2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 5. Marquis Intl. Symp. / New and Advanced Materials and Technologies
| Editors: | Kongoli F, Marquis F, Chikhradze N |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2017 |
| Pages: | 590 pages |
| ISBN: | 978-1-987820-69-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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State-of-the-art Bioassays Applications to Monitor Advanced Oxidation Process Efficiency for Environmental Remediation
Munawar Iqbal1;1PAKISTAN, Lahore, Pakistan;
Type of Paper: Regular
Id Paper: 236
Topic: 43
Abstract:
Industrialization and urbanization are the major causes of environmental pollution and water bodies serve as a final receptors of diverse variety of contaminants. Cytotoxic and mutagenic effects have been reported as a result of exposure to pollutants, commonly present in industrial wastewater. Bioassays based on higher plants and microorganisms are recognized as excellent models to detect cytogenetic and mutagenic agents and are frequently used in environmental monitoring studies. Detoxification and degradation efficiency of photo-catalytically (UV/H2O2/TiO2) treated different non-ionic surfactants were investigated. Mineralization was evaluated in terms of total organic carbon (TOC) reduction. A set of bioassays namely Allium cepa, haemolytic, brine shrimp assays were used for cytotoxicity evaluation, whereas Ames test was used for mutagenicity testing of Nonylphenol ethoxylate (NPEO) treated solution versus un-treated samples. Independent variables such as H2O2 amount, TiO2 concentration, reaction time, temperature, pH and shaking speed were optimized for maximum degradation and detoxification. As a result of UV/H2O2/TiO2 treatment, > 90% degradation was achieved. The TOC and COD values were reduced significantly. The toxicity analysis revealed that the surfactants cytotoxicity and mutagenicity also reduced considerably. Formation of low molecular mass carboxylic acid was evidenced by GC-MS along with FTIR and HPLC analysis. The results showed that UV/H2O2/TiO2 treatment enhanced TOC reduction and facilitated mineralization and detoxification of surfactants.