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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Woodward, Steve Rodriguez-Couto, Susana Zouari-Mechichi, Héla Benzina, Ouafa Daâssi, Dalel Frikha, Fakher Mechichi, Tahar Belbahri, Lassaad |
| Description | Country affiliation: Tunisia Author Affiliation: Benzina O ( Laboratoire de Génie Enzymatique et de Microbiologie, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Route de Soukra, Km 4.5, BP 1173, 3038, Sfax, Tunisia.) |
| Abstract | The aim of this work was to determine the optimal conditions for the decolorization and the detoxification of two effluents from a textile industry-effluent A (the reactive dye bath Bezactive) and effluent B (the direct dye bath Tubantin)-using a laccase mediator system. Response surface methodology (RSM) was applied to optimize textile effluents decolorization. A Box-Behnken design using RSM with the four variables pH, effluent concentration, 1-hydroxybenzotriazole (HBT) concentration, and enzyme (laccase) concentration was used to determine correlations between the effects of these variables on the decolorization of the two effluents. The optimum conditions for pH and concentrations of HBT, effluent and laccase were 5, 1 mM, 50 % and 0.6 U/ml, respectively, for maximum decolorization of effluent A (68 %). For effluent B, optima were 4, 1 mM, 75 %, and 0.6 U/ml, respectively, for maximum decolorization of approximately 88 %. Both effluents were treated at 30 °C for 20 h. A quadratic model was obtained for each decolorization through this design. The experimental and predicted values were in good agreement and both models were highly significant. In addition, the toxicity of the two effluents was determined before and after laccase treatment using Saccharomyces cerevisiae, Bacillus cereus, and germination of tomato seeds. |
| ISSN | 09441344 |
| Issue Number | 8 |
| Volume Number | 20 |
| e-ISSN | 16147499 |
| Journal | Environmental Science and Pollution Research |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2013-08-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Coloring Agents Toxicity Laccase Chemistry Textile Industry Triazoles Water Pollutants, Chemical Bacillus Cereus Drug Effects Color Germination Industrial Waste Metabolism Lycopersicon Esculentum Growth & Development Models, Theoretical Saccharomyces Cerevisiae Seeds Trametes Enzymology Waste Disposal, Fluid Methods Waste Water Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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