Phenol, in particular, is one of several dangerous synthetic compounds created by humans. There were more than 80,000 chemicals produced the US for industrial use, and many these are phenol phenolic that end up environment without being subjected to adequate safety assessment. types bacteria may use as a carbon source, making bioremediation this material promising possibility. We found at very ...

Aspects of metabolic regulation can be fruitfully studied with a combination of generic modelling, control analysis and graphical analysis using rate characteristics. This paper analyses a prototypical supply-demand system consisting of a biosynthetic subsystem subject to allosteric inhibition by its product and a demand process that consumes this product. The effect of changes in affinity of t...

The kinetics of dissimilatory reduction of goethite (alpha-FeOOH) was studied in batch cultures of a groundwater bacterium, Shewanella putrefaciens, strain CN32 in pH 7 bicarbonate buffer. The rate and extent of goethite reduction were measured as a function of electron acceptor (goethite) and donor (lactate) concentrations. Increasing goethite concentrations increased both the rate and extent ...

This paper discusses the challenges associated with reliable and optimal operation of perfusion bioreactors presents methods for modeling identification as well vision their integration. After presenting a generic model bioreactors, shows how to use concept basis flux modes uniquely compute reaction rates. The advantage this respect elementary nodes similar concepts in metabolic analysis is red...

It is necessary to design a nitrification bioreactor process so that further processing takes place optimally. Performance studies are carried out by evaluating the kinetic parameters apply specifically applied process. The Monod model was determine value of in designing and operating bioreactor. This study aims variations feed concentration (50, 75, 100%). mechanism reactor for decomposition p...

Batch autotrophic ammonia oxidation tracked through oxygen uptake measurements displays a preliminary acceleration phase. Failure to recognize the acceleration phase and fitting batch ammonia oxidation profiles with standard Monod-type mathematical models can result in meaningless kinetic parameter estimates. The objectives of this study were to examine the factors controlling the acceleration ...

Pichia stipitis NRRL Y-7124 has potential application in the fermentation of xylose-rich waste streams, produced by wood hydrolysis. Kinetic models of cell growth, death, and oxygen uptake were investigated in batch and oxygen-limited continuous cultures fed a rich synthetic medium. Variables included rates of dilution (D) and oxygen transfer (K(1)a) and concentrations of xylose (X), ethanol (E...

the steel slag is the main by-product of steel industry. the aim of this study using the steel slag as a low-cost absorbent in order to remove cadmium pollutant from industrial wastewater. some factors that affect the process of cadmium removal by steel slag such as ph, contact time, absorbent dosage and cadmium initial concentration has been studied. standard solution of synthetic wastewater i...