Table of Contents
Advances in Environmental Chemistry
Volume 2014 (2014), Article ID 958134, 8 pages
http://dx.doi.org/10.1155/2014/958134
Research Article

Experimental Design of Photo-Fenton Reactions for the Treatment of Car Wash Wastewater Effluents by Response Surface Methodological Analysis

1Green Chemistry Centre of Excellence, Department of Chemistry, University of York, York YO10 5DD, UK
2Basic Engineering Science Department, Faculty of Engineering, Minoufiya University, Shebin El Koum, Minoufiya 32511, Egypt
3Centre for Water Resources Research, School of Architecture, Landscape and Civil Engineering, University College Dublin, Newstead, Belfield, Dublin 4, Ireland

Received 2 May 2014; Revised 20 July 2014; Accepted 4 August 2014; Published 25 August 2014

Academic Editor: Huu Hao Ngo

Copyright © 2014 Maha A. Tony and Zeinab Bedri. 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

Establishing a treatment process for practical and economic disposal of car wash wastewater has become an urgent environmental concern. Photo-Fenton’s process as one of the advanced oxidation processes is a potentially useful oxidation process in treating such wastewater. Lab-scale experiments with UV source, coupled with Fenton’s reagent, showed that hydrocarbon oil is degradable through such a process. The feasibility of photo-Fenton’s process to treat wastewater from a car wash is investigated in the present study. A factorial design based on the response surface methodology was applied to optimize the photo-Fenton oxidation process conditions using chemical oxygen demand (COD) reduction as the target parameter to optimize. The reagent (Fe2+ and H2O2 concentration) and pH are used as the controlling factors to be optimized. Maximal COD reduction (91.7%) was achieved when wastewater samples were treated at pH 3.5 in the presence of hydrogen peroxide and iron in amounts of 403.9 and 48.4 mg/L, respectively.