Development of an efficient purification process of low-grade waste cooking oil by melt crystallization

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K06832
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: University of Hyogo
• Principal Investigator: Yamamoto Takuji 兵庫県立大学, 工学研究科, 教授 (30358288)
• Co-Investigator(Kenkyū-buntansha): 伊藤 和宏 兵庫県立大学, 工学研究科, 准教授 (80347525)
• Research Collaborator: MAEDA Kouji ; KURAMOCHI Hidetoshi ; TAYAKOUT-FAYOLLE Mélaz
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: モデル廃食油 / テーラー渦 / 溶質分配理論

Outline of Final Research Achievements

To separate a saturated fatty acid from an unsaturated fatty acid contained in low-grade waste cooking oil (WGO), we performed melt crystallization employing an annular-cylindrical-type apparatus. In this study, we examined the following three items: (i) melt crystallization of binary mixture of fatty acids as model WGO, (ii) elucidation of formation mechanism of Taylor vortex in the annular space of a melt crystallization bath, (iii) building of a solute distribution theory using ternary mixture of fatty acids as model WGO.

Free Research Field

工学（プロセス・化学工学）

Academic Significance and Societal Importance of the Research Achievements

本研究の実施によって，バイオ燃料精製を目的とした融液晶析における基幹技術と基盤となる理論を確立できた。また，本研究で確立した技術は低品位廃食油の再資源化のために不可欠な精製技術であるため，石油代替資源としての低品位廃食油のエネルギー利用に加えて，炭酸ガス排出量削減などの環境面での波及効果も期待される。