Impact of Non-Thermal Plasma on Particulate Emissions in Application in a Diesel Engine Exhaust Duct

Langhorst, Thorsten; Toedter, Olaf; Koch, Thomas; Gonner, Patrick

doi:10.4271/2017-01-5100

Cited by 1 publication

(1 citation statement)

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“…Their study found that the mass removal efficiency of the PM was as high as 43.9% and the quantity removal efficiency of the PM reached more than 70%. Thorsten et al 29 conducted a PM removal test by directly introducing NTP into the exhaust passage of a running diesel engine and monitored the changes in particle number, particle size distribution, and nitrogen oxide. The results showed that the PM oxidation amount was related to the load and the maximum amount of PM removed was 10%.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nonthermal Plasma on Microstructure and Oxidation Characteristics of Particulate Matter

Cai

Shi

et al. 2020

Environ. Sci. Technol.

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To investigate the effect of nonthermal plasma (NTP) on the microstructure and oxidation characteristics of particulate matter (PM) from diesel engines at different oxidation stages, a self-designed NTP reactor was used to conduct a timevarying oxidation test on PM samples. The oxidized PM samples were analyzed via thermogravimetric analysis and Raman spectroscopy. The results indicated that the effect of NTP could allow the elemental carbon (EC) to more easily start ignition. The oxidation activity of the EC decreased when the action time of the NTP was less than 5 min. Conversely, when the NTP action time was more than 5 min, the EC oxidation activity gradually increased. When the NTP was active for more than 10 min, it rapidly reacted with the EC, and the oxidation priority of the volatile fraction was higher than that of the EC. During the oxidation process, there are many forms of carbon structures in the particles and they have a mutual transmission relationship. The variation trend of the graphitization degree was consistent with that of the thermogravimetric results, indicating that the degree of graphitization directly affected the PM oxidation activity.

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Section: Introductionmentioning

confidence: 99%