Increasing Lipid Accumulation of Chlorella vulgaris Using Spirulina platensis in Flat Plate Reactor for Synthesizing Biodiesel

Lipid accumulation in potential C. vulgaris could be induced by controlling nitrogen concentration in optimum level. In this study, C. vulgaris and S. platensis were cultured in BG-11 medium in flat plate photobioreactor to assess biomass and lipid productivity. Colony composition 3: 2 (40%wt S. platensis) gives highest lipid yield (6.72%) in continuous illumination 3 000 lx compare to control sample (5.13%). This confirms that the existence of cyanobacteria induces lipid accumulation in C. vulgaris. Further study is needed to understand better biosynthesis in colony.