Ozone removal by diesel particulate matter

Metts, Tricia A.; Batterman, Stuart; Fernandes, Gerald; Kalliokoski, Pentti

doi:10.1016/j.atmosenv.2005.01.027

Cited by 9 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amount/nature of OC associated with soots varies with fuel and conditions of soot formation and can alter the reactivity of soots towards ozone. Metts et al reported that 46% of the total mass of diesel particulate matter is due to organic carbon and that considerably more ozone is removed from the atmosphere by diesel particulate matter when the OC fraction has been removed from the soot, 32 although they do conclude that urban diesel soot concentrations will remove only a small poprtion of ozone from tropospheric air in total. In this work, there is evidence for the reaction of both the OC and EC components of the soots.…”

Section: Part 3: Reactivity Of Oc and Ecmentioning

confidence: 99%

Heterogeneous chemistry of toluene, kerosene and diesel soots

Daly

Horn

2009

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Soot samples as potential mimics of atmospheric aerosols have been produced from the combustion of toluene, kerosene and diesel in order to compare the nature of soot produced from a simpler material, toluene, with soots from the fuels kerosene and diesel. Characterisation of the soots using elemental analysis, infrared spectroscopy, solvent extraction, thermal desorption and electron microscopy techniques before and after reaction with ozone allows assessment of the reactivity of soots from these different fuels. Despite the production of toluene and kerosene soots from identical combustion conditions, strong differences in structure and reactivity are observed in terms of their reaction with ozone. However, toluene soot is a much better mimic of diesel soot. It is proposed that the differing reactivities of the soots is related to the nature of the organic carbon and structure of the elemental carbon which vary with soots from the different fuels.

show abstract

Section: Part 3: Reactivity Of Oc and Ecmentioning

confidence: 99%

Heterogeneous chemistry of toluene, kerosene and diesel soots

Daly

Horn

2009

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Both are frequently found in association to carbonaceous particulate, ,, and PACs (detected in diesel exhaust) have also been supposed to possibly originate on the surface of particulate matter. Laboratory studies on the soot/O 3 interaction − have been carried out. PAH ozonization, in particular, has been investigated in the gas phase, in solution, or under different adsorption conditions. ,− PAHs and PACs adsorbed on fine particles are of concern as regards human health.…”

Section: Introductionmentioning

confidence: 99%

Border Reactivity of Polycyclic Aromatic Hydrocarbons and Soot Platelets Toward Ozone. A Theoretical Study

Giordana¹,

Maranzana²,

Ghigo³

et al. 2010

J. Phys. Chem. A

View full text Add to dashboard Cite

PAH-based models, with an even or odd number of unsaturated carbon atoms and π electrons (even and odd PAHs for short), are selected to investigate, by molecular and periodic methods, their electron distribution and border reactivity toward ozone, and also to represent local features and edge reactivity of even or odd soot platelets. These results will contrast those previously collected for the internal positions of similar even (J. Phys. Chem. A 2005, 109, 10929.) or odd systems (J. Phys. Chem. A 2008, 112, 973.). Topologically different peripheral positions, representative of armchair and zigzag borders, exhibit different reactivity right from the beginning. Ozone attacks start off either to give primary ozonides by concerted addition or, nonconcertedly, to first produce trioxyl intermediates. Then, a variety of pathways are described, whose viability depends on both model and position. They can open the way to the possible formation of epoxide, aldehyde, and phenol groups (all entailing O(2) production) or ether (+CO(2)), lactone (+H(2)CO), and ketone functionalities. To sum up, functionalization, regardless of how achieved, can give a number of groups, most of which actually observed in PAH ozonization experimental studies. This picture can be matched up to the results on internal sites of our preceding papers, for which epoxidation was the only outcome. Most interestingly, formation of a ketone group may turn an even system into an odd one (and conversely) while involving production of HOO(•).

show abstract

“…It is derived partly from the lubricating oil, partly from unburned fuel, and partly from compounds formed during combustion. SOF values are too high at light engine loads when exhaust temperatures are low (Sarvi et al 2011;Tighe et al 2012;Metts et al 2005;Stanmore et al 2001;Sharma et al 2005).…”

Section: Particulate Matter (Pm)mentioning

confidence: 99%

The pollutant emissions from diesel-engine vehicles and exhaust aftertreatment systems

Reşi̇toğlu

Altınışık

Keskïn

2014

Clean Techn Environ Policy

819

353

View full text Add to dashboard Cite

Diesel engines have high efficiency, durability, and reliability together with their low-operating cost. These important features make them the most preferred engines especially for heavy-duty vehicles. The interest in diesel engines has risen substantially day by day. In addition to the widespread use of these engines with many advantages, they play an important role in environmental pollution problems worldwide. Diesel engines are considered as one of the largest contributors to environmental pollution caused by exhaust emissions, and they are responsible for several health problems as well. Many policies have been imposed worldwide in recent years to reduce negative effects of diesel engine emissions on human health and environment. Many researches have been carried out on both diesel exhaust pollutant emissions and aftertreatment emission control technologies. In this paper, the emissions from diesel engines and their control systems are reviewed. The four main pollutant emissions from diesel engines (carbon monoxide-CO, hydrocarbons-HC, particulate matter-PM and nitrogen oxides-NO x ) and control systems for these emissions (diesel oxidation catalyst, diesel particulate filter and selective catalytic reduction) are discussed. Each type of emissions and control systems is comprehensively examined. At the same time, the legal restrictions on exhaust-gas emissions around the world and the effects of exhaust-gas emissions on human health and environment are explained in this study.

show abstract

Ozone removal by diesel particulate matter

Cited by 9 publications

References 27 publications

Heterogeneous chemistry of toluene, kerosene and diesel soots

Heterogeneous chemistry of toluene, kerosene and diesel soots

Border Reactivity of Polycyclic Aromatic Hydrocarbons and Soot Platelets Toward Ozone. A Theoretical Study

The pollutant emissions from diesel-engine vehicles and exhaust aftertreatment systems

Contact Info

Product

Resources

About