Open AccessModeling of aromatic compound degradation by Pseudomonas putida ATCC 21812
Author(s) -
Ludovic Montastruc,
Iordan Nikov
Publication year - 2006
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq0604220m
Subject(s) - pseudomonas putida , biodegradation , aniline , degradation (telecommunications) , yield (engineering) , substrate (aquarium) , bioreactor , chemistry , fermentation , biological system , chemical engineering , thermodynamics , pulp and paper industry , computer science , organic chemistry , engineering , physics , telecommunications , oceanography , biology , enzyme , geology
Aniline degradation by Pseudomonas putida intact cells in a stirred batch reactor was studied. Since such kinetic data are of significant importance in view of the strain used in large-scale bioreactors, the biodegradation reaction was considered thoroughly. A mathematical model of the process is proposed. The model consists of differential equations describing the time-course of biomass growth and simultaneous aniline utilization, as well as the initial instantaneous substrate adsorption by the cell. The kinetic parameters were determined by using an adapted numerical procedure. In this procedure, the yield coefficient is considered as a variable. The model proposed is adequate to describe the experimental results delivered both from the study and from the literature. The model was compared to several reference models from the literature concerning biodegradation reactions. Bearing in mind that no other model from the literature describes the initial phase of substrate degradation, this specific part of the model proposed is significant for control of the exponential phase of fermentation.