Energies 2012, 5(3), 741-751; doi:10.3390/en5030741
Article

Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil

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Received: 23 January 2012; in revised form: 4 March 2012 / Accepted: 6 March 2012 / Published: 14 March 2012
(This article belongs to the Special Issue Biomass and Biofuels 2012)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Bio-oil from fast pyrolysis of biomass is a low-grade liquid fuel, which can be upgraded through the emulsification with diesel oil. In this study, we prepared two rice husk bio-oil samples with different solid char contents and three bio-oil/diesel-oil emulsion samples with the bio-oil content of 10 wt%, 30 wt% and 50 wt%, respectively. The lubrication properties of these oil samples were evaluated by a four-ball tester. The morphologies of the worn ball surface were observed by scanning electron microscope (SEM). The chemical states of the elements on the worn surface and non-worn surface were analyzed by X-ray photoelectron spectroscope (XPS). The results showed that the bio-oil possessed better extreme-pressure, anti-wear and friction-reducing properties than the commercial diesel oil (number zero). The solid char particles in the bio-oil could improve its lubrication performance. Moreover, the lubrication ability of the emulsions would be enhanced with the increasing of the bio-oil content in the emulsions.
Keywords: bio-oil; lubrication property; emulsion; four-ball tester; SEM; XPS
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MDPI and ACS Style

Lu, Q.; Zhang, Z.-B.; Liao, H.-T.; Yang, X.-C.; Dong, C.-Q. Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil. Energies 2012, 5, 741-751.

AMA Style

Lu Q, Zhang Z-B, Liao H-T, Yang X-C, Dong C-Q. Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil. Energies. 2012; 5(3):741-751.

Chicago/Turabian Style

Lu, Qiang; Zhang, Zhi-Bo; Liao, Hang-Tao; Yang, Xiao-Chu; Dong, Chang-Qing. 2012. "Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil." Energies 5, no. 3: 741-751.

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