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Modeling for batch phenol biodegradation with immobilized Alcaligenes faecalis
Author(s) -
Jia Xiaoqiang,
Wen Jianping,
Jiang Yan,
Bai Jing,
Cheng Xianrui,
Zheng Ying
Publication year - 2006
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10744
Subject(s) - biodegradation , phenol , alcaligenes faecalis , alcaligenes , polyurethane , chemistry , chemical engineering , diffusion , degradation (telecommunications) , batch reactor , chromatography , organic chemistry , materials science , bacteria , thermodynamics , catalysis , pseudomonas , telecommunications , genetics , physics , computer science , engineering , biology
Intrinsic cell growth and phenol biodegradation kinetics of Alcaligenes faecalis were studied in shaking flasks. Batch phenol biodegradation experiments were carried out in a 7.5 L fermentor with immobilized Alcaligenes faecalis in polyurethane foams. A double‐layer reaction‐diffusion model was developed to describe the dynamic behaviors of batch phenol biodegradation processes. Phenol degradation (within the cell‐immobilized polyurethane foams as well as in the main liquid phase) and cell growth (within the cell‐immobilized polyurethane foams only) at different initial phenol concentrations were simulated and analyzed in terms of both biodegradation time and layer radius course. The good agreement between the model simulations and the experimental measurements for phenol degradation in the main liquid phase validates the proposed double‐layer reaction‐diffusion model. © 2005 American Institute of Chemical Engineers AIChE J, 2006