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The feasibility study of desulfuriza...

Mei, Hai.

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The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD).

Record Type:	Electronic resources : Monograph/item
Title/Author:	The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD)./
Author:	Mei, Hai.
Description:	204 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4549.
Contained By:	Dissertation Abstracts International64-09B.
Subject:	Engineering, Environmental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3103946

The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD).
Mei, Hai.

The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD). - 204 p.

Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4549.

Thesis (Ph.D.)--University of Southern California, 2003.

Sulfur in diesel fuel leads directly to emission of SO 2 and sulfate particulate matter (PM) which endanger public health and welfare. Furthermore, the sulfur compounds in the exhaust gases of diesel engines can significantly impair the emission control technology designed to meet NOx and PM emission standards. In order to effectively control air pollution due to diesel fuel combustion, U.S. EPA has released a new regulation requiring the use of ultra-low-sulfur diesel (ULSD). This regulation requires that the sulfur content of diesel fuel used in highway vehicles be limited to 15 ppm, effective as of June 1, 2006. The current standard is 500 ppm.Subjects--Topical Terms:

783782
Engineering, Environmental.

The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD).
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100 1 $a Mei, Hai. $3 1952758
245 1 4 $a The feasibility study of desulfurization of diesel fuels by ultrasound-assisted oxidative desulfurization (UAOD).
300 $a 204 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4549.
500 $a Adviser: Teh Fu Yen.
502 $a Thesis (Ph.D.)--University of Southern California, 2003.
520 $a Sulfur in diesel fuel leads directly to emission of SO 2 and sulfate particulate matter (PM) which endanger public health and welfare. Furthermore, the sulfur compounds in the exhaust gases of diesel engines can significantly impair the emission control technology designed to meet NOx and PM emission standards. In order to effectively control air pollution due to diesel fuel combustion, U.S. EPA has released a new regulation requiring the use of ultra-low-sulfur diesel (ULSD). This regulation requires that the sulfur content of diesel fuel used in highway vehicles be limited to 15 ppm, effective as of June 1, 2006. The current standard is 500 ppm.
520 $a Due to the requirement of stringent rules for ULSD, it is necessary to develop alternative methods for desulfurization of fossil fuel derived oil. In this dissertation, an innovative desulfurization scheme---ultrasound assisted oxidative desulfurization (UAOD) was developed. UAOD successfully combines sonication with phase transfer catalysis and transition metal catalyzed oxidation resulting in remarkable sulfur removal efficiency under mild conditions.
520 $a It has been demonstrated that using appropriate oxidants and catalysts with the assistance of ultrasound irradiation, model compounds such as dibenzothiophene can be quantitatively oxidized in minutes with hydrogen peroxide consumption close to stoichiometric quantities. For diesel fuels containing various levels of sulfur content, through the use of catalytic oxidation and sonication followed by solvent extraction, removal efficiency of sulfur-bearing compounds can reach or exceed 99% in a short contact time at low temperature and atmospheric pressure.
520 $a GC-PFPD, GC-MS and GC-Simulated Distillation (GC-SIMDIS) methods have been successfully employed to evaluate the efficiency and the selectivity of UAOD process on diesels. It is demonstrated that UAOD process has no deleterious effects on distillation profile and other characteristics of diesel fuels.
520 $a The results of this dissertation show that ultrasound-assisted oxidative desulfurization (UAOD) process is technically feasible to effectively remove sulfur from diesel fuels. With appropriate process design and use of chemicals, UAOD process would provide a solution to produce ultra-low sulfur diesel that meets future environmental standards.
590 $a School code: 0208.
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Environmental Sciences. $3 676987
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690 $a 0542
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710 2 0 $a University of Southern California. $3 700129
773 0 $t Dissertation Abstracts International $g 64-09B.
790 1 0 $a Yen, Teh Fu, $e advisor
790 $a 0208
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3103946