Green electrochemical technologies for the treatment of wastewater polluted with herbicides

• Grant number: 14/02580-7
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: May 01, 2014
• End date: January 31, 2015
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Marcos Roberto de Vasconcelos Lanza
• Grantee: Fernanda de Lourdes Souza
• Supervisor: Manuel Andrés Rodrigo
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Universidad de Castilla-La Mancha, Ciudad Real (UCLM), Spain
• Associated to the scholarship: 13/15000-6 - Herbicides degradation applied to rice culture by electro-oxidative process, BP.PD

Abstract

Electrochemical technologies have proved be a viable and efficient alternative for the removal pollutants from wastewater. The use of photovoltaic (PV) cells can be an appropriate option to resolve the problem of high energy consumption and make such technologies clean and according to the principles of green chemistry. This project aims at the development of an electrochemical treatment technique that uses renewable energy sources for the treatment of a pesticide-containing solution. First, the degradation of the pesticide solutions will be compared using both a conventional electric power source and an electrooxidation (EO) system powered by a PV array. Special attention will be devoted to the influence of operating conditions and the main intermediates formed during the electrolytic process. Another parameter to be studied is the influence of the configuration of both PV generator and electrochemical reactor on the pesticide removal. For the analysis of the efficiency of treatment processes, quantitative parameters, such as high efficiency liquid chromatography, analysis of chemical oxygen demand and total organic carbon will be carried out. The experiments will be conducted in the Engineering Electrochemical and Environmental Laboratory of the Engineering Chemical Departament at the School of chemical Sciences of the University of Castilla La Mancha, Ciudad Real, Spain. The proposal, is a hot topic today, therefore, excellent papers will be published in journals of high-impact factors. Moreover, the collaboration among different laboratories and researchers from different fields (engineering, analytical chemistry and electrochemistry) will enable a strong consolidation of this collaboration and of this research line in Brazil. (AU)

Scientific publications

(8)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SOUZA, FERNANDA L.; COTILLAS, SALVADOR; SAEZ, CRISTINA; CANIZARES, PABLO; LANZA, MARCOS R. V.; SECO, AURORA; RODRIGO, MANUEL A.. Removal of algae from biological cultures: a challenge for electrocoagulation?. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, v. 91, n. 1, p. 82-87, JAN 2016. (14/02580-7)

SOUZA, F. L.; SAEZ, C.; LLANOS, J.; LANZA, M. R. V.; CANIZARES, P.; RODRIGO, M. A.. Solar-powered electrokinetic remediation for the treatment of soil polluted with the herbicide 2,4-D. Electrochimica Acta, v. 190, p. 371-377, FEB 1 2016. (14/02580-7)

SOUZA, F. L.; SAEZ, C.; LLANOS, J.; LANZA, M. R. V.; CANIZARES, P.; RODRIGO, M. A.. Solar-powered CDEO for the treatment of wastewater polluted with the herbicide 2,4-D. CHEMICAL ENGINEERING JOURNAL, v. 277, p. 64-69, OCT 1 2015. (14/02580-7)

SOUZA, F. L.; LANZA, M. R. V.; LLANOS, J.; SAEZ, C.; RODRIGO, M. A.; CANIZARES, P.. A wind-powered BDD electrochemical oxidation process for the removal of herbicides. Journal of Environmental Management, v. 158, p. 36-39, AUG 1 2015. (14/02580-7)

SOUZA, F. L.; SAEZ, C.; LANZA, M. R. V.; CANIZARES, P.; RODRIGO, M. A.. Removal of pesticide 2,4-D by conductive-diamond photoelectrochemical oxidation. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 180, p. 733-739, JAN 2016. (14/02580-7)

SOUZA, F. L.; SAEZ, C.; LANZA, M. R. V.; CANIZARES, P.; RODRIGO, M. A.. Is it worth the use of bipolar electrodes in electrolytic wastewater treatment processes?. CHEMICAL ENGINEERING JOURNAL, v. 264, p. 310-315, MAR 15 2015. (14/02580-7)

SOUZA, FERNANDA; SAEZ, CRISTINA; LANZA, MARCOS; CANIZARES, PABLO; RODRIGO, MANUEL A.. Towards the scale-up of electrolysis with diamond anodes: effect of stacking on the electrochemical oxidation of 2,4 D. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, v. 91, n. 3, p. 742-747, MAR 2016. (14/02580-7)

SOUZA, F. L.; LLANOS, J.; SAEZ, C.; LANZA, M. R. V.; RODRIGO, M. A.; CANIZARES, P.. Performance of wind-powered soil electroremediation process for the removal of 2,4-D from soil. Journal of Environmental Management, v. 171, p. 128-132, APR 15 2016. (14/02580-7)