Browsing by Author "LALISA TESHALE"

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    PRODUCTION OF BIOLUBRICANT FROM CASTOR Oil
    (Wolkite University, 2023-05-18) ALEMAYEHU LELISA,; DIRIBA GADIsa,; AWLET DAWUD,; KIDIST ENDALE,; LALISA TESHALE
    Bio-lubricant is renewable substitute for petroleum based lubricant,which is non toxic,biodegradable, and renewable source. If reacting castor oil with methanol or ethanol with the help of NaOH or KOH as a catalyst in the esterification process to produce mono ester that are termed as fatty acid methyl ester.That process affected by mode of reaction, type of alcohol,ratio of alcohol to oil and catalyst. After production to know and characterize the physicochemical property (flash point,pour point, viscosity, iodine value) of bio-lubricant is necessary. The production of bio-lubricant from castor oil in order to utilize renewable resource and solve environmental issue related to petroleum lubricant.When compared with petroleum based lubricant,it have low toxicity,high viscosity,highly biodegeradeble and cost saving on disposal storage. This paper carried out experimental study, through extraction and characterization of both refined castor oil and bio-lubricant. From parameters extraction time and temperature affects the yield of oil, when time of extraction increased result to increase oil yield and small value of temperature also gain small amount of oil, so maximum yield of castor oil obtained at 78℃ for ethanol solvent and 65℃ for methanol solven