### Conceptual Cost of an Integrated Micro-algal Biomass-to-Liquids Facility

J. Brink & S. Marx
An order­of­magnitude cost estimate was conducted on a new integrated biomass­to­liquids (BtL) process that produces 2.6 million litres of biodiesel per year from micro­algal biomass harvested from the Hartbeespoort Dam. The total capital cost of the new BtL facility was estimated at $10.4 million or$19/bbl of biodiesel. The most expensive part of the new BtL facility is the extraction unit to produce micro­algal oils through thermochemical liquefaction, which contributed over 44% of the total...