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Tri-Glyceride Production from Algae Grown on Dairy Anaerobic Digester Effluent

February 17th, 2007 | No Comments | Posted in Algae-Fuel-Research

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Do you know that oil derived from algae is an exciting renewable fuel possibility? – see Oilgae for more.

Tri-Glyceride Production from Algae Grown on Dairy Anaerobic Digester Effluent

A research paper presented at Confex, Nov 2006

Alexandra D. Holland, Chemical Engineering, University of Washington, R&T building, 4th floor, 616 NE Northlake Place, Seattle, WA 98105, Rhonda Schmidt, College of Forest Resources, University of Washington, R&T building, 4th floor, 616 NE Northlake Place, Seattle, WA 98105, Nam Nguyen, Material Science and Engineering, University of Washington, R&T building, 4th floor, 616 NE Northlake Place, Seattle, WA 98105, Joe M. Dragavon, Chemistry, University of Washington, Box 351700, Bagley Hall, Seattle, WA 98105, and Marina G. Kalyuzhnaya, Microbiology, University of Washington, R&T building, 4th floor, 616 NE Northlake Place, Seattle, WA 98105.

Abstract

Persistent rises in fossil fuels are rendering bioenergy production on the farm an increasingly attractive alternative. In addition, increasing farm animal densities in the state of Washington are producing a concentrated manure surplus, which exceeds the amount usable on local agricultural lands as fertilizer.
In the context of the NSF MCCE IGERT fellowship (Multinational Collaboration on Challenges to the Environment, Integrative Graduate Education and Research Traineeship) at the University of Washington, our interdisciplinary team has looked at the integration of Anaerobic Digestion (AD) and biofuel (as Tri-Acyl-Glycerol or TAG) production on dairy farms. In this process, the evolved AD methane is combusted to produce electrical power, and the resulting carbon dioxide is used to enrich the algae reactor. The nutrient-rich AD effluent is fed to the algae, thus by-passing the need to purchase fertilizer. Preliminary feasibility studies were based on existing AD operations (Van derHaak dairy, WA) and pilot airlift photobioreactors (Greenfuel Co., MA).
Preliminary experiments have assessed the robustness of various algal strains documented in the 1998 NREL report: “A Look Back at the U.S. Department of Energy’s Aquatic Species Program: Biodiesel from Algae” when given AD effluent as a nutrient source. In parallel, as developed in the NREL report, algae populations have been isolated from farm environments, fed on AD effluent, and sorted for fatty acid accumulation by flow cytometry. These results will be incorporated in the Puget Sound Energy photobioreactor pilot project in the state of Washington.

Original Confex source here

Nature gave us oil from algae; perhaps we should try Nature’s way again

Oilgae – Oil & Biodiesel from Algae
Oilgae Blog; The complete list of Oilgae Blog articles.
algOS – Biodiesel from Algae Open Source

About Oilgae – Oilgae – Oil & Biodiesel from Algae has a focus on biodiesel production from algae while also discussing alternative energy in general. Algae present an exciting possibility as a feedstock for biodiesel, and when you realise that oil was originally formed from algae – among other related plants – you think “Hey! Why not oil again from algae!”

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