Carbon sequestration was investigated using microalgae of Chlorella vulgaris in photo bioreactors (PBR). Culture was maintained at 24±1°C in a thermo-statically controlled room and illuminated with cool white inflorescence lamps (Philips 40W, Cool daylight 6500K) at an intensity of 2000 lux in a 12 h: light dark regime. In the present study, sodium bicarbonate (NaHCO3) used as a carbon source and their effect was investigated on microalgae cultures. The result has shown increased growth and productivity in terms of increase in cell number, biomass, carbon sequestration in algal cells. It showed high level of total organic carbon (TOC) in dried algal biomass in the absence of NaHCO3 mix.
Keywords: Carbon sequestration, microalgae, algal biomass, Chlorella vulgaris.