文档介绍：Process Biochemistry 37 (2001) 65–71
ate/procbio
Biodiesel production from crude palm oil and evaluation of
butanol extraction and fuel properties
Edward Crabbe, Cirilo Nolasco-Hipolito, Genta Kobayashi, Kenji Sonomoto,
Ayaaki Ishizaki *
Laboratory of Microbial Technology, Faculty of Agriculture Graduate School, Kyushu Uni6ersity, Hakozaki, Higashi-ku,
Fukuoka 812-8581, Japan
Received 24 September 2000; received in revised form 28 February 2001; accepted 25 March 2001
Abstract
Three principal variables, molar ratio of methanol to oil, amount of catalyst, and reaction temperature, affecting the yield of
acid-catalyzed production of methyl ester (biodiesel) from crude palm oil were investigated. The biodiesel was then used as an
extractant in batch and continuous acetone–butanol–ethanol fermentation, and its fuel properties and that of the biodiesel–ABE
product mix extracted from the batch culture analyzed. The optimized variables, 40:1 methanol/oil (mol/mol) with 5% H2S04
(vol/wt) reacted at 95°C for 9 h, gave a maximum ester yield of 97%. Biodiesel preferentially extracted butanol, and enhanced its
production in the batch culture from 10 to 12 g l−1. The fuel properties of biodiesel and the biodiesel–ABE mix parable
to that of diesel, but their cetane numbers and the boiling points of the 90% fractions were higher. Therefore, they could
serve as e