Coupling Photo and Sono Technologies with BDD Anodic Oxidation for Treating Soil-Washing Effluent Polluted with Atrazine

Autor(es)

Vieira dos Santos, E. ^[1] ; Saez, C. ^[2] ; Canizares, P. ^[2] ; Rodrigo, M. A. ^[2] ; Martinez-Huitle, C. A. ^{[3, 4, 5]}

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Norte, Sch Sci & Technol, BR-59078970 Natal, RN - Brazil

^[2] Univ Castilla La Mancha, Dept Chem Engn, Enrique Costa Bldg, Ciudad Real - Spain

^[3] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55128 Mainz - Germany

^[4] Univ Fed Rio Grande do Norte, Inst Chem, BR-59078970 Natal, RN - Brazil

^[5] UNESP, Natl Inst Alternat Technol Detect Toxicol Evaluat, Inst Chem, BR-14800900 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Electrochemical Society; v. 165, n. 5, p. E262-E267, 2018.
• Citações Web of Science: 5

Resumo

In this work, it was studied the treatment of soil washing effluents coming from the remediation of a soil spiked with atrazine by using photolysis, sonolysis, electrolysis as well as photo- and sono-electrochemical technologies using diamond anodes. Results clearly showed that both irradiated technologies were more efficient than the single electrolytic technology and these can become a good alternative for the treatment of these effluents. Main characteristic of the effluents produced in the soil washing depended strongly on the ratio surfactant/soil. And, as a novel catalytic effect, the production of persulfate from the sulfate released during the oxidation of SDS played an important role in the oxidation mechanisms of this type of pollutants. Then, SDS can be proposed as an auxiliary reagent to be introduced in the effluent when emulsion is present to increase the efficiency of the electrochemical approach used. (C) 2018 The Electrochemical Society. (AU)

• 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