Dechlorination of organohalogen compounds by an electrocatalytic cation supply system

An electrochemical reduction system was studied for the destruction of persistent organic pollutants (POPs). A two-compartment electrochemical system separated by a cation exchange membrane was adopted. The anolyte was sodium hydroxide solution, which supplied sodium ions as cations to the cathode....

Full description

Saved in:
Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2004-07, Vol.568 (1-2), p.293-300
Main Authors: Miyoshi, Kumiko, Alfafara, Catalino G., Matsumura, Masatoshi
Format: Article
Language:English
Subjects:
Chemistry
Dechlorination
Electrocatalytic destruction
Electrochemistry
Exact sciences and technology
General and physical chemistry
Kinetics and mechanism of reactions
Mediator
POPs
Sodium ions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An electrochemical reduction system was studied for the destruction of persistent organic pollutants (POPs). A two-compartment electrochemical system separated by a cation exchange membrane was adopted. The anolyte was sodium hydroxide solution, which supplied sodium ions as cations to the cathode. The catholyte was a reaction mixture of 1,2,3-trichlorobenzene as the model POP, tetrahexylammonium bromide (THAB) as the electrolyte and acetonitrile as the solvent. The characteristic features of this system were the decrease in the amount of organic solvent used by about 50%, and the function of sodium ions as the mediator for electron transfer. The mechanism of dechlorination of the system was elucidated using cyclic voltammetry (CV) and a potentiostatic study, and the effect of sodium ions on the electrocatalytic destruction was also investigated.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2004.02.004