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

Jong Ho Lee, Sung Bong Kim, Hah Young Yoo, Ja Hyun Lee, Chulhwan Park, Sung Ok Han, Seung Wook Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1272-1276
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume30
Issue number6
DOIs
Publication statusPublished - 2013 Jun 1

Keywords

  • Co-immobilization
  • Enzyme Immobilization
  • Kinetic Model
  • Lipase
  • Transesterification

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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