Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi Research Article
Growth Kinetics of Acclimated Mixed Culture for Degradation of Isopropyl Alcohol (IPA)
Smita Raghuvanshi1*, Suresh Gupta1 and B. V. Babu21Assistant Professor, Department of Chemical Engineering, Birla Institute of Technology and Science (BITS), PILANI–333 031, Rajasthan, India
2Director, Institute of Engineering and Technology (IET), JK Lakshmipat University (JKLU) JAIPUR–302026, Rajasthan, India
- Corresponding Author:
- Smita Raghuvanshi
Department of Chemical Engineering
Birla Institute of Technology and Science (BITS)
PILANI–333 031 (Rajasthan) India
Tel: +91-1596-245073 ext. 215
Fax: +91-1596-244183
E-mail: smita@bits-pilani.ac.in; smitaraghuvanshi@gmail.com
Received date: November 06, 2012; Accepted date: November 29, 2012; Published date: December 03, 2012
Citation: Raghuvanshi S, Gupta S, Babu BV (2012) Growth Kinetics of Acclimated Mixed Culture for Degradation of Isopropyl Alcohol (IPA). J Biotechnol Biomaterial S13:002. doi:10.4172/2155-952X.S13-002
Copyright: © 2012 Raghuvanshi S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Iso-propyl alcohol (IPA) is an organic chemical regarded as a potential pollutant. The permissible exposure limit (PEL) of IPA specified by Occupational Safety and Health Administration (OSHA) is 400 mg L-1. In this study the aerobic biodegradation of IPA is carried out by an acclimated mixed culture obtained by sewage treatment plant, for the range of 200-700 mg L-1 of initial IPA concentration. The batch degradation study demonstrated that the maximum growth rate obtainable is 0.337 h-1. To explain the inhibition effects, different kinetic growth models such as Haldane, Luong and Edward models are applied. The experimental data are found to fit well with inhibition models having the values of coefficient of determination (R2) of 0.989, 0.986 and 0.984 respectively for Haldane, Luong and Edward models. Based on the disappearance of IPA, degradation is modeled by the three-half-order kinetics and the resulting kinetic parameters are reported.
