Journal ArticleDOI
Biodegradation of phenol by arthrobacter and modelling of the kinetics
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TLDR
In this paper, the degradation of phenol with Arthrobacter species is studied in batch cultures and it is observed that the substrate is inhibiting, and the fit of various models, including the model proposed earlier by us, to the experimental data is studied.Abstract:
The toxic effects of phenol, a common constituent of many industrial effluents, necessitates treatment of the polluted streams. Biodegradation is a popular technique and enjoys many advantages. The degradation of phenol with Arthrobacter species is studied in batch cultures and it is observed that the substrate is inhibiting. The fit of various models, including the model proposed earlier by us [17], to the experimental data is studied. The model is used to fit available data in literature, which unfortunately is very sparse. In all the cases the present model fits the data best.read more
Citations
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Journal ArticleDOI
Kinetics of high strength phenol degradation using Bacillus brevis.
TL;DR: A strain of Bacillus brevis has been isolated and identified based on biochemical results and the biodegradation of phenol was maximum at pH 8.0, 5% of inoculum size and without any co-substrate.
Journal ArticleDOI
Microbial degradation of phenols: a review
TL;DR: The microbial degradation of phenols has been reviewed including the phenol-degrading microbes, factors affecting degradability, and the use of biotechnology with emphasis on degradation mechanisms and their kinetics and it was clear it may never be possible to describe the kinetic properties of a microbial cell with a single set of constants.
Journal ArticleDOI
Potential applications of NAD(P)-dependent oxidoreductases in synthesis: A survey
TL;DR: The applications of NAD(P)-dependent oxidoreductases for very selective synthesis processes are reviewed in this article, where the performance of various reactor types used are discussed in terms of productivity, product purity, and efficiency of cofactor regeneration.
Journal ArticleDOI
Kinetics of phenol degradation using Pseudomonas putida MTCC 1194
TL;DR: Pseudomonas putida (MTCC 1194) has been used to degrade phenol in water in the concentration range 100–1000 ppm and the inhibition effects of phenol as substrate have become predominant above the concentration of 5.31 mmoles/dm3.
Journal ArticleDOI
Potentials of biological oxidation processes for the treatment of spent sulfidic caustics containing thiols.
Jan Sipma,Anna Svitelskaya,Bart van der Mark,Look W. Hulshoff Pol,Gatze Lettinga,Cees J.N. Buisman,Albert J.H. Janssen +6 more
TL;DR: DMDS formation seems to play an important role in detoxification of MT, as simultaneous oxidation of sulfide and MT was achieved when treating a synthetic spent caustic in a bubble column reactor with carrier material.
References
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Journal ArticleDOI
Dynamic and steady state studies of phenol biodegradation in pure and mixed cultures
Ren Der Yang,Arthur E. Humphrey +1 more
TL;DR: The results indicate that it should be possible to achieve phenol removal from wastewaters down to levels of 1‐2 ppm in a single stage system, but because of the effects of substrate inhibition on kinetic behavior of the microorganisms, long lasting transients can occur.
Journal ArticleDOI
Extended monod kinetics for substrate, product, and cell inhibition.
Keehyun Han,Octave Levenspiel +1 more
TL;DR: A generalized form of Monod kinetics is proposed to account for all kinds of product, cell, and substrate inhibition, and in all cases this equation form fitted the data very well.
Journal ArticleDOI
Generalization of monod kinetics for analysis of growth data with substrate inhibition.
TL;DR: The inhibitory effect of butanol on yeast growth has been studied for the strain Candida utilis ATCC 8205 growing aerobically on butanol under batch conditions and a mathematical expression was proposed to fit the kinetic pattern ofbutanol inhibition on the specific growth rate.
Journal ArticleDOI
Biological elimination of volatile xenobiotic compounds in biofilters
TL;DR: In this article, microorganisms were isolated for the elimination of a number of xenobiotics, e.g. aromatic compounds and chlorinated hydrocarbons, in order to make bio-filtration applicable on a larger scale in process industry.
Journal ArticleDOI
Oxidation of an inhibitory substrate by washed cells (oxidation of phenol by Pseudomonas putida)
TL;DR: The equation governing the instant uptake of phenol by microorganisms in chemostat in the high conversion range of Phenol can be used to determine the stability range of continuous stirred tank biochemical reactors (CSTBR) utilizing phenol.
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