The role of the unsaturation degree on the droplet combustion characteristics of fatty acid methyl ester
TLDR
In this article, the role of unsaturation degree in single-molecule droplet combustion from three fatty acid methyl ester compounds was observed under normal gravity at ambient temperature and atmospheric pressure.Abstract:
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.read more
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References
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Journal ArticleDOI
Review of biodiesel composition, properties, and specifications
TL;DR: In this paper, the fatty acid (FA) profiles of 12 common biodiesel feedstocks were summarized, and it was shown that several fuel properties, including viscosity, specific gravity, cetane number, iodine value, and low temperature performance metrics are highly correlated with the average unsaturation of the FA profiles.
Journal ArticleDOI
Biofuel combustion chemistry: from ethanol to biodiesel.
Katharina Kohse-Höinghaus,Patrick Oßwald,Terrill A. Cool,Tina Kasper,Nils Hansen,Fei Qi,Charles K. Westbrook,Phillip R. Westmoreland +7 more
TL;DR: Some characteristic aspects of the chemical pathways in the combustion of prototypical representatives of potential biofuels are highlighted, which focus on the decomposition and oxidation mechanisms and the formation of undesired, harmful, or toxic emissions.
Journal ArticleDOI
Predicting cetane number, kinematic viscosity, density and higher heating value of biodiesel from its fatty acid methyl ester composition
Luis Felipe Ramírez-Verduzco,Javier Esteban Rodríguez-Rodríguez,Alicia del Rayo Jaramillo-Jacob +2 more
TL;DR: In this article, the authors presented the characterization of two biodiesel samples made from beef tallow and soybean oil through their fatty acid methyl esters (FAMEs) profile.
Journal ArticleDOI
An overview of biodiesel oxidation stability
James Pullen,Khizer Saeed +1 more
TL;DR: An overview of researches into biodiesel oxidation stability is presented in this article in an attempt to convey the significance of this important property of biodiesel fuel and its importance in standardization and fuel quality assurance are crucial factors for biodiesel market acceptance.
Journal ArticleDOI
Effect of the Degree of Unsaturation of Biodiesel Fuels on Engine Performance, Combustion Characteristics, and Emissions
TL;DR: In this paper, the effect of the biodiesel chemi cation on the physicochemical properties of different feedstocks has been investigated for different feedstock types and feedstock feedstocks.