Oxidation of elemental mercury using atmospheric pressure non-thermal plasma

被引：50

作者：

Byun, Youngchul ^{[2
]}

Ko, Kyung Bo ^{[2
]}

Cho, Moohyun ^{[2
]}

Namkung, Won ^{[2
]}

Shin, Dong Nam ^{[1
]}

Lee, Jin Wook ^{[1
]}

Koh, Dong Jun ^{[1
]}

Kim, Kyoung Tae ^{[1
]}

机构：

[1] Res Inst Ind Sci & Technol, Environm Res Dept, Pohang 790600, Kyoungbuk, South Korea

[2] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Pohang 790784, Kyoungbuk, South Korea

来源：

CHEMOSPHERE | 2008年 / 72卷 / 04期

关键词：

elemental mercury; dielectric barrier discharge; ozone; mercury oxidation;

D O I：

10.1016/j.chemosphere.2008.02.021

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The oxidation of gas phase elemental mercury (He) by atmospheric pressure non-thermal plasma has been investigated at room temperature, employing both dielectric barrier discharge (DBD) of the gas mixture of Hg-0 and injection of ozone (03) into the gas mixture of He. Results have shown that the oxidative efficiencies of He by DBD and the injection Of O-3 are 59%, and 93%, respectively, with energy consumption of 23.7 J L-1. This combined approach has indicated that 03 plays a decisive role in the oxidation of gas phase He. Also the oxidation of He by injecting 03 into the gas mixture of He proceeds with better efficiency than DBD of the gas mixture of He. These results have been explained by the incorporation of the competitive reaction pathways between the formation of Hg-0 by O-3 and the decomposition of Hg-0 back to He in the plasma environment. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：652 / 658

页数：7

共 32 条

[1] Mechanisms of mercury removal by O3 and OH in the atmosphere [J].

Calvert, JG ;

Lindberg, SE .

ATMOSPHERIC ENVIRONMENT, 2005, 39 (18) :3355-3367

[2]

Carpi A, 1997, WATER AIR SOIL POLL, V98, P241, DOI 10.1007/BF02047037

[3]

CHANDLER J, 1999, P 7 ANN NAWTEC C MAY

[4] Mercury oxidization in dielectric barrier discharge plasma system [J].

Chen, Zongyuan ;

Mannava, Deenal P. ;

Mathur, V. K. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (17) :6050-6055

[5] Fixed-bed studies of the interactions between mercury and coal combustion fly ash [J].

Dunham, GE ;

DeWall, RA ;

Senior, CL .

FUEL PROCESSING TECHNOLOGY, 2003, 82 (2-3) :197-213

[6] The case for atmospheric mercury contamination in remote areas [J].

Fitzgerald, WF ;

Engstrom, DR ;

Mason, RP ;

Nater, EA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1998, 32 (01) :1-7

[7] Mercury speciation in coal combustion and gasification flue gases [J].

Galbreath, KC ;

Zygarlicke, CJ .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1996, 30 (08) :2421-2426

[8] Development of a Cl-impregnated activated carbon for entrained-flow capture of elemental mercury [J].

Ghorishi, SB ;

Keeney, RM ;

Serre, SD ;

Gullett, BK ;

Jozewicz, WS .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (20) :4454-4459

[9] Photochemical removal of mercury from flue gas [J].

Granite, EJ ;

Pennline, HW .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2002, 41 (22) :5470-5476

[10]

Greenwood N.N., 1984, CHEM ELEMENTS

← 1 2 3 4 →