Biotech

• “An integrated supercritical fluid technology with power cogeneration to produce biodiesel fuels, with no need for the costly separations involved with the conventional technology, is proposed, documented for technical and economic feasibility, and preliminarily designed.”¹

Researchers from Syracuse University, Syracuse, New York, have presented an article titled: “Supercritical biodiesel production and power cogeneration: Technical and economic feasibilities.”

The researchers from Syracuse, New York, have also noted:

• “The core of the integrated system consists of the transesterification of various triglyceride sources (e.g., vegetable oils and animal fats) with supercritical methanol/ethanol.”
• “Part of the reaction products can be combusted by a diesel power generator integrated in the system which, in turn, provides the power needed to pressurize the system and the heat of the exhaust gases necessary in the transesterification step.”
• “The latter energy demand can also be satisfied by a fired heater, especially for higher plant capacities.”
• “Different versions of this system can be implemented based on the main target of the technology: biodiesel production or diesel engine applications, including power generation.”
• “The process options considered for biodiesel fuel production estimate break-even processing costs of biodiesel as low as $0.26/gal ($0.07/L) with a diesel power generator and $0.35/gal ($0.09/L) with a fired heater for a plant capacity of 15,000gal/day (56,775L/day).”
• “Both are significantly lower than the current processing costs of approximately $0.51/gal ($0.13/L) of biodiesel produced by conventional catalytic methods.”
• “A retail cost of biodiesel produced by the proposed method is likely to be competitive with the prices of diesel fuels.”

(1) Deshpande A, Anitescu G, Rice PA, Tavlarides LL: Supercritical biodiesel production and power cogeneration: Technical and economic feasibilities. Bioresour Technol. 2009 Nov 23; (Article in Press)