The optimization of the production of methyl esters from corn oil using barium hydroxide as a heterogeneous catalyst

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[1] Mustata, Fanica
[2] Bicu, Ioan
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Mustata, F. (fanicamustata@yahoo.com) | 1600年 / Springer Verlag卷 / 91期
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In recent years; vegetable oils; as renewable raw materials; became a promising feedstock for chemicals and biodiesel production. The main products derived from oils are esters of fatty acids; especially methyl esters; obtained by their transesterification with methanol; in presence of acid or alkaline catalysts. The use of such catalysts implies the need for washing operations; which leads to environmental pollution. In the present paper; the response surface methodology based on a central composite design; has been developed to optimize the process of transesterification of corn oil. Ba(OH)2 in presence of diethyl ether was used as catalyst. A quadratic polynomial equation was obtained. It correlates the reaction parameters [methanol/oil molar ratio (xr); reaction time (xt) and catalyst concentration (xc)] with methyl esters yield. Analysis of variance analysis showed that only methanol/oil molar ratio and catalyst concentration have had the most significant influences on the conversion. The maximum methyl esters yield was obtained using the following optimum parameters: methanol/corn oil ratio of 11.32; reaction time of 118 min and catalyst concentration of 3.6 wt%. © 2014 AOCS;
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