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Table 9 Costs of oil extraction

From: Algae biodiesel - a feasibility report

Variable inputs Units Cost ($)
Algal biomass, closed, ($35.64/t)1 37,500 1,336,824,488
Algal biomass, open, ($1.32/t) 2 100,000 131,936,202
Methanol (at $200/t)* 12,522 2,504,348
NaOH (at $500/t)** 26 13,043
Hexane (at $600/t)*** 10,449 6,269,162
Cooling water ($0.0294/m3) 8,287,214 243,644
Steam (at $0.0049/kg) 56,250,000 275,625
Power (at $0.05883/kWh) 750,000 44,123
Fixed Inputs   
Labor(at $16/h) 12,000 192,000
Maintenance (at 10% annual capital costs)   654,937
Capital costs annualized   6,549,365
Biodiesel cost, closed ($/gal)   45.12
Biodiesel cost, open ($/gal)   4.99
Biodiesel cost, closed, diesel equivalent ($/gal)   49.39
Biodiesel cost, open, diesel equivalent ($/gal)   5.46
  1. 115,000 tons of oil at 40% yield
  2. 215,000 tons of oil at 15% yield
  3. * http://www.icispricing.com/il_shared/Samples/SubPage135.asp
  4. ** http://www.icis.com/StaticPages/a-e.htm#C
  5. *** http://www.icispricing.com/il_shared/Samples/SubPage90.asp