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The main factor of effective biological waste water treatment and pollutants biotransformation is correlation between different nitrogen forms in the media. The waste water specimens were obtained from the pulp and paper mill of the Russian North involving BAS-technology. Concentration of ammonium ions in wastewater was carried out on a spectrophotometer by Sedji-Solorzano method using phenol-hypochlorite reaction. Nitrite ions were determined colorimetrically by diazotization with sulfanilamide and subsequent cou...

The drip feed reactor system for continuous biosynthesis of bacterial cellulose with desired microfibril orientation is proposed. Native bacterial cellulose is obtained on the glucose media using symbiotic complex of yeast and bacteria A.xylinum. Micromorphological characteristics of the bacterial cellulose structure are visualized using SEM Sigma VP ZEISS scanning electron microscopy. The crystallinity degree of the specimens is calculated by new method using X-ray diffractometry (XRD-7000S diffractometer). The 2...