OPTIMIZATION OF BIODIESEL PRODUCTION FROM JATROPHA SEED-OIL USING MICROBIAL LIPASE-CATALYZED TRANSESTERIFICATION REACTIONS
OPTIMIZATION OF BIODIESEL PRODUCTION FROM JATROPHA SEED-OIL USING MICROBIAL LIPASE-CATALYZED TRANSESTERIFICATION REACTIONS
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Date
2011-10
Authors
ABBAS, MARY
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Abstract
The environmental concern and diminishing reserves of fossil fuels has increased the
demand for the study of biodiesel production. This study was undertaken to optimize
biodiesel production from Jatropha seed-oil using microbial lipase-catalyzed
transesterification reactions. Oils were extracted using Soxhlet extractor and the free fatty
acids (%) were evaluated using Gas chromatography (GC). The highest oil yield (>60%)
was of Jatropha seed provenances from Kebbi (Wasugu Maga Danko), Zamfara
(Dandotodaji Dandotodaji) and Kastina (Chanranchi Kuki) states. While the least oil yield
(<30%) was from Sokoto (Shagari Kajiji), Jigawa (Birnin Kudu) and Zamfara (Magazu 2
Tsafe) states. The fatty acids found in both non-transesterified and the transesterified
Jatropha seed-oil provenances were linoleic, oleic, palmitic methyl ester, and stearic acids
as the dominant fatty acids in variable compositions. Also, ecosanoic, palmitic and
palmitoleic acids were the least fatty acids present. Fatty acid methyl esters in better
composition were found in the transesterified Jatropha seed oil compared to those in the
non-transesterified Jatropha curcas seed oil. The study revealed fatty acids profile which
could be useful as feedstock for biodiesel and other industrial applications. It could also be
concluded that transesterification of Jatropha seed-oil by enzymatic catalysis improved the
quality of biodiesel production.
Description
A RESEARCH THESIS SUBMITTED TO THE
POSTGRADUATE SCHOOL,
AHMADU BELLO UNIVERSITY, ZARIA
NIGERIA
IN PARTIAL FULFILLMENT FOR THE AWARD
OF MASTER DEGREE IN
BIOCHEMISTRY
DEPARTMENT OF BIOCHEMISTRY
FACULTY OF SCIENCE
AHMADU BELLO UNIVERSITY, ZARIA,
NIGERIA
OCTOBER, 2011
Keywords
OPTIMIZATION,, BIODIESEL PRODUCTION,, JATROPHA SEED-OIL,, USING MICROBIAL LIPASE-CATALYZED,, TRANSESTERIFICATION REACTIONS.