Effect of Diesel Engine Operating Conditions on the Particulate Size, Nanostructure and Oxidation Properties when Using Wasting Cooking Oil Biodiesel

Man, Xingjia; Cheung, Chun Shun; Ning, Zhi

doi:10.1016/j.egypro.2015.02.020

Cited by 34 publications

(18 citation statements)

References 12 publications

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“…The vertical distance between two parallel microcrystalline carbon layers is shown in Figure . Man's study showed that the oxidative reactivity of particulates is related to their nanostructure and that the interfacial layer strongly influences the oxidation activity of particulates . The increase in the interfacial layer thickness can increase the contact area of the oxygen reaction between the carbon microcrystalline layer and improve the oxidation activity of particulates.…”

Section: Resultsmentioning

confidence: 99%

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Zhong

Liu

2019

Env Prog and Sustain Energy

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In this article, the particulates formed by the combustion of diesel, 20% and 50% biodiesel blended in diesel (denoted as B20 and B50, respectively), and biodiesel were collected. The micromorphologies of the particulates were observed by scanning electron microscopy. Furthermore, the small‐angle X‐ray scattering technique was used to analyze the gyration radius, size distribution, interfacial characteristics, and fractal characteristics of the particulates. The results show that the size of the particulates formed by combustion of the fuels was concentrated between 10 and 35 nm and obeyed a Gaussian distribution. Moreover, the addition of biodiesel to diesel led to smaller particulate sizes for the biodiesel/diesel blend: the mean radii of the particulates for diesel, B20, B50, and biodiesel were 11.5 nm, 10.8 nm, 10.2 nm, and 9.7 nm, respectively. In addition, an interfacial layer was observed between the particulates, and the average interfacial thickness of the particulates was between 1.54 and 1.89 nm. The mass fractal dimension of the particulates was between 0.2 and 2.5, and the surface fractal dimension of the particulates was between 2.1 and 2.9. The addition of biodiesel to diesel resulted in a more compact particulate structure and the rougher surface. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Section: Resultsmentioning

confidence: 99%

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Zhong

Liu

2019

Env Prog and Sustain Energy

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“…The results showed that biodiesel leads to a reduction in HC, CO, and particulate mass concentration and number concentrations, but an increase in NO x . Man et al [27] studied the effect of diesel operating conditions on the particle size emitted by a diesel engine operating with WCO biodiesel. They found more particles with larger size at lower engine speed; primary particles tend to form at lower engine load.…”

Section: Introductionmentioning

confidence: 99%

Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Chiatti¹,

Chiavola²,

Recco³

2018

Improvement Trends for Internal Combustion Engines

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The employment of biofuels in blends with diesel oil proved to attain a reduced environmental impact without compromising the engine performance. Among biofuels, waste cooking oil offers the advantages of its reduced raw material cost in comparison with fresh vegetable oil cost; it also eliminates the environmental impacts caused by its disposal. Although a great number of researches has been devoted to biodiesel combustion in engines and pollutant emissions, few studies can be found on light duty diesel engine equipped with up-to-date technologies. This work aims at investigating the impact of waste cooking oil percentage in blends with diesel oil on the performance and emission characteristics of an up-to-date light and compact common rail diesel engine whose main application is in microcars and in urban vehicles. A comprehensive experimental activity was performed in the engine complete operative field. The comparison of the results with those obtained with standard ultralow-sulfur diesel highlighted that the engine performance was quite similar for B20 and diesel oil. B40 suffered for the lower caloric value in regard to diesel. A reduction in CO and HC was obtained with biodiesel blends, along with an increase in NO x . Particulate emissions were also reduced for biodiesel blends; the mean size of particles was smaller as regards diesel oil.

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“…Man et al. () studied the effect of engine speed and engine load (air/fuel ratio) on particulate nanostructure and oxidative reactivity when the engine was operated with WCO biodiesel. High‐resolution transmission electron microscope images revealed that larger primary particles were formed at low engine speeds and high engine loads when compared with diesel.…”

Section: Performance Of Biodiesel As a Fuelmentioning

confidence: 99%

Production, engine performance, combustion, emission characteristics and economic feasibility of biodiesel from waste cooking oil: A review

Rekhate

Prajapati

2019

Environmental Quality Mgmt

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The depletion of fossil fuel reserves and increasing demands for diesel are considered to be important triggers for many of the initiatives that have been taken to search for possible sources for the production of biodiesel from materials available within the country. It is possible to produce biodiesel from waste/used cooking oils (WCO) that is comparable in quality to that of fresh vegetable oil. Not only does reuse of WCO, which can otherwise harm human health, reduce the burden on the government of treating oily wastewater, disposing of the waste, and maintaining public sewers, it also significantly lowers the production cost of biodiesel. In the process of frying, oil undergoes many reactions, leading to the formation of a number of undesirable compounds, such as polymers, free fatty acids, and many other chemicals. This poses challenges in the transesterification of WCO. This article covers different techniques in the production of biodiesel from WCO.It also compares combustion, emissions, and engine performance characteristics of biodiesel from WCO as well as factors affecting biodiesel production from WCO and its economic feasibility. K E Y W O R D S

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Effect of Diesel Engine Operating Conditions on the Particulate Size, Nanostructure and Oxidation Properties when Using Wasting Cooking Oil Biodiesel

Cited by 34 publications

References 12 publications

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Production, engine performance, combustion, emission characteristics and economic feasibility of biodiesel from waste cooking oil: A review

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