Performance of wind-powered soil electroremediation process for the removal of 2,4-D from soil

Autor(es)

Souza, F. L. ^[1] ; Llanos, J. ^[2] ; Saez, C. ^[2] ; Lanza, M. R. V. ^[1] ; Rodrigo, M. A. ^[2] ; Canizares, P. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Chem Sao Carlos, POB 780, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Castilla La Mancha, Dept Chem Engn, Edificio Enrique Costa Novella, Campus Univ S-N, Ciudad Real 13005 - Spain

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 171, p. 128-132, APR 15 2016.
• Citações Web of Science: 9

Resumo

In this work, it is studied a wind-powered electrokinetic soil flushing process for the removal of pesticides from soil. This approach aims to develop an eco-friendly electrochemical soil treatment technique and to face the in-situ treatment of polluted soils at remote locations. Herbicide 2,4 dichlorophenoxy-acetic acid (2,4-D) is selected as a model pollutant for the soil treatment tests. The performance of the wind-powered process throughout a 15 days experiment is compared to the same remediation process powered by a conventional DC power supply. The wind-powered test covered many different wind conditions (from calm to near gale), being performed 20.7% under calm conditions and 17% under moderate or gentle breeze. According to the results obtained, the wind-powered soil treatment is feasible, obtaining a 53.9% removal of 2,4-D after 15 days treatment. Nevertheless, the remediation is more efficient if it is fed by a constant electric input (conventional DC power supply), reaching a 90.2% removal of 2,4-D with a much lower amount of charge supplied (49.2 A h kg(-1) and 4.33 A h kg(-1) for wind-powered and conventional) within the same operation time. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/02580-7 - Tecnologias eletroquímicas verdes para o tratamento de resíduos poluídos com herbicidas
• Beneficiário: Fernanda de Lourdes Souza
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado