Lubrication Properties of Bio-Oil and Its Emulsions with Diesel OilReport as inadecuate


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


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National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China





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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. View Full-Text

Keywords: bio-oil; lubrication property; emulsion; four-ball tester; SEM; XPS bio-oil; lubrication property; emulsion; four-ball tester; SEM; XPS





Author: Qiang Lu * , Zhi-Bo Zhang, Hang-Tao Liao, Xiao-Chu Yang and Chang-Qing Dong

Source: http://mdpi.com/



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