In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel

Jatropha curcas L. (JCL) is an emerging non-edible oil plant which has a high potential as the feedstock for biodiesel production. In this study, supercritical in situ extraction and transesterification process (SET) developed from process intensification was applied together with methanol for the p...

Full description

Saved in:

Bibliographic Details
Main Author:	Steven, Lim
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TP1-1185 Chemical technology
Online Access:	http://eprints.usm.my/46243/1/Steven%20Lim24.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.46243
record_format	uketd_dc
spelling	my-usm-ep.462432020-02-17T04:47:04Z In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel 2013-12 Steven, Lim TP1-1185 Chemical technology Jatropha curcas L. (JCL) is an emerging non-edible oil plant which has a high potential as the feedstock for biodiesel production. In this study, supercritical in situ extraction and transesterification process (SET) developed from process intensification was applied together with methanol for the production of biodiesel from JCL in a high pressure batch reactor. Raw material characterizations were performed on the JCL oil seeds in this study to determine their physical and chemical properties. Pre-treatments of the solid seeds including solid particle size (0.5-2.0 mm), de-shelling and heat treatment at five different temperatures (45°C-105°C) and two different durations (12h and 24h) were also investigated. It was discovered that de-shelling of JCL seeds had highest influence on the product yield, followed by sieving and heat treatment. SET process was conducted in the process temperature range of 240°C to 320°C, process pressure of 4.0 MPa to 24.0 MPa, methanol to solid seeds ratio (SSR) of 2.5 ml/g to 15.0 ml/g, space loading of 90.0 ml/g to 18.0 ml/g, n-hexane to solid seeds ratio of 0 ml/g to 6.0 ml/g, process holding time of 0 min to 35 min and stirring speed of 0 rpm to 500 rpm. Co-solvents which were being employed in the process to reduce the process severity were n-pentane, n-heptane, tetrahydrofuran (THF), toluene, nitrogen gas (N2) and carbon dioxide gas (CO2). Their amounts were varied from 1.0 ml/g to 5.0 ml/g for liquid and 10 bar to 50 bar for gases. It was found that n-pentane and CO2 could further reduce the optimum operating temperature and amount of methanol for SET process due to promoting higher miscibility between reactants. 2013-12 Thesis http://eprints.usm.my/46243/ http://eprints.usm.my/46243/1/Steven%20Lim24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TP1-1185 Chemical technology
spellingShingle	TP1-1185 Chemical technology Steven, Lim In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
description	Jatropha curcas L. (JCL) is an emerging non-edible oil plant which has a high potential as the feedstock for biodiesel production. In this study, supercritical in situ extraction and transesterification process (SET) developed from process intensification was applied together with methanol for the production of biodiesel from JCL in a high pressure batch reactor. Raw material characterizations were performed on the JCL oil seeds in this study to determine their physical and chemical properties. Pre-treatments of the solid seeds including solid particle size (0.5-2.0 mm), de-shelling and heat treatment at five different temperatures (45°C-105°C) and two different durations (12h and 24h) were also investigated. It was discovered that de-shelling of JCL seeds had highest influence on the product yield, followed by sieving and heat treatment. SET process was conducted in the process temperature range of 240°C to 320°C, process pressure of 4.0 MPa to 24.0 MPa, methanol to solid seeds ratio (SSR) of 2.5 ml/g to 15.0 ml/g, space loading of 90.0 ml/g to 18.0 ml/g, n-hexane to solid seeds ratio of 0 ml/g to 6.0 ml/g, process holding time of 0 min to 35 min and stirring speed of 0 rpm to 500 rpm. Co-solvents which were being employed in the process to reduce the process severity were n-pentane, n-heptane, tetrahydrofuran (THF), toluene, nitrogen gas (N2) and carbon dioxide gas (CO2). Their amounts were varied from 1.0 ml/g to 5.0 ml/g for liquid and 10 bar to 50 bar for gases. It was found that n-pentane and CO2 could further reduce the optimum operating temperature and amount of methanol for SET process due to promoting higher miscibility between reactants.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Steven, Lim
author_facet	Steven, Lim
author_sort	Steven, Lim
title	In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
title_short	In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
title_full	In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
title_fullStr	In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
title_full_unstemmed	In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel
title_sort	in situ extraction and transesterification of jatropha curcas l. seeds using supercritical fluids for the synthesis of biodiesel
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Kimia
publishDate	2013
url	http://eprints.usm.my/46243/1/Steven%20Lim24.pdf
_version_	1747821635572858880

In Situ Extraction And Transesterification Of Jatropha Curcas L. Seeds Using Supercritical Fluids For The Synthesis Of Biodiesel

Similar Items