Adsorption of Free Fatty Acid (FFA) in Low-Grade Cooking Oil Used Activated Natural Zeolite as Adsorbent

International Conference on Chemistry and Material Science 2017

化学;材料科学

Ayu Putranti, Monika Larasati Tres^1 ; Wirawan, Sang Kompiang^1 ; Bendiyasa, I Made^1

Department of Chemical Engineering, Universitas Gadjah Mada, Yogyakarta

55281, Indonesia^1

关键词: Activated zeolites;    Adsorption equilibria;    Free fatty acid;    Freundlich models;    NaOH concentration;    NaOH solutions;    Natural zeolites;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012085/pdf
DOI  :  10.1088/1757-899X/299/1/012085

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Adsorption of free fatty acid (FFA) in low-grade cooking oil using active natural zeolite adsorbent was done as an effort to improve the quality of low-grade cooking oil so that it can fulfill the standard of fried oil which has been set on SNI 01-3741-2013. Adsorption was carried out with natural zeolite which activated with HCl and NaOH solution followed by the calcination process. The results showed that the NaOH activated zeolite decreased FFA content in low-grade cooking oil more than the HCl activated natural zeolite, with optimum NaOH concentration was 0.75 M. In the adsorption equilibrium analysis with temperature variation (25 °C, 40 °C, 80 °C ), obtained that adsorption of FFA with NaOH activated natural zeolite follows Adsorption Isotherm Freundlich Model with equilibrium constant value was 20,5873; 0,9629 dan 0,8053.