Optimization for biodegradation of aromatic hydrocarbons using response surface method
| Autor: | Chu Ching Hui, 朱靜蕙 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 Aromatic compounds are organic pollutants of the environment that cause many health-related problems. It is now realized that microbial degradation provides a safer, more efficient, and less expensive process to reduce the aromatic compounds of water pollution. The present study was to use response surface methodology (RSM) to find the optimal conditions for degradation of sodium benzoate by Pseudomonas putida and Wautersia eutropha. A central composite experimental design was employed to investigate the effects of sodium benzoate concentration, temperature and pH. Estimated optimum conditions of the sodium benzoate degradation were as follows: pH 7.3, temperature 30 °C and sodium benzoate concentration 0.5 g/L. Under these conditions, the maximal degradation efficiency of 90 % was reached. This work demonstrates that the response surface methodology could be a good prediction for minimising the parameter of experiments required. Keywords: degradation, sodium benzoate, response surface methodology, central composite experimental design |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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