Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 20, 2023 - September 21, 2023
The aim in this study is to predict of the separability of impurities and fatty acid methyl esters by the Hansen solubility parameter analysis(HSP). In this report, in the wet refining process of biodiesel fuel(BDF) by washing with water, the water solubility and separability of residual triglycerides due to incomplete reaction, glycerin by-product produced by the transesterification reaction, methanol used at the transesterification reaction, and plant sterols derived from raw fats and oils were predicted. In the analysis, the used cooking oil methyl ester(UCOME), the used cooking oil(UCO), the oleic methyl ester(OME) and water were used as solute in HSP. The solubility parameters of solutes and solvents were cited from literatures. It was found that methanol and glycerin are easily soluble in water. On the other hand, the triglyceride component cannot be removed by washing with water, as the result, it remains in the methyl ester component. Therefore, it is necessary to complete the reaction process before washing with water in order to increase the purity of the product.
