Effect of electrochemically-driven technologies on the treatment of endocrine disruptors in synthetic and real urban wastewater

Autor(es)

dos Santos, Alexsandro J. ^[1] ; Fajardo, Ana S. ^{[2, 3]} ; Kronka, Matheus S. ^[1] ; Garcia-Segura, Sergi ^[2] ; Lanza, V, Marcos R.

Afiliação do(s) autor(es)

^[1] V, Univ Sao Paulo, Sao Carlos Inst Chem, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

^[2] Arizona State Univ, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 - USA

^[3] Sorbonne Univ, Lab Interfaces & Syst Electrochim LISE, CNRS, 4 Pl Jussieu, F-75005 Paris - France

• Tipo de documento: Artigo Científico
• Fonte: Electrochimica Acta; v. 376, APR 20 2021.
• Citações Web of Science: 0

Resumo

While it remains a challenging task, having a fundamental understanding of the influence of water matrix composition is of central importance for the removal of pollutants in electrochemical treatment processes. This work studied the effect of the complexity of different water matrices on the removal of endocrine disruptors using different electrochemical advanced oxidation processes (EAOPs) based on H2O2 electrogeneration. The study helped improve the understanding of synthetic and real urban wastewater, and the effective mechanisms for the treatment of pollutants in these effluents. The results obtained showed that, regardless of the medium applied, there was an increase in pollutants mineralization in the following order, based on the EAOPs method employed: electrochemical oxidation with H2O2 electrogeneration (EO-H2O2) < electro-Fenton (EF) < photoelectro-Fenton (PEF). Despite the slower degradation kinetics of the EO-H2O2 process, its wider pH range makes it suitable for implementation. Aside the degradation/mineralization performance of the EO-H2O2 process, a time-course analysis was conducted on the nitrogen and chloride-based ions in the solution investigated since their presence is vital for determining the final use of the treated effluents based on the parameters of water quality. These parameters include the established maximum concentration levels of the compounds in the water matrix allowed for human consumption or the legal limits of discharge for wastewater treatment facilities. The findings help shed light on the role of coexisting species in water matrix, since this affects the efficiency and competitiveness of EAOPs. Clearly, having detailed knowledge of the water matrix composition will help one to have a better understanding of EAOPs, and this will enable to obtain higher degradation levels in water treatment processes. (C) 2021 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 19/20634-0 - Tratamento de águas residuais contaminadas com interferentes endócrinos pela aplicação de processos eletroquímicos de oxidação avançada: efeito sinérgico de diferentes catodos suportados em carbono
• Beneficiário: Alexsandro Jhones dos Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/22211-7 - EMU concedido no processo 2017/10118-0: analisador de carbono orgânico total (TOC)
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 17/23464-3 - Estudo da degradação dos agrotóxicos paraquat, metam-sódico e carbaril via Processos Oxidativos Avançados Eletroquímicos (POAE) utilizando eletrodos de difusão gasosa modificados com óxidos bimetálicos
• Beneficiário: Matheus Schiavon Kronka
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 18/22022-0 - EMU concedido no processo 2017/10118-0: sistema de espectroeletroquímica
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 17/10118-0 - Estudo e aplicação da tecnologia eletroquímica para a análise e a degradação de interferentes endócrinos: materiais, sensores, processos e divulgação científica
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/22210-0 - EMU concedido no processo 2017/10118-0: cromatógrafo líquido (HPLC)
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático