Abstract:
Rice bran wax (RBW) is the major byproduct of rice bran oil production, which can be directly
used in several applications such as cosmetics, personal care products, and pharmaceuticals.
The wax esters in RBW, containing long-chain fatty acids and fatty alcohols, could be used in
biolubricant preparation. In this study, a saponification reaction was initially performed by
treating RBW with 30% potassium hydroxide in isopropanol to obtain fatty acid potassium salt.
Subsequently, this salt was treated with 30% HCl to obtain fatty acids via a substitution
reaction, while fatty alcohols from the initial reaction were discarded. Following this, the
obtained crude fatty acids were treated with 5% methanol in the presence of sulfuric acid as a
catalyst to produce crude fatty acid methyl esters (FAME). Fourier-transform infrared
spectroscopy (FTIR) confirms the presence of fatty acids in the RBW and the crude fatty acids
obtained after the saponification and substitution reactions. FTIR was also used to characterize
the crude FAMEs. In the future, a transesterification process could be then performed using the
crude FAME and trimethylolpropane (TMP) to obtain TMP-esters, which can be utilized as a
biolubricant precursor.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2024
Modified:
2025-03-10
Issued:
2025-03-10
BibliograpyCitation :
In Thai Institute of Chemical Engineering and Applied Chemistry. The 33st Thai Institute of Chemical Engineering and Applied Chemistry International Conference (TIChE 2024) (pp.472-479). Bangkok : Thai Institute of Chemical Engineering And Applied Chemistry