The object of the study was river water, which sampled 500 m before and after point discharge wastewaters from industrial activities. concentration chlorides, magnesium, calcium in all studied samples below value acceptable limit concentration. pH water sulphate were within limits. iron, ammonium, nitrite higher than limit. It suggested that pollution with iron mainly due to natural processes, ...

For the granulation of nitrate-sulfate-carbonate melt, prilling method is applied using a tower. The composition and properties new types fertilizers were studied. It shown that with ratio NH 4 NO 3 : СаСО (NH ) 2 SO = 100: 24: 1 product contains 28,03% - N, 0,50% , 10% СаО has granule strength 6.03 MPa, which much higher than pure granules (1.32 MPa). absorption AN 4.82 g. With an increase in ...

The white-rot fungi produce wide range of extracellular enzymes (especially ligninolytic enzymes) and they can degrade complicated and difficult degradable compounds. An immobilization of enzymes causes their stability, reusability and cheapness, so they could be effectively used in biotechnologies and other branches. In this work we focused on the optimization of isolation procedure namely pre...

The goal of the present study was to investigate production of cellulase in low cost medium by thermotolerant yeast. After screening, an efficient yeast isolate having capability of C1 (exo-gluconase) and Cx (endogluconase) production was isolated and designated as strain R-1. Maximum enzyme production was achieved at 50 °C, pH 5.5 in the medium containing bagasse powder 4% (w/v), and ammonium ...

Several types of lignocellulosic raw materials including wheat straw, sisal bagasse and sugarcane bagasse have different contents of cellulosic components. In our studies, aimed at isolating cellulose-degrading actinobacteria from Brazilian soils, a promising strain was selected and identified as Streptomyces sp. SLBA-08. This strain was tested for cellulase production under submerged fermentat...

Phosphate solublization activity of Bacillus subtilis in different carbon and nitrogen sources with insoluble form of phosphate sources like tricalcium phosphate and rock phosphate were studied. TCP solubilization with different carbon sources irrespective of incubation period can be related in the following order: glucose, fructose, arabinose, mannose, sucrose, lactose, and sorbitol. The pH dr...

Rat growth hormone was extracted from an acetone powder of transplantable mammosomatotropic pituitary tumors using buffered ammonium sulphate. Active material, precipitated by increasing the ammonium sulphate concentration to 1.5 M, was fractionated first by diethylaminoethyb cellulose chroma tography and then by preparative polyacrylamide gel electro phoresis. The yield of material in the pure...

To understand the molecular interactions between N,N-dimethylformamide with two families of ionic liquids, the thermophysical properties such as densities and ultrasonic sound speeds have been measured over the entire composition range at 25 C under atmospheric pressure. The materials investigated in the present study include two families of ionic liquids, viz., ammonium salts and imidazolium s...