Optimization of conversion of waste rapeseed oil with high FFA to biodiesel using response surface methodology

Xingzhong Yuan, Jia Liu, Guangming Zeng, Jingang Shi, Jingyi Tong and Guohe Huang

Renewable Energy, 2008, vol. 33, issue 7, 1678-1684

Abstract: In the present study, waste rapeseed oil with high free fatty acids (FFA) was used as feedstock for producing biodiesel. In the pretreatment step, FFA was reduced by distillation refining method. Then, biodiesel was produced by alkaline-catalyzed transesterification process, which was designed according to the 24 full-factorial central composite design. The response surface methodology (RSM) was used to optimize the conditions for the maximum conversion to biodiesel and understand the significance and interaction of the factors affecting the biodiesel production. The results showed that catalyst concentration and reaction time were the limiting conditions and little variation in their value would alter the conversion. At the same time, there was a significant mutual interaction between catalyst concentration and reaction time.

Keywords: Waste rapeseed oil; Biodiesel; Transesterification; Response surface methodology (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (25)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:33:y:2008:i:7:p:1678-1684

DOI: 10.1016/j.renene.2007.09.007

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