Optimization of two step karanja biodiesel synthesis under microwave irradiation

被引：66
作者：
Kamath, H. Venkatesh [1 ]
Regupathi, I. [1 ]
Saidutta, M. B. [1 ]
机构：
[1] NITK Surathkal, Dept Chem Engn, Surathkal 575025, Karnataka, India
来源：
FUEL PROCESSING TECHNOLOGY | 2011年 / 92卷 / 01期
关键词：
Karanja; Optimization; Microwave; Free fatty acid; Transesterification; OIL; TRANSESTERIFICATION;
D O I：
10.1016/j.fuproc.2010.09.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The free fatty acid of crude karanja oil (Pongamia pinnata) was reduced and biodiesel was synthesized from pretreated oil under microwave irradiation. The process variables such as irradiation time, methanol-oil ratio and sulfuric acid concentration for pretreatment step; irradiation time, methanol-oil ratio and KOH concentration were optimized through the Box-Behnken experimental design. The free fatty acid of crude karanja oil was reduced to 1.11 +/- 0.07% with an optimal combination of 190 s irradiation time (180W), 33.83 (w/w)% methanol-oil ratio and 3.73 (w/w)% sulfuric acid concentration. An optimal combination of 150 s irradiation time, 33.4 (w/w)% methanol-oil ratio and 1.33 (w/w)% KOH concentration yielded 89.9 +/- 0.3% biodiesel. The model was validated by conducting experiments at optimal design conditions. The present work confirmed that the microwave energy has a significant effect on esterification and transesterification reaction. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 105
页数：6
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