Abstract Surfactants represent a large group of industrial relevant substances and can be generated chemically, but also biologically. Important microbial producers are several Pseudomonas species, mainly known for their ability to produce rhamnolipids. For safety reasons, recombinant putida is preferred heterologous production rhamnolipids as well its precursor 3-(3-hydroxyalkanoyloxy) alkanoi...

The main bottleneck in fermentation technology is scaling up procedure of industrial enzymes according to the biological characteristics organism. current study describes production kinetics cellulases stirred tank reactor by using mutant and wild strains T. dupontii. span both bioreactor was examined. It found strain dupontii time required for optimum reduced 48h as compared 72h strain. kineti...

Let S be a set of n points in Rd in general position. A set H of k-flats is called an mk-stabber of S if the relative interior of any m-simplex with vertices in S is intersected by at least one element of H. In this paper we give lower and upper bounds on the size of minimum mk-stabbers of point sets in Rd and in general position. We study mainly mk-stabbers in the plane and in R3.

Besides its great potential in controlling water pollution from different sources, waste water treatment system generates significant amount of greenhouse gases. Hence, reducing the emission of greenhouse gases from the wastewater treatment plants is the major concern. The correct understanding and estimation of the greenhouse gases emitted from different points of the plan is essential to tack...

Although computational fluid dynamics (CFD) modelling has been applied to study bioprocesses where mechanical mixing and aerations are key, the effect of having a free surface usually ignored. This work studies tank for bioprocess applications analyze impact that assumption flat liquid level upon results, with without aeration. The methodology takes an experimental approach. A dual impeller mix...