BIOFILTRATION OF THERMAL POWER PLANT FLUE GASES USING MICROALGAE BIOMASS

The article discusses the method of capturing carbon dioxide from the emissions of thermal power plants (TPP). Various methods for carbon dioxide absorption, catalytic purification, cryogenic purification, etc. are considered. Their advantages and disadvantages are studied. As an alternative method for capturing carbon dioxide from flue gases, a method of biofiltration of TPP flue gases with microalgae biomass is proposed. This method allows capturing carbon dioxide and at the same time obtaining microalgae biomass, which can be used as animal feed, as a fertilizer, as a raw material for the production of biodiesel and other
valuable components and products. The paper presents the results of a study of carbon dioxide absorption from flue gases of a TPP in St. Petersburg. It is shown that the rate of carbon dioxide absorption by a microalgae suspension was 0.312 g CO2 L-1 day-1. A block diagram of TPP flue gas purification using biofiltration with microalgae biomass is proposed.