Towards the complete dechlorination of chloroacetic acids in water by sonoelectrochemical methods: Effect of the cathode material on the degradation of trichloroacetic acid and its degradation by-products

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Title: Towards the complete dechlorination of chloroacetic acids in water by sonoelectrochemical methods: Effect of the cathode material on the degradation of trichloroacetic acid and its degradation by-products
Authors: Esclapez Vicente, María Deseada | Tudela Montes, Ignacio | Díez García, María Isabel | Sáez Bernal, Verónica | Bonete Ferrández, Pedro
Research Group/s: Grupo de Fotoquímica y Electroquímica de Semiconductores (GFES)
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Keywords: Chloroacetic acids | Trichloroacetic acid | Sonoelectrochemistry | Dechlorination | Ultrasound
Knowledge Area: Química Física
Issue Date: May-2015
Publisher: Elsevier
Citation: Applied Catalysis B: Environmental. 2015, 166-167: 66-74. doi:10.1016/j.apcatb.2014.10.061
Abstract: The effect that the cathode material has on the electrochemical and high-frequency sonoelectrochemical degradation of TCAA in water samples with no background electrolyte has been studied in the work here presented. For all the cathode materials employed (Ti, AISI 304 stainless steel, carbon and Pb), the high-frequency sonoelectrochemical treatment yielded significantly higher fractional conversions for trichloroacetic acid and a significantly higher degradation efficiency when considering the removal of chlorinated species from the treated solutions. Moreover, differences in fractional conversion, degradation efficiency, current efficiency, C mass balance error and the concentration of the different trichloroacetic acid degradation by-products show how the cathode material has a strong effect on the efficiency of the electrochemical and high-frequency sonoelectrochemical treatments and the degradation mechanisms that may take place. Regarding this, complete dechlorination was virtually achieved in the high-frequency sonoelectrochemical degradation using a Pb cathode, where C mass balance results suggested the mineralization of TCAA.
Sponsor: M.D.E. and P.B. thank Caja de Ahorros del Mediterráneo for its financial support under Ph.D. and visit grants.
URI: http://hdl.handle.net/10045/53370
ISSN: 0926-3373 (Print) | 1873-3883 (Online)
DOI: 10.1016/j.apcatb.2014.10.061
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.apcatb.2014.10.061
Appears in Collections:INV - GFES - Artículos de Revistas

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