Low Temperature Glycerolysis as a High FFA Pre-Treatment Method for Biodiesel Production

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dc.contributor.authorKombe, Godlisten G.
dc.contributor.authorTemu, Abraham K.
dc.contributor.authorRajabu, Hassan M.
dc.contributor.authorMrema, Godwill D.
dc.contributor.authorLee, Keat Teong
dc.date.accessioned2016-07-09T20:39:16Z
dc.date.available2016-07-09T20:39:16Z
dc.date.issued2013
dc.description.abstractA novel low temperature glycerolysis process for lowering free fatty acid (FFA) in crude jatropha oil for alkali catalyzed transesterification has been developed. The response surface methodology (RSM) based on central composite design was used to model and optimize the glycerolysis efficiency under three reaction variables namely; reaction time, temperature and glycerol to oil mass ratio. The optimum conditions for highest glycerolysis efficiency of 98.67% were found to be temperature of 65℃, reaction time of 73 minutes and 2.24 g/g glycerol to oil mass ratio. These conditions lower the high free fatty acid of crude jatropha oil from 4.54% to 0.0654% which is below 3% recommended for alkali catalyzed transesterification. The pre-treated crude jatropha oil was then transesterified by using homogeneous base transesterification resulting to a conversion of 97.87%. The fuel properties of jatropha biodiesel obtained were found to be comparable to those of ASTM D6751 and EN 14214 standards. The process can also utilize the crude glycerol from the transesterification reaction, hence lowering the cost of biodiesel. The glycerolysis is easier implemented than acid esterification thereby avoiding the need for neutralization and alcohol removal step.en_US
dc.identifier.citationG. Kombe, A. Temu, H. Rajabu, G. Mrema and K. Lee, "Low Temperature Glycerolysis as a High FFA Pre-Treatment Method for Biodiesel Production," Advances in Chemical Engineering and Science, Vol. 3 No. 4, 2013, pp. 248-254. doi: 10.4236/aces.2013.34032.en_US
dc.identifier.doi10.4236/aces.2013.34032
dc.identifier.issn2160-0392
dc.identifier.issn2160-0406
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3030
dc.language.isoenen_US
dc.publisherScientific Researchen_US
dc.subjectBiodieselen_US
dc.subjectGlycerolysisen_US
dc.subjectFree Fatty Aciden_US
dc.subjectRe-Esterificationen_US
dc.titleLow Temperature Glycerolysis as a High FFA Pre-Treatment Method for Biodiesel Productionen_US
dc.typeJournal Article, Peer Revieweden_US
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