Using Chlorella vulgaris as a source of bioenergy

In the long attempt to profitably produce biofuel from microalgae at a commercial scale, a recent report has identified the optimal conditions to grow one of the main candidates - Chlorella vulgaris.

It was found that the optimal light/dark regime (photoperiod) was 18:6, the optimal pH was 7 - 9, and the optimal temperature 20-30 C. Once these optimal conditions had been established, the effect of nutrient variation was examined. It was found that a maximum biomass yield (dry weight) of 0.439 g/L was obtained with 50 mg/L of nitrate and of 0.34 g/L at 25 mg/L of phosphate.

The long search for profitability continues.