The present study focuses to investigate the potential of a robust microalga strain, Ascochloris sp. for bioremediation of raw dairy wastewater by studying its biomass yield, biomass, aerial and lipid productivities along with lipid %. Control experiment using NPK nutrient (19:19:19) was used for the study. In both indoor as well as outdoor cultivation studies, biomass (g/L/d) and areal productivity(g/m2/d) were found to be higher in raw dairy wastewater (indoor-0.27& outdoor 0.29) as compared to NPK nutrient (19:19:19) (indoor- 0.14 & outdoor 0.15). Moreover, raw dairy wastewater recorded the maximum lipid content (~28.0%)as compared to NPK nutrient (19:19:19)(~16% ). Post harvesting water was further subjected to activated carbon filtration and resulted in >90 %, >75 % and >95% reduction in COD, nitrate and total phosphate respectively. Lipid from microalgal biomass was extracted through soxhlet method using different solvents viz. hexane, chloroform, isopropyl alcohol, petroleum ether and diethyl ether. Maximum lipid was obtained through chloroform (~28%). Further the lipid obtained was subjected to acid catalyst based transesterification to convert the triglycerides to FAME (biodiesel) which resulted in 70% conversion efficiency. The properties of the algal biodiesel obtained was investigated which were compatible to the ASTM standards. Also Gas chromatographic analysis of the biodiesel was done which indicated the presence of saturated and unsaturated compounds in the sample.
