Electrochemical treatment of soil-washing effluent with boron-doped diamond electrodes: A review

Autor(es)

de Oliveira Silva, Karyn Nathallye ^{[1, 2]} ; Rodrigo, Manuel Andres ^[3] ; dos Santos, Elisama Vieira ^{[1, 2]}

Afiliação do(s) autor(es)

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

^[2] Univ Fed Rio Grande do Norte, Postgrad Program Chem Engn, BR-59078970 Natal, RN - Brazil

^[3] Univ Castilla La Mancha, Fac Chem Sci & Technol, Dept Chem Engn, Campus Univ S-N, Ciudad Real 13071 - Spain

• Tipo de documento: Artigo de Revisão
• Fonte: CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE; v. 25, n. 6 DEC 2021.
• Citações Web of Science: 0

Resumo

In recent years, electrochemical technologies have been widely used to remove contaminants at lab-scale and semi-pilot scale. Boron-doped diamond (BDD) electrodes have been considered as efficient materials for the abatement of persistent organic pollutants owing to their outstanding properties, such as rapid rates of electron transfer for soluble redox systems, wide electrochemical potential window for water discharge reactions in aqueous and non-aqueous electrolytes, and high stability. Similar to other applications of electrochemical technology, wastes display medium to high ionic conductivity. Therefore, one of the applications highlighted for the electrolysis with these new electrodes is the treatment of soil-washing fluids, because in the polluted streams, washing of polluted soils provides a suitable conductivity to the effluent. In this context, this review summarizes the application of conductive diamond anodes for the electrochemical treatment of soil-washing effluents contaminated with different persistent organic pollutant such as pesticides, hydrocarbons, dyes, and organochlorine compounds, in single anodic oxidation processes and in other more complex processes such as electroFenton, photoelectrolysis, or sonoelectrolysis. Finally, the challenges and future research directions of electrochemical technology are discussed and outlined at pilot and prototype scale. (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