Production of biodiesel from high free fatty acid Karanja (Pongamia pinnata) oil

被引：294

作者：

Naik, Malaya ^{[1
]}

Meher, L. C. ^{[2
]}

Naik, S. N. ^{[2
]}

Das, L. M. ^{[1
]}

机构：

[1] Indian Inst Technol, Ctr Energy Studies, New Delhi 110016, India

[2] Indian Inst Technol, Ctr Rural & Dev & Technol, New Delhi 110016, India

来源：

BIOMASS & BIOENERGY | 2008年 / 32卷 / 04期

关键词：

Karanja oil; methanolysis; transesterification; biodiesel; methyl esters;

D O I：

10.1016/j.biombioe.2007.10.006

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Non-edible oil contains several unsaponifiable and toxic components, which make them unsuitable for human consumption. Karanja (Pongamia pinnata) is an underutilized plant which is grown in many parts of India. Sometimes the oil is contaminated with high free fatty acids (FFAs) depending upon the moisture content in the seed during collection as well as oil expression. The present study deals with production of biodiesel from high FFA Karanja oil because the conventional alkali-catalyzed route is not the feasible route. This paper discusses the mechanism of a dual process adopted for the production of biodiesel from Karanja oil containing FFA up to 20%. The first step is acid-catalyzed esterification by using 0.5% H2SO4, alcohol 6:1 molar ratio with respect to the high FFA Karanja oil to produce methyl ester by lowering the acid value, and the next step is alkali-catalyzed transesterification. The yield of biodiesel from high FFA Karanja oil by dual step process has been observed to be 96.6-97%. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：354 / 357

页数：4

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