The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester

Biodiesel is composed of various types of methyl ester compounds with different concentrations. The role of unsaturation degree was observed through single-molecule droplet combustion from three fatty acid methyl ester compounds. This research was conducted under normal gravity at ambient temperatur...

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Autores principales:	Ibrahim Ahmad Ibadurrohman, Nurkholis Hamidi, Lilis Yuliati
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Unsaturation degree Fatty acid methyl ester Droplet combustion characteristics Allyl groups Energy gap Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/6485a3c74f8745d8a87fb4b22a2cb38e
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spelling	oai:doaj.org-article:6485a3c74f8745d8a87fb4b22a2cb38e2021-11-30T04:13:55ZThe role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester1110-016810.1016/j.aej.2021.07.038https://doaj.org/article/6485a3c74f8745d8a87fb4b22a2cb38e2022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1110016821005081https://doaj.org/toc/1110-0168Biodiesel is composed of various types of methyl ester compounds with different concentrations. The role of unsaturation degree was observed through single-molecule droplet combustion from three fatty acid methyl ester compounds. This research was conducted under normal gravity at ambient temperature and atmospheric pressure. Analysis of droplet combustion characteristics was observed along the heating, evaporation, ignition, and combustion stages. The cis configuration and allyl groups in unsaturated molecules related to different unsaturation degrees affect the droplet combustion process. Allyl and bis-allyl groups play an important role in accelerating hydrogen atom abstraction due to the weaker bond dissociation energy of the CH bond adjacent to the carbon double bond. The lower energy gap in unsaturated molecules is prone to electron excitation. Increasing the unsaturation degree resulted in shorter ignition delay and burning duration but higher droplet temperature, burning rate constant, specific power output, and flame dimensions. Soot particles formed above the flame tip on the unsaturated molecules gave a higher flame dimension. A high concentration of linoleic methyl ester in biodiesel fuel is recommended due to of high power output. However, the soot formation at a higher level of unsaturation degree should be considered.Ibrahim Ahmad IbadurrohmanNurkholis HamidiLilis YuliatiElsevierarticleUnsaturation degreeFatty acid methyl esterDroplet combustion characteristicsAllyl groupsEnergy gapEngineering (General). Civil engineering (General)TA1-2040ENAlexandria Engineering Journal, Vol 61, Iss 3, Pp 2046-2060 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Unsaturation degree Fatty acid methyl ester Droplet combustion characteristics Allyl groups Energy gap Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Unsaturation degree Fatty acid methyl ester Droplet combustion characteristics Allyl groups Energy gap Engineering (General). Civil engineering (General) TA1-2040 Ibrahim Ahmad Ibadurrohman Nurkholis Hamidi Lilis Yuliati The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
description	Biodiesel is composed of various types of methyl ester compounds with different concentrations. The role of unsaturation degree was observed through single-molecule droplet combustion from three fatty acid methyl ester compounds. This research was conducted under normal gravity at ambient temperature and atmospheric pressure. Analysis of droplet combustion characteristics was observed along the heating, evaporation, ignition, and combustion stages. The cis configuration and allyl groups in unsaturated molecules related to different unsaturation degrees affect the droplet combustion process. Allyl and bis-allyl groups play an important role in accelerating hydrogen atom abstraction due to the weaker bond dissociation energy of the CH bond adjacent to the carbon double bond. The lower energy gap in unsaturated molecules is prone to electron excitation. Increasing the unsaturation degree resulted in shorter ignition delay and burning duration but higher droplet temperature, burning rate constant, specific power output, and flame dimensions. Soot particles formed above the flame tip on the unsaturated molecules gave a higher flame dimension. A high concentration of linoleic methyl ester in biodiesel fuel is recommended due to of high power output. However, the soot formation at a higher level of unsaturation degree should be considered.
format	article
author	Ibrahim Ahmad Ibadurrohman Nurkholis Hamidi Lilis Yuliati
author_facet	Ibrahim Ahmad Ibadurrohman Nurkholis Hamidi Lilis Yuliati
author_sort	Ibrahim Ahmad Ibadurrohman
title	The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
title_short	The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
title_full	The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
title_fullStr	The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
title_full_unstemmed	The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
title_sort	role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/6485a3c74f8745d8a87fb4b22a2cb38e
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The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester

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