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Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid.
Chemosphere. 2017 Sep; 182:85-89.C

Abstract

This work presents a novel approach of wastewater treatment technology that consists of a combined electrodialysis/electro-oxidation process, specially designed to allow increasing the efficiency in the oxidation of ionic organic pollutants contained in diluted waste. Respect to conventional electrolysis, the pollutant is simultaneously concentrated and oxidized, enhancing the performance of the cell due to the higher concentration achieved in the nearness of the anode. A proof of concept is tested with the ionic pesticide 2,4-D (2,4-dichlorophenoxyacetic acid) and results show that the efficiency of this new technology overcomes that electrolysis by more than double, regardless the supporting electrolyte used (either NaCl or Na2SO4). Moreover, the removal rate of 2,4-D when using NaCl was found to be more efficient, due to the best performance of the electrode material selected (DSA®) towards the formation of oxidants in chloride supporting electrolyte. These results open the way for overcoming the efficiency limitations of electrochemical treatment processes for the treatment of solutions with low concentrated ionic pollutants.

Authors+Show Affiliations

Chemical Engineering Department, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Av. Camilo José Cela nº 12, 13071 Ciudad Real, Spain.Chemical Engineering Department, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Av. Camilo José Cela nº 12, 13071 Ciudad Real, Spain. Electronic address: javier.llanos@uclm.es.Chemical Engineering Department, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Av. Camilo José Cela nº 12, 13071 Ciudad Real, Spain.Chemical Engineering Department, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Av. Camilo José Cela nº 12, 13071 Ciudad Real, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28494364

Citation

Raschitor, A, et al. "Novel Integrated Electrodialysis/electro-oxidation Process for the Efficient Degradation of 2,4-dichlorophenoxyacetic Acid." Chemosphere, vol. 182, 2017, pp. 85-89.
Raschitor A, Llanos J, Cañizares P, et al. Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid. Chemosphere. 2017;182:85-89.
Raschitor, A., Llanos, J., Cañizares, P., & Rodrigo, M. A. (2017). Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid. Chemosphere, 182, 85-89. https://doi.org/10.1016/j.chemosphere.2017.04.153
Raschitor A, et al. Novel Integrated Electrodialysis/electro-oxidation Process for the Efficient Degradation of 2,4-dichlorophenoxyacetic Acid. Chemosphere. 2017;182:85-89. PubMed PMID: 28494364.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Novel integrated electrodialysis/electro-oxidation process for the efficient degradation of 2,4-dichlorophenoxyacetic acid. AU - Raschitor,A, AU - Llanos,J, AU - Cañizares,P, AU - Rodrigo,M A, Y1 - 2017/05/05/ PY - 2017/02/10/received PY - 2017/04/24/revised PY - 2017/04/25/accepted PY - 2017/5/12/pubmed PY - 2017/9/25/medline PY - 2017/5/12/entrez KW - Electro-oxidation KW - Electrodialysis KW - High efficiency KW - Integrated process KW - Ionic pollutant SP - 85 EP - 89 JF - Chemosphere JO - Chemosphere VL - 182 N2 - This work presents a novel approach of wastewater treatment technology that consists of a combined electrodialysis/electro-oxidation process, specially designed to allow increasing the efficiency in the oxidation of ionic organic pollutants contained in diluted waste. Respect to conventional electrolysis, the pollutant is simultaneously concentrated and oxidized, enhancing the performance of the cell due to the higher concentration achieved in the nearness of the anode. A proof of concept is tested with the ionic pesticide 2,4-D (2,4-dichlorophenoxyacetic acid) and results show that the efficiency of this new technology overcomes that electrolysis by more than double, regardless the supporting electrolyte used (either NaCl or Na2SO4). Moreover, the removal rate of 2,4-D when using NaCl was found to be more efficient, due to the best performance of the electrode material selected (DSA®) towards the formation of oxidants in chloride supporting electrolyte. These results open the way for overcoming the efficiency limitations of electrochemical treatment processes for the treatment of solutions with low concentrated ionic pollutants. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/28494364/Novel_integrated_electrodialysis/electro_oxidation_process_for_the_efficient_degradation_of_24_dichlorophenoxyacetic_acid_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)30707-5 DB - PRIME DP - Unbound Medicine ER -