The Effect of Biodiesel and Its Blends with an Oxygenated Additive on the Combustion, Performance, and Emissions from a Diesel Engine

Sivalakshmi, S.; Balusamy, T.

doi:10.1080/15567036.2011.582616

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…Because neem oil has a good amount of such FAs in the form of oleic acid, it is expected that the quality of biodiesel or fatty acid methyl esters (FAME) obtainable from it would have desired fuel properties in terms of cetane number and viscosity. , Also, a good oxidative stability is expected from it by virtue of the relatively low amount of polyunsaturated fatty acids (linoleic and linolenic) in it as compared to rapeseed and soybean oils . These differences in FA contents in neem oil and widely studied rapeseed and soybean oils have motivated several combustion studies on biodiesel from neem oil. ,− For example, some recent experimental studies in diesel engines fueled with neem oil-derived biodiesel/diesel blends report an enhancement in brake thermal efficiency and a reduction in soot, CO, and unburnt hydrocarbon emissions, as compared to pure diesel, though NO x emission increases. ,,, However, no studies on the characteristics of soot produced from neem-derived biodiesel could be found in the literature. Moreover, while there is sufficient evidence in the literature that blending biodiesel with diesel has a substantial effect on reducing soot emissions from diesel engines and on the reduction of primary particle size in soots, their effects on the soot characteristics are still less understood.…”

Section: Introductionmentioning

confidence: 99%

Effects of Neem Oil-Derived Biodiesel Addition to Diesel on the Reactivity and Characteristics of Combustion-Generated Soot

et al. 2017

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This study reports the impact of a biodiesel, produced from inedible neem oil through a transesterification process, on the formation and physicochemical properties of soot from diesel/biodiesel blends. A smoke point test for the diesel/biodiesel blends is presented that reveals a nonlinear reduction in the sooting propensity of diesel with increasing proportion of neem-biodiesel in the blends. Soot particles from the diffusion flames of pure diesel and a diesel/biodiesel blend are analyzed through thermogravimetric analysis, high-resolution transmission electron microscopy, electron energy loss spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy techniques. Soot from the blended fuel was found to be more reactive in air than that from pure diesel. To understand and explain the reactivity differences, the nanostructural changes (the sizes of aromatics and the primary particles comprising soot, and the thickness of the nanocrystallites) along with the variation in the chemical composition (the concentration of oxygenated functional groups, σ and π bonding, and the aliphatic and aromatic content) in soot arising from the addition of biodiesel to diesel are determined. The presence of neem-biodiesel in the fuel was found to enhance the concentrations of aliphatic and oxygenated groups on soot, possibly due to the high amounts of saturated fatty acid methyl esters and the presence of fuel-bound oxygen in it.

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Section: Introductionmentioning

confidence: 99%

Effects of Neem Oil-Derived Biodiesel Addition to Diesel on the Reactivity and Characteristics of Combustion-Generated Soot

et al. 2017

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“…Just as with brakespecific fuel consumption and power, blends of biodiesels can also alter the NOx emissions. CO is one of the consequences of incomplete fuel combustion ( [9] and [22]). Concentration of oxygen during combustion enhances the oxidation rate of CO and leads to less CO formation.…”

mentioning

confidence: 99%

Melon oil methyl ester: an environmentally friendly fuel

Fasogbon

2015

J. nat. resour. dev.

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Demand for energy is growing across the globe due to the direct relationship between the well-being and prosperity of people and energy usage. However, meeting this growing energy demand in a safe and environmentally friendly manner is a key challenge. To this end, methyl esters (biodiesels) have been and are being widely investigated as alternatives to fossil fuels in compression ignition engines. In this study, melon (Colocynthis Citrullus Lanatus) oil was used to synthesize biodiesel (methyl ester) using the transesterification method in the presence of a sodium hydroxide promoter. The emissions profile of the biodiesel was investigated by setting up a single-cylinder four-stroke air-cooled CI engine connected to a TD115-hydraulic dynamometer and an Eclipse Flue Gas Analyzer (FGA) with model number EGA4 flue gas analyzer. The engine was run at engine speeds of 675, 1200 and 1900rpm for biodiesel/diesel blends at 21°C on a volume basis of 0/100(B0), 10/90(B10), 20/80(B20), 30/70(B30), 40/60(B40) and 50/50(B50). The test showed a downward trend in the emissions profile of the biodiesel, with remarkable reductions of about 55% in the dangerouscarbon monoxide exhaust gas pollutant and 33.3% in the unfriendly SOX from 100% diesel to B30biodiesel concentration. Increasing the speed from 675 to 1200 and then to 1900 rpm also afforded further reductions in CO and SOX exhaust emissions. NOX however increased marginally by 2.1% from the same 100% diesel to the B30-biodiesel composition. Based on the remarkable reduction in CO and SOX and the marginal increase in NOX as the concentration of the biodiesel increased in the blends, the study concludes that melon oil methyl ester is an environmentally friendly fuel.

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“…From which it is to be noted that the NO X emissions are lower for ES biodiesel blends B10, B20 and B30 when compared to base diesel. This NO X emission reduction can be attributed to lower combustion temperature caused by the blends lower heat release rate and which may be due to the poor blend and air mixing [45]. NO X emissions reduced on an average by 12.70%, 2.31% and 6.18% for blends B10, B20 and B30 respectively compared to diesel.…”

Section: Nitrogen Oxide Emissionmentioning

confidence: 96%

Production of Biodiesel from Eruca Sativa (Taramira) and Its Utilization in DI Diesel Engine for Examining the Exhaust Emissions

Hussain*,

Biradar

2020

IJRTE

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Increasing demand of the carbon fuels in daily life and the global environmental degradation has led to the biodiesel production from non-edible oils because they has high potential as ecological, clean, facile and renewable fuel. In present study, oil is extracted from dried Eruca sativa seeds using mechanical expellers, the oil yield obtained is calculated. By alkaline transesterification, the obtained oil is converted into biodiesel. The physicochemical properties of Eruca sativa biodiesel are tested following ASTM test methods, all the properties satisfies and meet the ASTM D-6751 biodiesel standard specifications. The gas chromatography technique is used for the analysis of fatty acid composition of the biodiesel, which shows that the erucic acid has higher percentage composition. Emission characteristics (i.e. carbon monoxide, carbon dioxide, hydro carbon, nitrogen oxide and smoke) of diesel engine are analyzed for the biodiesel and its blends (i.e. B10, B20, B30, B40 and B100) and are compared with the petroleum diesel. From the emission results obtained it is observed that, the CO and CO2 emissions are lower for B10 and B20 blends whereas the HC emissions are lesser than diesel for all the blends. For B10, B20 and B30 blends the NOX emission and smoke opacity has been reduced when compared to diesel.

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The Effect of Biodiesel and Its Blends with an Oxygenated Additive on the Combustion, Performance, and Emissions from a Diesel Engine

Cited by 8 publications

References 6 publications

Effects of Neem Oil-Derived Biodiesel Addition to Diesel on the Reactivity and Characteristics of Combustion-Generated Soot

Effects of Neem Oil-Derived Biodiesel Addition to Diesel on the Reactivity and Characteristics of Combustion-Generated Soot

Melon oil methyl ester: an environmentally friendly fuel

Production of Biodiesel from Eruca Sativa (Taramira) and Its Utilization in DI Diesel Engine for Examining the Exhaust Emissions

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