Lipid extraction from Scenedesmus sp. microalgae using hot compressed hexane (HCH) was investigated. Extraction performance was evaluated near the critical point of hexane and was compared with that of hexane extraction performed at room temperature and pressure, and the Bligh and Dyer extraction method. Experimental data showed that HCH significantly improves the lipid yield and rate of lipid extraction compared to the use of hexane at ambient conditions. High yields of biodiesel-convertible lipid fractions were rapidly achieved at the critical point of hexane, at a level comparable to that of the Bligh and Dyer method.
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The authors thank Dr. Dae Jung Kim for assistance with preliminary experiments and the Kentucky Department of Energy Development and Independence for partial funding of this work.
Shin, Hee-Yong; Ryu, Jae-Hun; Bae, Seong-Youl; Crofcheck, Czarena L.; and Crocker, Mark, "Lipid Extraction from Scenedesmus sp. Microalgae for Biodiesel Production Using Hot Compressed Hexane" (2014). Center for Applied Energy Research Faculty and Staff Publications. 17.