Continuous production of soybean biodiesel in supercritical ethanol-water mixtures

被引：59

作者：

Vieitez, Ignacio ^{[1
]}

da Silva, Camila ^{[2
]}

Borges, Gustavo R. ^{[2
]}

Corazza, Fernanda C. ^{[2
]}

Oliveira, J. Vladimir ^{[2
]}

Grompone, Maria A. ^{[1
]}

Jachmanian, Ivan ^{[1
]}

机构：

[1] Univ Republica, Fac Quim, Dept Alimentos, Lab Grasas & Aceites, Montevideo 115711800, Uruguay

[2] Univ Reg Integrada Alto Uruguai & Missoes, Dept Food Engn, BR-99700000 Erechim, Brazil

来源：

ENERGY & FUELS | 2008年 / 22卷 / 04期

关键词：

D O I：

10.1021/ef800175e

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The reaction efficiency of soybean oil transesterification in supercritical ethanol in a continuous catalyst-free process was investigated under different water concentrations. Experiments were performed at 350 degrees C and 20 MPa, with an oil/ethanol ratio of 1:40. A fatty acid ethyl ester content of 77.5% was obtained at a flow rate of 1.5 mL/min in a water-free system, while the maximum concentration of ethyl esters reached for a water content of 10 wt % was 68.1% at a flow rate of 1.0 mL/min. Decomposition and trans-isomerization of unsaturated fatty acids were significantly affected by the flow rate, with a pronounced reduction in the ratio of C18:2/C16:0 in the final product compared to the starting oil.

引用

页码：2805 / 2809

页数：5

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