Isolation and determination of cultural characteristics of a new highly CO2 tolerant fresh water microalgae

Fresh water microalgae, which has high CO2 tolerance, were isolated and its cultural characteristics were investigated. The ZY-1 strain was identified as genus Chlorella. It showed maximum growth at 10% (v/v) CO2 enriched air flowing condition, and a good growth rate in a broad range of physically controllable conditions, including CO2 concentration up to 70% (v/v), CO2 enriched air flow rate, temperature and pH value. The results indicated the feasibility of the ZY-1 strain for fixing CO2 from stack gases.