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Kinetic modeling of biodiesel production by mixed immobilized and co-immobilized lipase systems under two pressure conditions

Authors
Lee, Jong HoKim, Sung BongYoo, Hah YoungLee, Ja HyunPark, ChulhwanHan, Sung OkKim, Seung Wook
Issue Date
6월-2013
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Keywords
Kinetic Model; Lipase; Enzyme Immobilization; Co-immobilization; Transesterification
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.30, no.6, pp.1272 - 1276
Indexed
SCIE
SCOPUS
KCI
Journal Title
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume
30
Number
6
Start Page
1272
End Page
1276
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/103042
DOI
10.1007/s11814-013-0021-z
ISSN
0256-1115
Abstract
A kinetic model of mixed immobilized lipase (MIL) and co-immobilized lipase (CIL) systems was investigated by calculating the kinetic parameters based on the reaction mechanisms for lipase-catalyzed transesterification of soybean oil and methyl alcohol. The kinetic parameters were assessed under atmospheric and supercritical fluid conditions. Although the CIL system had a higher initial reaction rate, the effect of substrate inhibition by methanol was higher than that in the MIL system. The initial reaction rate of MIL and CIL decreased under atmospheric conditions as the methanol concentration increased. However, the initial reaction rate of MIL and CIL increased until methanol concentration increased to twice that of oil under the supercritical fluid condition. As a result, the inhibition effect by methanol was identified through a kinetic analysis. A simulated model can be used to predict the optimal conditions for biodiesel production under atmospheric and supercritical conditions.
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