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Biolubricant production from palm stearin through enzymatic transesterification method

N., Afifah A. and S., Syahrullail and Wan Azlee, Nur Izyan and Che Sidik, Nor Azwadi and W. J., Yahya and Abd. Rahim, Erween (2019) Biolubricant production from palm stearin through enzymatic transesterification method. Biochemical Engineering Journal, 148 . pp. 178-184. ISSN 1369-703X

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Official URL: http://dx.doi.org/10.1016/j.bej.2019.05.009


The present study aims to develop environmentally benign lubricant from by-product of palm oil processing through enzymatic reaction. Candida antartica lipase was employed as catalyst to transesterified reaction between palm stearin and methanol in a solvent-free system. The reaction parameters were varied in terms of molar ratio of methanol-to-palm stearin (3:1 to 8:1), temperature (between 40 and 70 °C), time (2–12 h)and concentration of catalyst (from 2 to 10 wt.%). Enzymatic transesterification demonstrated around 95.26% maximum yield of palm stearin methyl ester under the following conditions: 4:1 methanol-to-PS molar ratio, reaction temperature of 60 °C, reaction time of 8 h and 6.0 wt. % of lipase concentration. The Structural modification of palm stearin resulted in improvement in both physicochemical and tribological properties. The produced biolubricant demonstrated superior viscosity index (>120)and friction properties over commercial mineral oil-based lubricant. This study showed that lubricant derived from palm stearin has a great potential to be used as a base stock in regard to favourable biodegradability and tribological performance.

Item Type:Article
Uncontrolled Keywords:immobilised lipase, palm stearin, transesterification
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:89453
Deposited By: Yanti Mohd Shah
Deposited On:22 Feb 2021 14:07
Last Modified:22 Feb 2021 14:07

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