ISSN 2756-3707
International Journal of Histology and Cytology ISSN 2447-9535 Vol. 4 (7), pp. 337-344, July, 2017. © International Scholars Journals
Full Length Research Paper
Kinetic models of cell growth, substrate utilization and bio-decolorization of distillery wastewater by Aspergillus fumigatus UB260
Mohammad Pazouki1*, Ghasem Najafpour2 and Mohammad Raouf Hosseini3
1Department of Energy, Materials and Energy Research Center, Karaj, Iran.
2Faculty of Chemical Engineering, Noshirvani University of Technology, Babol, Iran.
3Department of Mining Engineering, Shahid Bahonar University, Kerman, Iran.
*Corresponding author. E-mail: [email protected]. Tel: +98-261-6208943. Fax: +98-261-6201888.
Accepted 29 January, 2016
Abstract
Bio-decolorization kinetic studies of distillery effluent in a batch culture were conducted using Aspergillus fumigatus. A simple model was proposed using the Logistic Equation for the growth, Leudeking-Piret kinetics for bio-decolorization, and also for substrate utilization. The proposed models appeared to provide a suitable description for each parameter devoted to the growth phase. The biomass yield for 14 g/l substrate was 70.7%. The maximum specific growth rate (µm) of the obtained and fitted data is close to the calculated µm of the present research work ( 0.03 h −1 ). It was found that the kinetic model for the bio-decolorization of distillery effluent was growth associated.
Key words: Bio-decolorization, kinetic models, distillery effluent, Logistic Equation, leudeking-Piret kinetics.