title: [Stability of microbial association in the process of industrial biofiltration cleaning of gaseous discharges].
abstract: Results of industrial exploitation of a biofiltration plant tailored for purifying gaseous discharges of hazardous organic components such as toluene, cyclohexane, and xylene, are examined. Both numerical and compositional variations were monitored for a long-term (more than 1.5 years) utilization process in an association of microorganisms decomposing organic pollutants. A population of microbial association composed by one yeast and two bacterial strains in the biofilm on the surface of filtering sheets was abundant (10(8)-10(9) yeast cells/cm2 and 10(10)-10(11) bacterial cells/cm2) and stable during the whole period of monitoring. A microbial association in the culture medium averaging 10(6) yeast cells/l and 10(8) bacterial cells/l is more susceptible to technogenic impacts and seasonal fluctuations. Overall, the biofilter as an open and autonomic system maintained its microbial association, thereby providing a high-degree (93-98%) purification of industrial gaseous discharges from organic pollutants.
authors.affiliation: Institute of Biosynthesis of Protein Compounds, Moscow, 109004 Russia.
authors.forename: A Iu
authors.initials: AIu
authors.lastname: Vinarov
authors.forename: Z N
authors.initials: ZN
authors.lastname: Rodysheva
authors.forename: V N
authors.initials: VN
authors.lastname: Smirnov
authors.forename: D P
authors.initials: DP
authors.lastname: Sokolov
mesh_terms: D015169:Colony Count, Microbial; D005374:Filtration / Q000379:methods*; D007220:Industrial Waste; D008567:Membranes, Artificial; D008829:Microbiology
chemical_list: D007220:Industrial Waste; D008567:Membranes, Artificial