Treatment Of Industrial Wastewater By Advanced Oxidation Processes

CATEGORY: WASTEWATER TREATMENT 
Treatment Of Industrial Wastewater By Advanced Oxidation Processes

Type	Thesis
Author	Munawar Iqbal
URL	Free Full Text Source:  http://eprints.hec.gov.pk/9800/
Date	2014
Type	PhD
University	University Of Agriculture, Faisalabad
Abstract	The industrial wastewater is the leading source of water pollution due to diverse nature of pollutants present in the effluents. The goal of this thesis was to establish methods for the treatment of petroleum refinery, soap & detergent and pulp & paper effluents as well as simulated solution of nonylphenol ethoxylates (NPEOs) using gamma and UV radiation in the presence of H2O2 and TiO2. The degradation of pollutants was monitored through UV/Vis, FTIR, GC-MS and HPLC techniques. The efficiency of advanced oxidation processes (AOPs) was evaluated on the basis of extant of degradation, water quality parameters and detoxification. The toxicities were determined through various bioassays such as allium cepa, haemolytic, shrimp and Ames tests. The independent variables such as radiation dose, catalysts concentration, exposure time, pH, temperature etc. were optimized using response surface methodology for maximum degradation of pollutant. Through advanced characterization techniques, it was found that the AOPs were able to oxidize recalcitrant, toxic and non-biodegradable compounds to various intermediates and eventually to inert end products by generating intermediacy hydroxyl radicals. The gamma ray/H2O2 treatment degrade the toxic residues, improve water quality and reduce the toxicity significantly, however, UV/TiO2/H2O2 furnished better response .From the results, it is concluded that the AOPs (UV/TiO2/H2O2 and gamma ray/H2O2) could be successfully used for the treatment of petroleum refinery, soap & detergent and pulp & paper effluents as well as NPEOs since the water quality fall within the permissible limits recommended by the environmental agencies.
# of Pages	154