There are various options for using the remaining algal biomass
such as combustion, biogas and fertilizers. In this paper, the algal
biomass remaining after oil and protein extraction or oil, protein
and carbohydrate extraction are assumed to be used in anaerobic
digester to produce biogas that fuels the combined heat and power
plant installed within system to generate partial process heat and
electricity. The glycerol produced during biodiesel production, protein
and succinic acid are assumed to be sold to the market replacing
conventional products