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International Journal of Photoenergy
Volume 2014, Article ID 821674, 21 pages
Review Article

Recent Developments in Homogeneous Advanced Oxidation Processes for Water and Wastewater Treatment

1Department of Civil and Environmental Engineering, Water & Environmental Technology (WET) Center, Temple University, Philadelphia, PA 19122, USA
2Laboratory of Green Chemistry, Faculty of Technology, Lappeenranta University of Technology, Patteristonkatu 1, 50100 Mikkeli, Finland
3Department of Environmental Engineering and Science, Feng Chia University, No. 100 Wenhwa Road, Seatwen District 407, Taichung, Taiwan
4Department of Chemistry, Annamalai University, Annamalai Nagar 608002, India

Received 31 May 2013; Accepted 21 October 2013; Published 26 February 2014

Academic Editor: Vincenzo Augugliaro

Copyright © 2014 M. Muruganandham 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.


This paper reports on recent developments in homogeneous Advanced Oxidation Processes (AOPs) for the treatment of water and wastewater. It has already been established that AOPs are very efficient compared to conventional treatment methods for degradation and mineralization of recalcitrant pollutants present in water and wastewater. AOPs generate a powerful oxidizing agent, hydroxyl radical, which can react with most of the pollutants present in wastewater. Therefore, it is important to discuss recent developments in AOPs. The homogeneous AOPs such as O3, UV/O3, UV/O3/H2O2, and UV/H2O2, Fe2+/H2O2, UV/Fe2+/H2O2 on the degradation of pollutants are discussed in this paper. The influence on the process efficiency of various experimental parameters such as solution pH, temperature, oxidant concentration, and the dosage of the light source is discussed. A list of contaminants used for degradation by various AOPs and the experimental conditions used for the treatment are discussed in detail.