerful technology for the complete abatement of organic matter in carwash wastewater for possible reuse. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30119031/Electrochemical_advanced_oxidation_processes__EAOPs__as_alternative_treatment_techniques_for_carwash_wastewater_reclamation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(18)31519-4 DB - PRIME DP - Unbound Medicine ER -