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Title: | Kinetic modelling for removal of m-cresol from wastewater using mixed microbial culture in batch reactor |
Other Titles: | (In) Journal of Water Reuse and Desalination |
Authors: | Dey, Sudipta Mukherjee, Somnath |
Keywords: | Biodegradation Kinetic Models m-cresol Mixed Culture Substrate Inhibition Kinetics |
Issue Date: | 2012 |
Series/Report no.: | Vol. 2;No. 3 |
Abstract: | An indigenous mixed microbial culture isolated from an effluent treatment section of a coke oven plant has been studied for its m-cresol biodegradation capacity under aerobic batch reactor operation. The culture, after acclimatization could biodegrade up to 700 mg/L of m-cresol. The m-cresol concentration in the present study was at 50 mg/L and then ranged from 100 to 700 mg/L with step up concentration of 100 mg/L. Both biodegradation kinetics and microorganism growth kinetics were studied and kinetic parameters were estimated. The result showed that m-cresol was an inhibitory-type substrate and the inhibition effect became predominant after 200 mg/L of initial m-cresol. The specific growth rate of microorganisms increased up to 200 mg/L of m-cresol as sole carbon source, and then started decreasing. The kinetic data obtained in this study have been fitted to different substrate inhibition models (Haldane, Han-Levenspiel, Edward, Luong, Aiba, Teissier, Yano-Koga). Among all models, Han-Levenspiel and Luong were best fitted for this study (root mean square error ¼ 0.001349). In addition, the variation of observed yield coefficient Yx/s with initial mcresol concentration was investigated. The values of kinetic constants estimated by the models proved that the mixed culture used in the study had good potential for m-cresol degradation. |
URI: | http://172.16.0.4:8085/heritage/handle/123456789/3264 |
ISSN: | 2220-1319 |
Appears in Collections: | Biotechnology (Publications) |
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Kinetic modelling for removal_removed.pdf | 57.08 kB | Adobe PDF | View/Open |
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