|
Post-treatment for high content of ethyl esterfrom esterification of palm fatty acid distillate |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. Waritorn Kanjaikaew 2. Chakrit Tongurai 3. Sininart Chongkhong |
| Title | Post-treatment for high content of ethyl esterfrom esterification of palm fatty acid distillate |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2564 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 43 |
| Journal No. | 6 |
| Page no. | 1786-1792 |
| Keyword | post-treatment, palm fatty acid distillate, esterification, ethyl ester, kinetics |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Ethyl ester from palm fatty acid distillate is of interest as biodiesel. However, the standard biodiesel quality free fattyacid (FFA) content is hard to achieve due to reversible reactions at low FFA content. The post-treatment of ethyl ester (1.5 wt%FFA) by esterification was investigated using homogeneous catalysts or heterogeneous catalysts, and comparing the short-chainalcohols ethanol and methanol. An approximate equilibrium was attained more easily when using methanol or the heterogeneouscatalysts, and the goal of 0.25 wt% FFA content was achieved. First-order reaction kinetics were postulated, and three alternativekinetic models were formulated for cases with large excess in some reactants. The simplest such model gave the forward rateconstant as 13.32 which was higher than that of the reverse reaction. The water generated during esterification contributed withtotal initial water, which also was a key factor affecting the water balance. |
