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http://dx.doi.org/10.9713/kcer.2015.53.2.205

Lipid Extraction from Nannochloropsis sp. Microalgae for Biodiesel Production Using Supercritical Carbon Dioxide  

Choi, Kyung-Seok (Hanwoul Engineering Co., Ltd., R&D Center)
Ryu, Jae-Hun (Department of Chemical Engineering, Hanyang University)
Park, Dong-Jun (Hanwoul Engineering Co., Ltd., R&D Center)
Oh, Sea-Cheon (Department of Environmental Engineering, Kongju National University)
Kwak, Hyun (Hanwoul Engineering Co., Ltd., R&D Center)
Publication Information
Korean Chemical Engineering Research / v.53, no.2, 2015 , pp. 205-210 More about this Journal
Abstract
In this paper, microalgae lipid extractions were performed using conventional organic solvent and supercritical carbon dioxide (SC-$CO_2$) for biodiesel-convertible lipid fractions. The highest levels (58.31%) of fatty acid methyl ester (FAME) content in the lipid extracted by SC-$CO_2$ was obtained, and 18.0 wt.% crude lipid yield was achieved for Bligh-Dyer method. In the SC-$CO_2$ extraction, methanol as a co-solvent was applied to increase the polarity of extract. The experimental results indicated that crude lipid yield, FAME content and yield extracted by combination of SC-$CO_2$ with methanol were 12.5 wt.%, 56.32% and 7.04 wt.%, respectively, and this method could reduce the extraction time from 2 hour to 30 min when compared to SC-$CO_2$ extraction. Therefore, SC-$CO_2$ extraction is proven to be an environmentally-friendly and an effective method for lipid extraction from microalgae.
Keywords
Microalgae; Nannochloropsis sp.; Supercritical Extraction; Lipid; Biodiesel;
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Times Cited By KSCI : 2  (Citation Analysis)
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