Mutagenicity and cytotoxicity evaluation of photo-catalytically treated petroleum refinery wastewater using an array of bioassays

作者：Iqbal Munawar^*; Nisar Jan; Adil Muhammad; Abbas Mazhar; Riaz Muhammad; Tahir M Asif; Younus Muhammad; Shahid Muhammad

来源：Chemosphere, 2017, 168: 590-598.

DOI：10.1016/j.chemosphere.2016.11.021

• Petroleum refinery wastewater
• Advanced oxidation
• Absorbed dose
• Cytotoxicity
• Mutagenicity
• Bioassays

Degradation and detoxification of petroleum refinery wastewater (PRW) was carried out by advanced oxidation processes (UV/TiO2/H2O2 and gamma radiation/H2O2). Response surface methodology (RSM) was used to optimize the independent variables. The cytotoxicity was evaluated using Allium cepa, brime shrimp and haemolytic assays; whereas mutagenicity was tested by Ames tests (TA98 and TA100 strains). Maximum reductions in COD and BOD were recorded as 78% and 87% for UV/TiO2/H2O2 and 77% and 86% for gamma ray/H2O2, respectively. Treatments with both methods at optimized conditions reduced the cytotoxicity and mutagenicity of PRW, however, UV/TiO2/H2O2 system was found slightly efficient as compared to gamma ray/H2O2. From the results, it can be concluded that AOP's can successfully be utilized for the degradation of toxic pollutants in petroleum refinery wastewater. Moreover, the bioassays used in this study offered a good reliability for checking the detoxification of treated and un-treated PRW wastewater.

• 出版日期2017-2