Removal of free fatty acid in waste frying oil by esterification with methanol on zeolite catalysts

被引：115

作者：

Chung, Kyong-Hwan ^{[1
]}

Chang, Duck-Rye ^{[2
]}

Park, Byung-Geon ^{[3
]}

机构：

[1] Chonnam Natl Univ, Ctr Funct Nano Fine Chem, Kwangju 500757, South Korea

[2] Korea Inst Ind Technol, Solar Energy R&D Team, Gwangju Res Ctr, Kwangju 500480, South Korea

[3] Kwangju Womens Univ, Dept Food & Nutr, Kwangju 506713, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 16期

关键词：

free fatty acid removal; esterification; zeolite; waste frying oil; acidity;

D O I：

10.1016/j.biortech.2008.02.031

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The removal of free fatty acid (FFA) in waste frying oil by esterification with methanol was conducted using various zeolite catalysts. The ZSM-5 (MFI), mordenite (MOR), faujasite (FAU), beta (BEA) zeolites, and silicalite were employed with different Si/Al molar ratio in the reaction. The effects of acidic properties and pore structure of the zeolite catalysts were discussed relating to the conversion of the FFA. The MFI zeolite induced an improvement of the removal efficiency of FFA by cracking to the FFA in its pore structure due to its narrow pore mouth. The catalytic activity for FFA removal was lowered with decreasing of acid strength of the zeolites. The strong acid sites of zeolites induced the high conversion of FFA comparatively. The acid strength and pore structure of acidic zeolites affected the catalytic activity in FFA removal. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：7438 / 7443

页数：6

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