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Home / Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Volume 38, Number 8

Tribological behavior of diesel/biodiesel blend from waste cooking oil and ethanol

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Authors: Hu; Wang; Chen; Xu; Hu

Source: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Volume 38, Number 8, 17 April 2016, pp. 1062-1067(6)

Publisher: Taylor and Francis Ltd

DOI: https://doi.org/10.1080/15567036.2011.653622

One kind of novel biodiesel waste cooking oil ethyl ester (WCOEE) was prepared via transesterfication reaction between waste cooking oil and ethanol. The tribological behavior of diesel/WCOEE blend was evaluated with a four-ball tribometer. The wear resistance, extreme pressure, and friction reduction of the blend were improved with increasing WCOEE. The optimal content of WCOEE in the blend was 20 vol%. It was also found that free fatty acids (FFAs) had a positive effect on the wear resistance of blend. The lubrication improvement of the blend was ascribed to the formation of polyester film and high polarity of fatty acid ethyl ester.

Keywords: Biodiesel; ethanol; free fatty acid; tribology; waste cooking oil

Document Type: Research Article

Affiliations: Institute of Tribology, Hefei University of Technology, Hefei, China

Publication date: 17 April 2016

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