R. Amadelli, L. Samiolo, A. Battisti
Jul 1, 2011
Citations
1
Influential Citations
73
Citations
Quality indicators
Journal
Journal of The Electrochemical Society
Abstract
The oxidative degradation of phenolic compounds (4-chlorophenol and 4-nitrophenol) was studied using different electrochemical systems involving ozone formation at PbO 2 anodes: (i) direct electrolysis at constant current; (ii) ex-situ use of O 3 and (iii) combined use of anodically generated stream of O 3 /O 2 fed into the cathode where H 2 O 2 is electrogenerated by O 2 reduction. We show that the latter advanced oxidation method gives the best results: it is a Fenton-type degradation of the target pollutants taking place in the cathodic compartment by reason of the highly oxidizing environment brought about by radicals that are formed mainly in the reactions of 0 3 with OH ― and HO 2 ― .