BIOFILTRATION OF TPP EMISSIONS WITH MICROALGAE

Abstract

This article presents an analytical review of current research on the biofixation of TPP emissions with microalgae. Microalgae are considered as promising microorganisms for carbon dioxide capture, the specific properties of CHP flue gases as a culture medium are characterized, and the influence of key process conditions, including CO2 concentration, illumination, temperature, pH, nutrient availability, and gas feed mode, is analyzed. Data on the use of various types of photobioreactors and flue gas feed schemes are summarized. It is shown that the efficiency of CO2biofixation depends significantly on the biological properties of the cultures used, as well as on the gas composition, the depth of its pretreatment, the design of the photobioreactor, and the chosen method for evaluating the results. Based on a comparison of literature data, it was established that the most promising candidates for biofixation of TPP emissions are members of the genera Chlorella, Scenedesmus, and Desmodesmus. Particular attention is given to the processing of the resulting biomass, primarily the production of feedstock for bioenergy and biofertilizers. It is concluded that further development of the technology involves selecting resistant strains, improving photobioreactors, optimizing cultivation modes, and transitioning to long-term pilot testing on real flue gases from power plants.