Magnetically controlled microorganisms for the biological industrial wastewater treatment

Abstract

Microorganisms immobilized on magnetic carriers are used in biotechnology to increase efficiency and simplify work with microbial cells. The aim of this study was to obtain magnetically controlled immobilized forms of the environmentally significant microorganisms and to study the possibility of their cultivation with artificial nutrient media. Two bacterial strains, identified as the genus Bacillus, were used as the research object: B. subtilis ВГТУ05 and B. species ВГТУ06, promising for biological industrial wastewater treatment. The work carried out the immobilization of strains in magnetic alginate carriers. Established the bacterial cells’ immobilization did not affect their vitality. The optimal parameters of the electromagnetic field strength for growing strains in liquid nutrient media were selected. Shown the bacterial destructive strains immobilized into magnetic carriers gave the biomass increase of 24.3–25.0% during the cultivation in the electromagnetic field. The results could be used to develop the effective technology for local biological industrial wastewater treatment.

Keywords

• bacterial destructing strains
• immobilization of bacterial cells
• local biological wastewater treatment
• magnetic carriers of cells
• the electromagnetic field effect on microorganisms