Conclusions

The present study highlights the capability of wastewater algae to grow at higher rates and with higher biomass productivities and store substantial amount of lipid. The highest growth (1.33±0.072 gL^-1) was observed in Chlorococcum sp. that reached the stationary phase at the end of 9^th day. The presence of Lipid compounds and changes in biochemical macromolecular composition were verified with the help FITR spectral analysis. The higher total lipid content was observed in Chlorococcum sp. that grows in wastewater ponds and lagoons. Palmitate was found out to be the most dominant among the FAME. Higher percentages of important fatty acids that are necessary from biofuel combustion perspectives is evident from FAME analysis. Higher lipid content, coupled with higher growth rate and desirable fatty acids content Chlorococcum sp., stands out as an excellent candidate for biofuel /lipid production and can be used as a cheap option for sustainable biofuel production.