Biofixation of carbon dioxide from coal station flue gas using Spirulina sp. LEB 18 and Scenedesmus obliquus LEB 22

Abstract

The atmospheric concentration of CO 2 , the main greenhouse gas (GHG), has increased rapidly since the beginning of the industrial age. Anthropogenic emissions from coal-fired power plants are responsible for approximately 7% (w/w) of global CO 2 emissions. Microalgae CO 2 biofixation is a technology that reduces GHGs based on the use of solar energy through photosynthesis to capture and use the CO 2 that is produced by thermal and other sources. We determined the kinetic characteristics of the cyanophyteSpirulina sp. LEB 18 and the chlorophyteScenedesmus obliquus LEB 22 and their capacities for CO 2 fixation from the flue gas of a thermoelectric plant. The kinetic growth parameters of Spirulina increased when flue gas was used as the sole carbon source. At the end of cultivation, the biomass production of Spirulina sp. LEB 18 was 35% higher in the medium with flue gas compared to the Zarrouk medium, resulting in 5.7% CO 2 biofixation and a 24% reduction in flue gas CO 2 . Thus, the biofixation of CO 2 from flue gas may be useful in helping to alleviate global warming.

Trends, application and future prospectives of microbial carbonic anhydrase mediated carbonation process for CCUS

“…; Jorge et al . ). Recently, a limited microbial consortium was evaluated in the various dimensions of CCUS practices (Thomas et al .…”

“…Different biologists have explored the various natural consortia and engineered synthetic consortia of microbes for various purposes (Ohkuma 2003;Zuroff and Curtis 2012). For CCUS, researchers worked on the consortium development of CO 2 -tolerant microalga for enhanced biofuel and biomass production (Hanagata et al 1992;Jorge et al 2015). Recently, a limited microbial consortium was evaluated in the various dimensions of CCUS practices (Thomas et al 2016).…”