TY - JOUR
T1 - Biodiesel production from rice bran oil and supercritical methanol
AU - Kasim, Novy Srihartati
AU - Tsai, Tsung Han
AU - Gunawan, Setiyo
AU - Ju, Yi Hsu
N1 - Funding Information:
This work was supported by a grant (97-ET-7-011-001-ET) provided by the National Science Council of Taiwan.
PY - 2009/4
Y1 - 2009/4
N2 - In this study, production of biodiesel from low cost raw materials, such as rice bran and dewaxed-degummed rice bran oil (DDRBO), under supercritical condition was carried out. Carbon dioxide (CO2) was employed as co-solvent to decrease the supercritical temperature and pressure of methanol. The effects of different raw materials on the yield of biodiesel production were investigated. In situ transesterification of rice bran with supercritical methanol at 30 MPa and 300 °C for 5 min was not a promising way to produce biodiesel because the purity and yield of fatty acid methyl esters (FAMEs) obtained were 52.52% and 51.28%, respectively. When DDRBO was reacted, the purity and yield were 89.25% and 94.84%, respectively. Trans-FAMEs, which constituted about 16% of biodiesel, were found. They were identified as methyl elaidate [trans-9], methyl linoleaidate [trans-9, trans-12], methyl linoleaidate [cis-9, trans-12], and methyl linoleaidate [trans-9, cis-12]. Hydrocarbons, which constituted about 3% of the reaction product, were also detected.
AB - In this study, production of biodiesel from low cost raw materials, such as rice bran and dewaxed-degummed rice bran oil (DDRBO), under supercritical condition was carried out. Carbon dioxide (CO2) was employed as co-solvent to decrease the supercritical temperature and pressure of methanol. The effects of different raw materials on the yield of biodiesel production were investigated. In situ transesterification of rice bran with supercritical methanol at 30 MPa and 300 °C for 5 min was not a promising way to produce biodiesel because the purity and yield of fatty acid methyl esters (FAMEs) obtained were 52.52% and 51.28%, respectively. When DDRBO was reacted, the purity and yield were 89.25% and 94.84%, respectively. Trans-FAMEs, which constituted about 16% of biodiesel, were found. They were identified as methyl elaidate [trans-9], methyl linoleaidate [trans-9, trans-12], methyl linoleaidate [cis-9, trans-12], and methyl linoleaidate [trans-9, cis-12]. Hydrocarbons, which constituted about 3% of the reaction product, were also detected.
KW - In situ transesterification
KW - Rice bran
KW - Rice bran oil
KW - Supercritical methanol
UR - http://www.scopus.com/inward/record.url?scp=58549089163&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2008.11.041
DO - 10.1016/j.biortech.2008.11.041
M3 - Article
C2 - 19119000
AN - SCOPUS:58549089163
SN - 0960-8524
VL - 100
SP - 2399
EP - 2403
JO - Bioresource Technology
JF - Bioresource Technology
IS - 8
ER -