[The adhesion of pathogenic microflora on carbon sorbents]

The adsorbing activity of granulated carbonic sorbents SKN and KAU, as well as their oxidated forms, containing protogenic carboxylic and phenolic groups with respect to Shigella flexneri, Salmonella typhimurium, Escherichia coli, Streptococcus aureus and Pseudomonas aeruginosa pathogenic strains has been studied. As shown in this study, the process of interaction between microorganisms and carbonic sorbents has two stages. At the first stage the main role is played by long-distance electrostatic forces and at the second stage, by Van der Waals short-distance forces, as well as bonds formed between cell structures and surface groupings of carbonaceous materials. In the mechanism of interaction between microbial cells and carbons the geometry of carbon surface plays an important role. KAU(0)-1 exhibits the highest degree of adhesion with respect to pathogenic bacteria.