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JSIR Vol.65 [2006] >
JSIR Vol.65(05) [May 2006] >
| Title: | Non-catalytic biodiesel fuel production with supercritical methanol technologies |
| Authors: | Saka, Shiro
Kusdiana, Dadan
Minami, Eiji |
| Keywords: | Biodiesel
Fatty acid
Hydrolysis
Methyl esterification
Oils/fats
Supercritical methanol
Transesterification
Triglyceride |
| Issue Date: | May-2006 |
| Publisher: | CSIR |
| Abstract: | Study presents that supercritical methanol has the ability to convert oils/fats consisting of triglycerides and free fatty acids (FFAs) into fatty acid methyl esters through transesterification and methyl esterification, respectively, without any catalyst. This one-step method (Saka process) is simpler process realizing shorter reaction time and higher yield of methyl esters than those of the conventional alkali-catalyzed method. To improve the biodiesel quality that satisfies the standard specification, another reaction route was also developed by the two-step method (Saka-Dadan process), which consists of hydrolysis step for oils/fats in subcritical water and subsequent methyl esterification of the hydrolyzed products of fatty acids from oils/fats in supercritical methanol. These new methods are highly tolerant against the presence of FFAs and water in oils/fats. Therefore, compared to the alkali-catalyzed method, proposed methods can be applied for various types of oils/fats and their wastes as raw materials to produce biodiesel fuel. |
| Page(s): | 420-425 |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.65(05) [May 2006]
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