Table of Contents Author Guidelines Submit a Manuscript
Journal of Chemistry
Volume 2016, Article ID 4108587, 8 pages
http://dx.doi.org/10.1155/2016/4108587
Research Article

Comparison of AOPs Efficiencies on Phenolic Compounds Degradation

1Chemical Engineering Lab, Centro Conjunto de Investigación en Química Sustentable, UAEMex-UNAM, Universidad Autónoma del Estado de México, km 14.5 Toluca-Atlacomulco Road, 50200 Toluca, MEX, Mexico
2Instituto de Ecología, Universidad del Mar, Ciudad Universitaria S/N, 70902 Puerto Ángel, OAX, Mexico
3Chemical Engineering Department, Faculty of Chemistry, Universidad Autónoma del Estado de México, Paseo Colon esq. Paseo Tollocan s/n, 50120 Toluca, MEX, Mexico

Received 23 July 2016; Revised 11 October 2016; Accepted 20 October 2016

Academic Editor: Sedat Yurdakal

Copyright © 2016 Lourdes Hurtado et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this work, a comparison of the performances of different AOPs in the phenol and 4-chlorophenol (4-CP) degradation at lab and pilot scale is presented. It was found that, in the degradation of phenol, the performance of a coupled electro-oxidation/ozonation process is superior to that observed by a photo-Fenton process. Phenol removal rate was determined to be 0.83 mg L−1 min−1 for the coupled process while the removal rate for photo-Fenton process was only 0.52 mg L−1 min−1. Regarding 4-CP degradation, the complete disappearance of the molecule was achieved and the efficiency decreasing order was as follows: coupled electro-oxidation/ozonation > electro-Fenton-like process > photo-Fenton process > heterogeneous photocatalysis. Total organic carbon was completely removed by the coupled electro-oxidation/ozonation process. Also, it was found that oxalic acid is the most recalcitrant by-product and limits the mineralization degree attained by the technologies not applying ozone. In addition, an analysis on the energy consumption per removed gram of TOC was conducted and it was concluded that the less energy consumption is achieved by the coupled electro-oxidation/ozonation process.