A novel green process on the purification of crude Jatropha oil with large permeate flux enhancement

[Display omitted] •Two-step membrane filtration process was utilized to replace traditional refining process.•More energy and chemicals can be saved by these processes without the loss of neutral oil.•MF pretreated Jatropha oil shows a higher permeate flux than the degumming Jatropha oil does.•The p...

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Bibliographic Details
Published in:Fuel (Guildford) 2013-09, Vol.111, p.180-185
Main Authors: Liu, Kuan-Ting, Liang, Fang-Ling, Lin, Yi-Feng, Tung, Kuo-Lun, Chung, Tsair-Wang, Hsu, Shih-Hong
Format: Article
Language:English
Subjects:
Applied sciences
Biofuels
Carbon
Crude oil
Degumming
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Filtration
Flux
Fuels
Jatropha
Jatropha oil
Membranes
Microfiltration
Pretreatment
Purification
Ultrafiltration
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Summary:[Display omitted] •Two-step membrane filtration process was utilized to replace traditional refining process.•More energy and chemicals can be saved by these processes without the loss of neutral oil.•MF pretreated Jatropha oil shows a higher permeate flux than the degumming Jatropha oil does.•The physical properties of crude Jatropha oil were greatly improved after these processes. Traditional oil purification process has some drawbacks, such as high energy cost, high chemicals demand and the loss of neutral oil. In this study, for the first time, an alternative process was introduced, which combines microfiltration (MF) pretreatment for oil dewaxing and ultrafiltration (UF) purification process for phospholipid removal. More energy and chemicals can be saved by these processes without the loss of neutral oil. It was found that crude Jatropha oil after MF pretreatment shows a higher permeate flux than the degummed Jatropha oil does. After combining two-step membrane filtration process, the physical properties of crude Jatropha oil were greatly improved. The kinematic viscosity was decreased from 28mm2/s to 25mm2/s, while carbon residue was also reduced from 5.5wt% to 2.9wt%. The newly developed two-step membrane filtration process in this study can be effectively applied for the purification of crude Jatropha oil used for biofuels.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2013.04.049