疎水性膜を用いた廃棄食用油脂の再生技術の開発
2004 年 29 巻 1 号 p. 26-33
詳細
2004 年 29 巻 1 号 p. 26-33
A study was carried out to improve the quality of used frying oils and to assess the feasibility of recycling as edible oils using a membrane process. Experiments were conducted with used frying oils in a flat membrane batch cell using hydrophobic polymeric membranes. NTGS-2200 membrane, nonporous denser membrane, improved the color and viscosity of the used frying oil to the extent of fresh oil, and also reduced the total polar materials and oxidation products, which normally lead to the deterioration of frying oils. The membrane process was effective for improving the overall quality. Transport mechanism in the membrane is mainly controlled by solution-diffusion effect. Preferential permeation constituents in the membrane would be more non-polar and small-size constituents. The permeate flux must be improved for commercial application.
