A wind-powered BDD electrochemical oxidation process for the removal of herbicides

Author(s)

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

Affiliation

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

^[2] Univ Castilla La Mancha, Dept Chem Engn, Ciudad Real 13005 - Spain

• Document type: Journal article
• Source: Journal of Environmental Management; v. 158, p. 36-39, AUG 1 2015.
• Web of Science Citations: 14

Abstract

In the search for greener treatment technologies, this work studies the coupling of a wind turbine energy supply with an electrolytic cell (CWTEC device) for the remediation of wastewater polluted with pesticide 2,4-dichlorophenoxyacetic acid (2,4-D). The discontinuous and unforeseeable supply of energy is the main challenge inspiring this new proposal, which aims at reducing the environmental impact of electrolytic treatment by using a green energy supply. The results obtained using the coupled technologies are compared with those obtained by powering the electrolyser with a traditional power supply with a similar current intensity. The mineralisation of wastewater can be accomplished independently of how the electrolytic cell is powered, although differences in performance are clearly observed in the total organic carbon (TOC) and 2,4-D decays. These changes can be explained in terms of the changing profile of the current intensity, which influences the concentrations of the oxidants produced and thereby the mediated electrolytic process. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 14/02580-7 - Green electrochemical technologies for the treatment of wastewater polluted with herbicides
• Grantee: Fernanda de Lourdes Souza
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor