Mathematical model for evaluation of mass transfer limitations in phenol biodegradation by immobilized Pseudomonas putida

Journal of Biotechnology
I BanerjeeB R Maiti

Abstract

A mathematical model is proposed to analyze the mass transfer limitations in phenol biodegradation using Pseudomonas putida immobilized in calcium alginate. The model takes into account internal and external mass transfer limitations, substrate inhibition kinetics and the dependence of the effective diffusivity of phenol in alginate gel on cell concentration. The model is validated with the experimental data from batch fermentation. The effect of various operating conditions such as initial phenol concentration, initial cell loading, alginate gel loading on the biodegradation of phenol is experimentally demonstrated. Phenol degradation time is found to decrease initially and reach stationary value with increase in cell loading as well as gel loading. The model predicts these trends reasonably well and shows the presence of external mass transfer limitations. A new concept of effectiveness factor is introduced to analyze the overall performance of batch fermentation.

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Citations

May 22, 2013·Bioprocess and Biosystems Engineering·Soonjae LeeJae-Woo Choi
Mar 26, 2009·Journal of Industrial Microbiology & Biotechnology·Guoying WangChunsheng Qiu
Jan 25, 2007·Biodegradation·Yan JiangZongding Hu
Nov 6, 2010·Applied Biochemistry and Biotechnology·Mei-Fang ZhouGuang-Ming Zeng
Apr 14, 2009·Journal of Hazardous Materials·Gustavo Yañez-OcampoMaría Laura Ortiz-Hernández
Jan 24, 2007·Bioresource Technology·Pichiah SaravananPrabirkumar Saha
May 4, 2005·Biodegradation·Paraskevi N Polymenakou, Euripides G Stephanou
May 4, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Omkar A ShindeSupriya Sarkar
Mar 12, 2019·Applied Biochemistry and Biotechnology·A C F S GarciaLuciane Pimenta Cruz Romão

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