Noor, Hindryawati and Gaanty Pragas, Maniam and Karim, Md. Rezaul and K. F., Chong (2014) Transesterification of Used Cooking Oil Over Alkali Metal (Li, Na, K) Supported Rice Husk Silica as Potential Solid Base Catalyst. International Journal of Engineering Science and Technology, 17 (2). pp. 95-103. ISSN 2215-0986. (Published)
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Abstract
Investigation was conducted on three alkali metals (Li, Na, and K) supported by rice husk silica as catalysts for methyl esters production. A simple pseudo-heterogeneous transesterification process of used cooking oil with methanol was conducted to produce methyl esters using calcined alkali metal supported rice husk silica as a solid catalyst. Alkali metal silicate catalysts showed longer lasting activity than the traditional alkali catalysts. The optimum conditions for the process were: alkali metals silicate calcination temperature 500 °C, time 3 h; catalyst amount 3%; methanol to oil molar ratio 9:1; and a reaction temperature of 65 °C. The process was able to transesterify oil to methyl esters in the range of 96.5–98.2% in 1 h for all series. The catalyst is able to tolerant free fatty acid and moisture up to 1.25% and 1.75%, respectively. The catalyst was easily separated from the reaction mixture by filtration and able to reuse six times. The final product met the selected biodiesel fuel properties in accordance with European Standard (EN) 14214.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Used cooking oil; Transesterification; Alkali metal; Rice husk silica; Pseudo-heterogeneous catalyst; Methyl ester |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 30 Sep 2014 07:46 |
| Last Modified: | 02 Apr 2019 04:55 |
| URI: | http://umpir.ump.edu.my/id/eprint/6436 |
| Download Statistic: | View Download Statistics |
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