Variation of diesel soot characteristics by different types and blends of biodiesel in a laboratory combustion chamber

Omidvarborna, Hamid; Kumar, Ashok; Kim, Dong-Shik

doi:10.1016/j.scitotenv.2015.11.076

Cited by 54 publications

(21 citation statements)

References 34 publications

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“…The morphology of diesel PM obtained using TEM device is shown in Fig. 3 that it presented the branch-like structures and the particles were seriously stacked, the same phenomenon was observed in references [10,29]. Morphology of diesel PM sampled at different tailpipe positions was similar that soot particles were spherical-like in shape, and aggregated to form the accumulation structures.…”

Section: Resultssupporting

confidence: 67%

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Gao

Tian

et al. 2018

Fuel

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Section: Resultssupporting

confidence: 67%

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Gao

Tian

et al. 2018

Fuel

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“…Renewable diesel fuels produce less particulate matter, carbon monoxide and total hydrocarbons due to reduced aromatics content, higher cetane number (HVO), or oxygen content (biodiesel); the same property, however, could lead to higher emissions of nitrogen oxides (NO x ) [3,4,5,6,7,8]. A disadvantage specific for biodiesel is its lower energy density, leading to a higher fuel consumption and a decrease in torque and power at full load conditions [9].…”

Section: Introductionmentioning

confidence: 99%

“…HVO, however, has no or minor negative influence on fuel consumption and engine power [3,10]. Particle number size distributions were mostly shifting toward smaller sizes with an increased portion of biodiesel in the fuel [4,11]. All presented emission patterns for biodiesel strongly depend on operating regime and engine type, therefore there are also opposite findings, e.g., an increase in particulate mass during idling on biodiesel [12] or opposite results in particle number concentrations in exhaust between two engines under the same conditions on the same biodiesel/diesel mixtures [13].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Toxic Responses of Organic Extracts from Diesel and Selected Alternative Fuels Engine Emissions in Human Lung BEAS-2B Cells

Líbalová

Rössner

Vrbová

et al. 2016

IJMS

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This study used toxicogenomics to identify the complex biological response of human lung BEAS-2B cells treated with organic components of particulate matter in the exhaust of a diesel engine. First, we characterized particles from standard diesel (B0), biodiesel (methylesters of rapeseed oil) in its neat form (B100) and 30% by volume blend with diesel fuel (B30), and neat hydrotreated vegetable oil (NEXBTL100). The concentration of polycyclic aromatic hydrocarbons (PAHs) and their derivatives in organic extracts was the lowest for NEXBTL100 and higher for biodiesel. We further analyzed global gene expression changes in BEAS-2B cells following 4 h and 24 h treatment with extracts. The concentrations of 50 µg extract/mL induced a similar molecular response. The common processes induced after 4 h treatment included antioxidant defense, metabolism of xenobiotics and lipids, suppression of pro-apoptotic stimuli, or induction of plasminogen activating cascade; 24 h treatment affected fewer processes, particularly those involved in detoxification of xenobiotics, including PAHs. The majority of distinctively deregulated genes detected after both 4 h and 24 h treatment were induced by NEXBTL100; the deregulated genes included, e.g., those involved in antioxidant defense and cell cycle regulation and proliferation. B100 extract, with the highest PAH concentrations, additionally affected several cell cycle regulatory genes and p38 signaling.

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“…Biodiesel PM research articles have indicated participation of various metal elements in PM formation . Effects of metal elements on PM formation mechanisms from soot nucleation to surface growth and agglomeration of soot particles should be better understood through both experimental and modeling studies.…”

Section: Conclusion and Suggestionsmentioning

confidence: 99%

“…As stated above, the type of feedstock for biodiesel production is very rapidly diversified for economic and environmental reasons . It has been reported that the amount and composition of biodiesel emissions are controlled by the type of feedstock and blending ratio with regular diesel . Although the biodiesel resources are becoming diverse as shown in Figures and , there is very little information available on the relationship between the feedstock properties and emission characteristics.…”

Section: Introductionmentioning

confidence: 99%

Trend of biodiesel feedstock and its impact on biodiesel emission characteristics

Kim

Hanifzadeh

Kumar

2017

Env Prog and Sustain Energy

Self Cite

100

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Feedstock for biodiesel production has changed over time and it varies depending on regions. Reports and journal articles on biodiesel feedstock resources over the last decade from 2006 to 2016 were reviewed in this article. The regional trends still maintain as the USA and the EU still predominantly use soybean oil and rapeseed oil, respectively, and palm oil is the major source of biodiesel in Asia. It is expected that the food‐crop based biodiesel will continue to be dominant for the next decade. However, it was found that uses of animal fats and used cooking oil are increasing both in the USA and the EU. Because of the increasing diversity in feedstock inputs to biodiesel, it is necessary to better understand the effects of feedstock characteristics on engine performance and emissions. In this review, we limit the reports on biodiesel emissions to those who used 100% biodiesel combusted in a one‐cylinder, four‐stroke, direct injection engine set up in a laboratory. All the emission results were obtained from the same or similar engine conditions to fairly compare them. CO, CO2, NOx, and PM emissions are compared between the biodiesels derived from soybean oil, rapeseed oil, palm oil, jatropha oil, used cooking oil, animal fats, and algal oil. It was found that more emission studies are needed for algal biodiesel. More in‐depth studies are necessary for PM characteristics including the compositions of trace metals, elemental and organic carbon. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 7–19, 2018

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Variation of diesel soot characteristics by different types and blends of biodiesel in a laboratory combustion chamber

Cited by 54 publications

References 34 publications

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Physicochemical property changes during oxidation process for diesel PM sampled at different tailpipe positions

Comparative Analysis of Toxic Responses of Organic Extracts from Diesel and Selected Alternative Fuels Engine Emissions in Human Lung BEAS-2B Cells

Trend of biodiesel feedstock and its impact on biodiesel emission characteristics

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