A thermophilic cyanobacterium named Thermosynechococcus CL-1 (TCL-1) was cultivated in this study to eliminate the energy input of cooling system in flat plate photobioreactors. Cultivating TCL-1 in the 1.5cm light path flat plate photobioreactor exhibited stable characteristics for biomass production, CO2 fixation, and carbohydrate production under high illumination conditions (1000 or 2000μEm-2s-1). The greatest biomass and carbohydrate productivity, and CO2 fixation rate were recorded at 116, 67, and 170mg/L/h, respectively, in the 1.5cm light path photobioreactor and under optimal biomass concentration (about 3g/L). Cultivating Thermosynechococcus CL-1 in flat plate photobioreactors exhibits high potential for biomass production, CO2 fixation and bioethanol production.
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