Investigating fluoxetine removal via an electro-Fenton-like approach: Experimental design, kinetic modeling and evaluation of operating conditions

Autor(es)

de Souza, Larissa Pinheiro ; de Souza, Isabela Matos Gaudio ; Klanovicz, Natalia ; Metolina, Patricia ; Souto, Robson da Silva ; Ramos, Bruno ; Lanza, Marcos Roberto de Vasconcelos ; Teixeira, Antonio Carlos Silva Costa

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 13, n. 4, p. 10-pg., 2025-08-01.

Resumo

This study aimed to understand the electro-Fenton-persulfate (EF/PS) system using fluoxetine (FLX) as a model contaminant. It examined the effects of Fe/PS molar ratio and current density through a central composite design. The study also explored how various factors like anode type, water matrix complexity, and pH impact the toxicity of the effluent. A kinetic model outlined the oxidation pathways and treatment strategies, highlighting the EF/PS process's benefits for FLX removal regarding energy efficiency and cost reduction. Optimal conditions (Fe/PS molar ratio = 0.59 and j = 53 mA cm-2) achieved complete FLX degradation in 5 min with no residual toxicity. The feasibility of applying the process to real water matrices at near-neutral pH was demonstrated, emphasizing the suitability of the DSA anode. Furthermore, the kinetic parameters obtained through mathematical modeling provide essential data for designing and configuring electro-Fenton/PS-oriented reactors and treatment systems for pharmaceutical wastewater impacted by the antidepressant. Finally, this work integrates kinetic modeling and toxicity assessment into the EF/PS framework, offering a promising, cost-effective approach for water remediation. (AU)

• Processo FAPESP: 22/14178-5 - Estudo da eficiência do processo intensificado eletro-fenton/persulfato com eletrogeração de h2o2 in-situ para remoção de contaminante emergente em meio aquoso
• Beneficiário: Isabela Matos Gaudio de Souza
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 22/12895-1 - Processos avançados para a degradação de poluentes emergentes: materiais catalíticos, sensores eletroanalíticos e divulgação científica
• Beneficiário: Marcos Roberto de Vasconcelos Lanza
• Modalidade de apoio: Auxílio à Pesquisa - Temático