Evaluation of the characteristics of non-oxidative biodiesels: A FAME composition, thermogravimetric and IR analysis

Shancita, I; Masjuki, HH; Kalam, MA; Reham, SS; Ruhul, AM; Monirul, IM

Evaluation of the characteristics of non-oxidative biodiesels: A FAME composition, thermogravimetric and IR analysis

Shancita, I Masjuki, HH Kalam, MA Reham, SS Ruhul, AM Monirul, IM

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: RSC Advances, 2016, 6, (10), pp. 8198-8210
Issue Date:: 2016-01-01

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Field	Value	Language
dc.contributor.author	Shancita, I
dc.contributor.author	Masjuki, HH
dc.contributor.author	Kalam, MA
dc.contributor.author	Reham, SS
dc.contributor.author	Ruhul, AM
dc.contributor.author	Monirul, IM
dc.date.accessioned	2022-08-14T07:54:14Z
dc.date.available	2022-08-14T07:54:14Z
dc.date.issued	2016-01-01
dc.identifier.citation	RSC Advances, 2016, 6, (10), pp. 8198-8210
dc.identifier.issn	2046-2069
dc.identifier.issn	2046-2069
dc.identifier.uri	http://hdl.handle.net/10453/160145
dc.description.abstract	This experiment evaluates the effects of non-oxidative biodiesel (low oxygen content biodiesels) characteristics and their engine performances. Biodiesels produced from different feedstocks typically contains 10% to 15% oxygen by weight, which enhances the combustion quality and reduces the emissions of hydrocarbons (HCs) and carbon monoxide (CO). However, it produces a higher amount of nitrogen oxides (NOx) due to an increasing number of combustion products, resulting in a higher cylinder temperature. In addition, lean air-fuel mixtures can contribute to higher NOx emissions because biodiesel is more oxygenated than diesel. In this study, biodiesels produced from different feedstocks by a transesterification process were used to reduce the oxygen content by dipping an iron bar in the biodiesels, which absorbs oxygen and gets oxidized. Then, the oil characteristics, such as the percentage of saturated and unsaturated fatty acids, thermal degradation, stability and existing functional groups, were analyzed using fatty acid methyl ester (FAME) composition analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and Fourier transform infrared (FT-IR) spectroscopy analysis of neat biodiesel and non-oxidative biodiesel. Herein, Pongamia and Moringa biodiesels, containing normal and reduced weight percentages of oxygen, were evaluated to improve the quality and stability of biodiesels used in the diesel engine, which will also reduce the NOx emissions. Non-oxidative biodiesels had some positive effect on their properties, which can further reduce the NOx emissions. Herein, non-oxidative Pongamia and Moringa had quite similar characteristics and the former was observed to perform better in the reduction of NOx and other emissions as well.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	RSC Advances
dc.relation.isbasedon	10.1039/c5ra23963j
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences
dc.title	Evaluation of the characteristics of non-oxidative biodiesels: A FAME composition, thermogravimetric and IR analysis
dc.type	Journal Article
utslib.citation.volume	6
utslib.for	03 Chemical Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-08-14T07:54:13Z
pubs.issue	10
pubs.publication-status	Published
pubs.volume	6
utslib.citation.issue	10

Abstract:

This experiment evaluates the effects of non-oxidative biodiesel (low oxygen content biodiesels) characteristics and their engine performances. Biodiesels produced from different feedstocks typically contains 10% to 15% oxygen by weight, which enhances the combustion quality and reduces the emissions of hydrocarbons (HCs) and carbon monoxide (CO). However, it produces a higher amount of nitrogen oxides (NOx) due to an increasing number of combustion products, resulting in a higher cylinder temperature. In addition, lean air-fuel mixtures can contribute to higher NOx emissions because biodiesel is more oxygenated than diesel. In this study, biodiesels produced from different feedstocks by a transesterification process were used to reduce the oxygen content by dipping an iron bar in the biodiesels, which absorbs oxygen and gets oxidized. Then, the oil characteristics, such as the percentage of saturated and unsaturated fatty acids, thermal degradation, stability and existing functional groups, were analyzed using fatty acid methyl ester (FAME) composition analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and Fourier transform infrared (FT-IR) spectroscopy analysis of neat biodiesel and non-oxidative biodiesel. Herein, Pongamia and Moringa biodiesels, containing normal and reduced weight percentages of oxygen, were evaluated to improve the quality and stability of biodiesels used in the diesel engine, which will also reduce the NOx emissions. Non-oxidative biodiesels had some positive effect on their properties, which can further reduce the NOx emissions. Herein, non-oxidative Pongamia and Moringa had quite similar characteristics and the former was observed to perform better in the reduction of NOx and other emissions as well.

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http://hdl.handle.net/10453/160145