**Heterogeneous Photocatalytic Oxidation an Effective Tool for Wastewater Treatment – A Review**

Cheng Chee Kaan1, Azrina Abd Aziz1, Shaliza Ibrahim1, Manickam Matheswaran2 and Pichiah Saravanan1 *1Department of Civil Engineering, Faculty of Engineering, University of Malaya, 2Department of Chemical Engineering, National Institute of Technology Tiruchirappalli, 1Malaysia 2India* 
