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

Ibadurrohman, Ibrahim Ahmad; Hamidi, Nurkholis; Yuliati, Lilis

doi:10.1016/j.aej.2021.07.038

Cited by 17 publications

(5 citation statements)

References 41 publications

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“…Oleic acid‐containing fuel droplets have a shorter ignition delay period than gasoline. This is because the monounsaturated oleic acid molecules′ ally group marginally shortens the ignition delay [64]. Both fuels exhibited a typical dense sooty gasoline flame envelope.…”

Section: Resultsmentioning

confidence: 97%

Combustion and secondary atomization behavior of nanofuel droplets laden with hematite, magnetite and lanthanum orthoferrites nanoparticles**

Küçükosman,

Alper Yontar,

Gökhan Ünlü

et al. 2023

Propellants Explo Pyrotec

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Current research concerns the droplet combustion behavior of gasoline‐based nanofuel droplets containing hematite (Fe2O3), magnetite (Fe3O4) and lanthanum orthoferrites (LaFeO3, La0.5Fe1.5O3 and La0.75Fe1.25O3) perovskite type nanoparticles (NPs) at 2.5 % wt. particle loadings. The results showed that the size distribution of hematite and magnetite NPs is on the 90–100 nm scale, while the lanthanum orthoferrites NPs have a particle size distribution of 25–40 nm. The particles with the largest surface area (78,5098 m2/g) and enhanced oxygen adsorbing ability were La0.5Fe1.5O3 NPs. Droplet combustion experiments were recorded with a high speed camera and a 7.5–14 μm spectral area thermal camera. Fe3O4 and LaFeO3 NPs high agglomerate tendency allowed only a single microexplosion event in nanofuel droplets towards the end of the experiment. Only the G/La0.5Fe1.5O3 fuel droplets trended to obey the D2‐law. Nanofuel droplets containing La0.5Fe1.5O3 NPs exhibited the highest maximum flame temperature of 264 °C. The catalytic activity of lanthanum orthoferrite perovskite‐type NPs during combustion was improved due to the decrease in the La ratio in the A‐site and the increase in the Fe ratio in the B‐site.

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Section: Resultsmentioning

confidence: 97%

Combustion and secondary atomization behavior of nanofuel droplets laden with hematite, magnetite and lanthanum orthoferrites nanoparticles**

Küçükosman,

Alper Yontar,

Gökhan Ünlü

et al. 2023

Propellants Explo Pyrotec

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“…Before considering the use of alcohol as an additive in biodiesel, it is essential to comprehend the properties of vegetable oil, the primary ingredient in biodiesel, since alcohol can have distinct effects on each component of vegetable oil. The impact of ethanol, an alcohol, on saturated FAME is distinct from its effect on unsaturated FAME [12].…”

Section: Introductionmentioning

confidence: 96%

“…The high density of biodiesel can affect the atomization process, evaporation, and combustion process [16]. Studies have shown that the geometric structure, boiling point, total number of carbon atoms and double bonds in FAs significantly affect the combustion characteristics of biodiesel or vegetable oils [12,17,18]. Highly saturated FAs generally have higher droplet combustion temperature, flame dimension, constant burning rate, and specific power output, but lower ignition delay and burning duration.…”

Section: Introductionmentioning

confidence: 99%

“…Highly saturated FAs generally have higher droplet combustion temperature, flame dimension, constant burning rate, and specific power output, but lower ignition delay and burning duration. Unsaturated FAs tend to form soot particles above the flame and lead to a larger flame dimension [12].…”

Section: Introductionmentioning

confidence: 99%

“…Diesel engines use a diffusive combustion process for droplets sprayed through the nozzle. To better understand this combustion process, researchers have conducted numerous studies on single droplet combustion, including [12,13,21]. However, previous studies did not typically investigate the impact of alcohol additives on the combustion of individual compounds that make up biodiesel.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Alcohol Compounds on Droplet Combustion Characteristics of Unsaturated Fatty Acid of Linoleic Acid

Hamidi

Ibadurrohman²,

Yuliati³

et al. 2023

Trends Sci

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Alcohol compounds have become a popular choice as additives for improving the performance of biodiesel. However, given the complexity of biodiesel, which is composed of various components of vegetable oil, it requires intensive research to fully understand its behavior. This study aims to investigate the impact of alcohol compounds on the droplet combustion characteristics of linoleic acid, an unsaturated fatty acid. Four alcohol compounds, namely methanol, ethanol, propanol, and butanol, were utilized to evaluate their effects on the combustion properties of the fuel mixtures. The droplet combustion characteristics were observed under normal atmospheric pressure and temperature conditions, with the fuel mixture consisting of 80 % linoleic acid and 20 % alcohol compounds. Our findings indicate that the addition of alcohol compounds to linoleic acid significantly reduced the ignition delay time, although the droplet lifetime was slightly increased. Moreover, it was observed that alcohols with shorter carbon chains had a greater impact on reducing the ignition delay time. Additionally, the results demonstrated that the alcohol compounds could accelerate the rate of increasing combustion temperature, reduce soot formation, and shorten the duration of soot formation. Furthermore, it was found that alcohol with a short carbon chain had a more pronounced effect on the overall combustion characteristics of linoleic acid. Overall, our study sheds light on the effects of alcohol compounds on the droplet combustion characteristics of linoleic acid, providing valuable insights for the optimization of biodiesel performance. HIGHLIGHTS Alcohol has a significant impact on the properties of unsaturated fatty acids, specifically on factors such as ignition delay time, droplet lifetime, temperature, flame dimension, and soot production The addition of alcohol as an additive, results in a reduction in soot generation and a shorter duration of soot formation The length of the carbon chain in the alcohol additive plays a crucial role in the combustion properties of linoleic acid. Alcohols with shorter carbon chains have a greater impact on the overall combustion properties GRAPHICAL ABSTRACT

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Improvement of waste frying oil/cottonseed oil-based biodiesel properties by adjusting unsaturation and its effect on engine emission characteristics

Chang,

Yang,

Xing

et al. 2024

Biochemical Engineering Journal

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

Cited by 17 publications

References 41 publications

Combustion and secondary atomization behavior of nanofuel droplets laden with hematite, magnetite and lanthanum orthoferrites nanoparticles**

Combustion and secondary atomization behavior of nanofuel droplets laden with hematite, magnetite and lanthanum orthoferrites nanoparticles**

The Effect of Alcohol Compounds on Droplet Combustion Characteristics of Unsaturated Fatty Acid of Linoleic Acid

Improvement of waste frying oil/cottonseed oil-based biodiesel properties by adjusting unsaturation and its effect on engine emission characteristics

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