MODELING OXIDATIVE CAPACITY OF BIOFILM IMMOBILIZED ON GRANULAR PHOSPHOGYPSUM DURING GAS PURIFICATION
The article focused on the modeling of biofilm oxidative capacity under immobilization of sulfur-oxidizing microorganisms groups on phosphogypsum granules in the bio-desulphurization system. The oxidizing capacity of the biofilm was described, that included the basic parameters of bacterial growth kinetics, taking into account regime parameters of bio-desulfurization process and characteristics of phosphogypsum granular support. The results of mathematics modelling are consistent with experimental data corresponding to the dynamics reduce the concentration of hydrogen sulfide in the gas stream exiting the biofilter. The further development of environmentally safe approach to the use of phosphogypsum was determined as a mineral carrier for the development of the association of sulfur-oxidizing microorganisms. These investigations allow optimization of the gas purification and predicting of the dynamics of hydrogen sulfide removal under various modes of bio-desulfurization system load. Bibl. 13, Fig. 3.
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