A strain of microalgae called Chlorella vulgaris-1 was grown in wastewater and showed maximum growth after 16 days, with a cell count of 50x106 cells/ml. The strain contains 35% proteins, 29% carbohydrates, 30% lipids, and 6% ash, making it useful for both environmental biotechnology and bioenergy. The fatty acid composition of the biomass was also determined.