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Direct capture and conversion of CO2 from air by growing a cyanobacterial consortium at pH up to 11.2.


ABSTRACT: Bioenergy with carbon capture and storage (BECCS) is recognized as a potential negative emission technology, needed to keep global warming within safe limits. With current technologies, large-scale implementation of BECCS would compromise food production. Bioenergy derived from phototrophic microorganisms, with direct capture of CO2 from air, could overcome this challenge and become a sustainable way to realize BECCS. Here we present an alkaline capture and conversion system that combines high atmospheric CO2 transfer rates with high and robust phototrophic biomass productivity (15.2 ± 1.0 g/m 2 /d). The system is based on a cyanobacterial consortium, that grows at high alkalinity (0.5 mol/L) and a pH swing between 10.4 and 11.2 during growth and harvest cycles.

SUBMITTER: Ataeian M 

PROVIDER: S-EPMC6593468 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Direct capture and conversion of CO<sub>2</sub> from air by growing a cyanobacterial consortium at pH up to 11.2.

Ataeian Maryam M   Liu Yihua Y   Canon-Rubio Karen Andrea KA   Nightingale Michael M   Strous Marc M   Vadlamani Agasteswar A  

Biotechnology and bioengineering 20190408 7


Bioenergy with carbon capture and storage (BECCS) is recognized as a potential negative emission technology, needed to keep global warming within safe limits. With current technologies, large-scale implementation of BECCS would compromise food production. Bioenergy derived from phototrophic microorganisms, with direct capture of CO<sub>2</sub> from air, could overcome this challenge and become a sustainable way to realize BECCS. Here we present an alkaline capture and conversion system that comb  ...[more]

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