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Biodegradation kinetic studies for the removal of p-cresol from wastewater using Gliomastix indicus MTCC 3869

Paper ID Volume ID Publish Year Pages File Format Full-Text
4392 224 2008 11 PDF Available
Title
Biodegradation kinetic studies for the removal of p-cresol from wastewater using Gliomastix indicus MTCC 3869
Abstract

Biodegradation of p-cresol by a pure culture of new filamentous fungal strain Gliomastix indicus was studied. The fungus strain was acclimatized to the higher concentration of 700 mg/l of p-cresol in modified czapeck medium over a period of two months. The lag period was 24 h. The shake flask batch experiments were carried out at temperature of 28 °C and pH of 6 over a wide range of initial p-cresol concentration (10–700 mg/l) keeping initial biomass concentration constant at 18.72 mg/l. Experimentally it was observed that p-cresol was inhibitory type substrate and the inhibition effect of p-cresol became predominant above a concentration of 50 mg/l. The kinetics of cell growth and p-cresol degradation were investigated. Six kinetic models (Haldane, Andrews, Webb, Yano, Aiba, and Teissier) were fitted to the experimental growth kinetic data. Models by Haldane, Andrews, Webb and Yano (correlation coefficient R2 > 0.99) were found to be most suitable models. In addition, the variation of observed yield coefficient YX with specific growth rate μg was investigated. The maintenance energy coefficient and true growth yield coefficient, were found to be 0.0227 h−1 and 1.0708 (mg/mg), respectively. The specific substrate utilization rate was represented in terms of specific biomass growth rate. The decay coefficient was found to be 0.0055 h−1. The effect of pH and nitrogen source of medium on biodegradation of p-cresol was investigated as well.

Keywords
CNS, central nervous system; EPA, Environmental Protection Agency; IMTECH, Institute of Microbial Technology; MOEF, Ministry of Environment and Forest; MTCC, Microbial Type Culture Collection; OD, optical density; PDA, potato dextrose agar; WHO, World Hea
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Biodegradation kinetic studies for the removal of p-cresol from wastewater using Gliomastix indicus MTCC 3869
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 40, Issue 2, 1 June 2008, Pages 293–303
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us