請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/41499
標題: Biodiesel production from supercritical carbon dioxide extracted Jatropha oil using subcritical hydrolysis and supercritical methylation
作者: Chen, C.H.
張傑明
Chen, W.H.
Chang, C.M.J.
Lai, S.M.
Tu, C.H.
關鍵字: Jatropha curcas
Supercritical extraction
Subcritical hydrolysis
Supercritical methylation
Biodiesel
fuel production
rapeseed oil
methanol
curcas
transesterification
kinetics
lipase
water
期刊/報告no:: Journal of Supercritical Fluids, Volume 52, Issue 2, Page(s) 228-234.
摘要: This study investigates supercritical carbon dioxide (SC-CO(2)) extraction of triglycerides from powdered Jatropha curcas kernels followed by subcritical hydrolysis and supercritical methylation of the extracted SC-CO(2) oil to obtain a 98.5% purity level of biodiesel. Effects of the reaction temperature, the reaction time and the solvent to feed ratio on free fatty acids in the hydrolyzed oil and fatty acid esters in the methylated oil via two experimental designs were also examined. Supercritical methylation of the hydrolyzed oil following subcritical hydrolysis of the SC-CO(2) extract yielded a methylation reaction conversion of 99%. The activation energy of hydrolysis and trans-esterified reactions were 68.5 and 45.2 kJ/mole, respectively. This study demonstrates that supercritical methylation preceded by subcritical hydrolysis of the SC-CO(2) oil is a feasible two-step process in producing biodiesel from powdered Jatropha kernels. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/41499
ISSN: 0896-8446
文章連結: http://dx.doi.org/10.1016/j.supflu.2009.12.010
顯示於類別:化學工程學系所

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