WATER DISINFECTION FROM MICROORGANISMS USING CHITOSANM.N. SAPRYKINA, E.S. BOLGOVA, L.O. MELNYK AND V.V. GONCHARUKAbstract It is established that the effectiveness of the process of water disinfection depends on both the molecular weight of chitosan, the degree of its deacetylation, and the type of microorganism (Escherichia coli, Candida albicans). The optimal pH value of the medium for inactivating the culture of Candida albicans was determined. For the first time, a significant contribution of the flocculation of microorganisms with chitosan to the total effect of water disinfection is shown. It is also shown that the presence of organic and inorganic impurities in water reduces both the disinfecting and flocculating effects of the polysaccharide on the microbiological object. The impact of temperature on the antimicrobial effect of chitosan was revealed. Thus, the results obtained convincingly indicate that chitosan can be used to effectively purify water from a number of microorganisms. The use of investigated dependencies will improve the quality of water purification. |