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Characterization of the composition ...

Thiruvengadam Padmavathy, Arvind.

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Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines./
Author:	Thiruvengadam Padmavathy, Arvind.
Description:	200 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-11(E), Section: B.
Contained By:	Dissertation Abstracts International74-11B(E).
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3571627
ISBN:	9781303253966

Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines.
Thiruvengadam Padmavathy, Arvind.

Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines. - 200 p.

Source: Dissertation Abstracts International, Volume: 74-11(E), Section: B.

Thesis (Ph.D.)--West Virginia University, 2013.

Heavy-duty natural gas engines compliant with the 2010 EPA emissions standards have a clear advantage over diesel engines in meeting regulations with minimal after-treatment configuration. Heavy-duty natural gas engines are largely promoted as a cleaner burning engine with respect to low PM mass emissions. However, lack of sufficient data and literature on the exhaust emissions from advanced natural gas engines and the potential adverse health effects has raised concern amongst regulatory agencies. Also, the ammonia emissions from three-way catalyst equipped heavy-duty natural gas engines could be a major contributor to the formation of secondary PM in the atmosphere.

ISBN: 9781303253966Subjects--Topical Terms:

783786
Engineering, Mechanical.

Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines.
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020 $a 9781303253966
035 $a (MiAaPQ)AAI3571627
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100 1 $a Thiruvengadam Padmavathy, Arvind. $3 2104662
245 1 0 $a Characterization of the composition and toxicity of particulate matter emissions from advanced heavy-duty natural gas engines.
300 $a 200 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-11(E), Section: B.
500 $a Adviser: Mridul Gautam.
502 $a Thesis (Ph.D.)--West Virginia University, 2013.
520 $a Heavy-duty natural gas engines compliant with the 2010 EPA emissions standards have a clear advantage over diesel engines in meeting regulations with minimal after-treatment configuration. Heavy-duty natural gas engines are largely promoted as a cleaner burning engine with respect to low PM mass emissions. However, lack of sufficient data and literature on the exhaust emissions from advanced natural gas engines and the potential adverse health effects has raised concern amongst regulatory agencies. Also, the ammonia emissions from three-way catalyst equipped heavy-duty natural gas engines could be a major contributor to the formation of secondary PM in the atmosphere.
520 $a This CARB funded study focuses primarily on characterizing the toxicity of the volatile fraction of PM from advanced heavy-duty natural gas engines. The objective of the study also includes characterizing the unregulated species of the exhaust together with number concentration and size distribution of ultrafine nanoparticle emissions. CNG fueled transit buses were tested on WVU's heavy-duty chassis dynamometer in Stockton, CA. A wide array of sampling procedures was included to characterize the complete chemical composition of the exhaust. The toxicity analysis included three different assays a) DHBA b) DTT and c) alveolar macrophage ROS assay.
520 $a Results of the gas phase chemical speciation results reported all carbonyl, PAH and VOC emissions close to levels found in background or below the detection limits of the analytical method. Results of elemental analysis reported elements such as calcium, phosphorus, potassium, zinc, sulfur and magnesium are some of the metals that were found in significant concentration in the PM samples. The findings of the study directly relate lubrication oil as the single most dominant source to non-volatile fraction PM emissions in the tailpipe. Both DHBA and DTT assay correlated highly with mass of elements and metals such as zinc, iron and cobalt. The DTT assay resulted in high correlation with mass of copper, zinc, phosphorus and PAH with molecular weight less than 200. The findings of this study also reported the possible formation of non-volatile nucleation mode particles of 10 nm size range.
590 $a School code: 0256.
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Automotive. $3 1018477
650 4 $a Environmental Sciences. $3 676987
650 4 $a Health Sciences, Toxicology. $3 1017752
690 $a 0548
690 $a 0540
690 $a 0768
690 $a 0383
710 2 $a West Virginia University. $b Mechanical and Aerospace. $3 2104663
773 0 $t Dissertation Abstracts International $g 74-11B(E).
790 $a 0256
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3571627