earticle

영어

Due to the negative impacts of global warming and potential depletion of petroleum, the research for alternative fuels is an emerging issue all over the world. Biodiesel derived from biomass such as animal fat and vegetable oil is a potential substitute for petroleum-based diesel.
Especially, microalgae have been paid much attention as biomass feedstock for biodiesel production because they have high growth rate and need low land-use compared with conventional biomass. And they can fix CO2 directly from exhaust gas of industrial facilities.Recently, microalgal cultivation in various temperatures to produce biodiesel has been studied and temperature had an effect on microalgal growth rate and lipid contents.In this study, Nannochloris oculata has been cultivated in batch-type photobioreactor (PBR) to fix CO2 and produce biodiesel. Optimum microalgal culture conditions such as CO2 concentration, flow rate were investigated for high growth rate. Based on optimum culture conditions, column-type PBR with water jacket of which temperature can be controlled was developed and lipid productivity and component were investigated in PBR under alternating temperatures.