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dc.contributor.authorHalim, R.
dc.contributor.authorGladman, B.
dc.contributor.authorDanquah, Michael
dc.contributor.authorWebley, P.
dc.identifier.citationHalim, R. and Gladman, B. and Danquah, M. and Webley, P. 2011. Oil extraction from microalgae for biodiesel production. Bioresource Technology. 102 (1): pp. 178-185.

This study examines the performance of supercritical carbon dioxide (SCCO2) extraction and hexane extraction of lipids from marine Chlorococcum sp. for lab-scale biodiesel production. Even though the strain of Chlorococcum sp. used in this study had a low maximum lipid yield (7.1 wt% to dry biomass), the extracted lipid displayed a suitable fatty acid profile for biodiesel [C18:1 (~63 wt%), C16:0 (~19 wt%), C18:2 (~4 wt%), C16:1 (~4 wt%), and C18:0 (~3 wt%)]. For SCCO2 extraction, decreasing temperature and increasing pressure resulted in increased lipid yields. The mass transfer coefficient (k) for lipid extraction under supercritical conditions was found to increase with fluid dielectric constant as well as fluid density. For hexane extraction, continuous operation with a Soxhlet apparatus and inclusion of isopropanol as a co-solvent enhanced lipid yields. Hexane extraction from either dried microalgal powder or wet microalgal paste obtained comparable lipid yields.

dc.publisherElsevier BV
dc.titleOil extraction from microalgae for biodiesel production
dc.typeJournal Article
dcterms.source.titleBioresource Technology
curtin.departmentCurtin Sarawak
curtin.accessStatusFulltext not available

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