Synthesis of biodiesel using potassium fluoride (KF) supported by hydrotalcite and process optimization by Box-Behnken design

被引：3

作者：

Singh B. ^{[1
]}

Birla A. ^{[2
]}

Upadhyay S.N. ^{[2
]}

Yaakob Z. ^{[3
]}

Sharma Y.C. ^{[1
]}

机构：

[1] Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi

[2] Department of Chemical Engineering and Technology, Institute of Technology, Banaras Hindu University, Varanasi

[3] Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Selangor, 43600, UKM Bangi

来源：

Biomass Conversion and Biorefinery | 2012年 / 2卷 / 04期

关键词：

Biodiesel; Hydrotalcite; KF; Optimization; Transesterification;

D O I：

10.1007/s13399-012-0059-x

中图分类号：

学科分类号：

摘要：

Biodiesel has been developed using a heterogeneous catalyst potassium fluoride (KF) supported on hydrotalcite (HT) and waste frying oil (WFO) as feedstock. Hydrotalcite was synthesized by co-precipitation method using mixture of Mg(NO3)2·6H2O and Al(NO3)2·9H2O slowly added to a solution containing NaOH and Na2CO3 and calcined at 500 °C. KF was impregnated on hydrotalcite at KF/HT load ratio of 80:100 by addition of a small amount of water. Biodiesel was developed using KF/HT as heterogeneous catalyst by transesterification. Box-Behnken Design using Minitab 15. 1 Statistical Software and Design-Expert (Demo version 8. 0. 6. 1) software were used as statistical tool for design of experiments and optimization of fatty acid methyl ester yield. A high yield and conversion of biodiesel was obtained by optimization of variables affecting the reaction. The variables affected the reaction in the priority order of: catalyst amount ≫ molar ratio (methanol to oil) > reaction time. A 12:1 methanol to WFO molar ratio, 2. 5 wt.% of catalyst at 60 °C in 1 h reaction time gave a high fatty acid methyl ester yield of >98 %. The quantitative analysis of the product (i. e., biodiesel) was done on a Fourier-transform-nuclear magnetic resonance spectrometer. © 2012 Springer-Verlag.

引用

页码：317 / 325

页数：8

共 22 条

[21]

Oner C., Altun S., Biodiesel production from inedible animal tallow and an experimental investigation of its use as alternative fuel in a direct injection diesel engine, Appl Energ, 86, pp. 2114-2120, (2009)

[22]

Biodiesel handling and use guide, pp. 1-56, (2009)

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