کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
682819 888991 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ferric sulphate catalysed esterification of free fatty acids in waste cooking oil
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Ferric sulphate catalysed esterification of free fatty acids in waste cooking oil
چکیده انگلیسی

In this work, the esterification of free fatty acids (FFA) in waste cooking oil catalysed by ferric sulphate was studied as a pre-treatment step for biodiesel production. The effects of reaction time, methanol to oil ratio, catalyst concentration and temperature on the conversion of FFA were investigated on a laboratory scale. The results showed that the conversion of FFA reached equilibrium after an hour, and was positively dependent on the methanol to oil molar ratio and temperature. An optimum catalyst concentration of 2 wt.% gave maximum FFA conversion of 59.2%. For catalyst loadings of 2 wt.% and below, this catalysed esterification was proposed to follow a pseudo-homogeneous pathway akin to mineral acid-catalysed esterification, driven by the H+ ions produced through the hydrolysis of metal complex [Fe(H2O)6]3+ (aq).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 19, October 2010, Pages 7338–7343
نویسندگان
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