Modelling the Kinetics of Jatropha Oil Transesterification

Simple item page
dc.contributor.authorApita, Aldo Okullo
dc.contributor.authorTemu, Abraham K.
dc.date.accessioned2016-07-09T20:10:43Z
dc.date.available2016-07-09T20:10:43Z
dc.date.issued2015-01
dc.description.abstractKinetics of a chemical reaction provides an important means of determining the extent of the reaction and in reactor designs. Transesterification of jatropha oil with methanol and sodium hydroxide as a catalyst was conducted in a well mixed reactor at different agitation speeds between 600 and 800 rpm and temperature range between 35°C and 65°C. The effect of variation of temperature and mixing intensity on rate constants were studied. The initial mass transfer controlled stage was considered negligible using the above impeller speeds and second order mechanism was considered for the chemically controlled kinetic stage. Samples were collected from the reaction mixture at specified time intervals and quenched in a mixture of tetrahydrofuran (THF) and sulphuric acid. The mixture was centrifuged at 2000 rpm for 15 minutes and the methyl ester was separated from the glycerol. The ester was washed with warm water (50°C), dried and analysed using gas chromatography coupled with flame ionization detector (GC/FID) to determine free and total glycerine and methyl ester. A mathematical model was fitted using second order rate law. High temperature and high mixing intensity increased reaction rates. The model fitted well with a high correlation coefficient (R2) of 0.999.en_US
dc.identifier.citationOkullo, A. and Temu, A. (2015) Modelling the Kinetics of Jatropha Oil Transesterification. Energy and Power Engineering, 7, 135-143. doi: 10.4236/epe.2015.74013.en_US
dc.identifier.doi10.4236/epe.2015.74013
dc.identifier.issn1949-243X
dc.identifier.issn1947-3818
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3019
dc.language.isoenen_US
dc.publisherScientific Researchen_US
dc.subjectSecond Order Kineticsen_US
dc.subjectRate Constantsen_US
dc.subjectJatropha Oilen_US
dc.subjectTransesterificationen_US
dc.titleModelling the Kinetics of Jatropha Oil Transesterificationen_US
dc.typeJournal Article, Peer Revieweden_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Modelling the Kinetics of Jatropha Oil.pdf
Size:
399.35 KB
Format:
Adobe Portable Document Format
Description:
Full Text
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Department of Chemical and Mining Engineeering