Development of sorbents for the removal of elemental mercury in the form of mercury sulfide from coal combustion flue gas

M. Azhar Uddin; Yuki Yamaji; Shengji Wu; Eiji Sasaoka

Development of sorbents for the removal of elemental mercury in the form of mercury sulfide from coal combustion flue gas

M. Azhar Uddin, Yuki Yamaji, Shengji Wu, Eiji Sasaoka

Institute for Global Human Resource Development

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The purpose of this study is removal of elemental mercury in the form of HgS in the coal combustion flue gases with sorbents like activated carbon (AC) and iron sulfides. For coconut shell AC, Hg removal was enhanced by the presence of H₂S in the absence or presence of low concentration of HCl, therefore it is thought that Hg was removed mainly in the form of HgS. At high concentration of HCl, Hg removal was enhanced greatly by forming Hg-Cl compounds (such as HgCl₂ and/or Hg₂Cl₂). When FeS ₂ was used as a sorbent, a high level of Hg removal (comparable to coconut shell AC) was observed even in the absence of H₂S and in the presence of a high concentration of HCl. Re-structured FeS₂ ores (by kneading) showed a very high level of Hg removal performance probably due to the exposure of large amount of sulfur (S) at the surface of the sorbents.

Original language	English
Title of host publication	24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
Pages	416-427
Number of pages	12
Publication status	Published - Dec 1 2007
Event	24th Annual International Pittsburgh Coal Conference 2007, PCC 2007 - Johannesburg, South Africa Duration: Sep 10 2007 → Sep 14 2007

Publication series

Name	24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
Volume	1

Other

Other	24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
Country	South Africa
City	Johannesburg
Period	9/10/07 → 9/14/07

ASJC Scopus subject areas

Geochemistry and Petrology
Geotechnical Engineering and Engineering Geology

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Development of sorbents for the removal of elemental mercury in the form of mercury sulfide from coal combustion flue gas. / Azhar Uddin, M.; Yamaji, Yuki; Wu, Shengji; Sasaoka, Eiji.

24th Annual International Pittsburgh Coal Conference 2007, PCC 2007. 2007. p. 416-427 (24th Annual International Pittsburgh Coal Conference 2007, PCC 2007; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Azhar Uddin, M, Yamaji, Y, Wu, S & Sasaoka, E 2007, Development of sorbents for the removal of elemental mercury in the form of mercury sulfide from coal combustion flue gas. in 24th Annual International Pittsburgh Coal Conference 2007, PCC 2007. 24th Annual International Pittsburgh Coal Conference 2007, PCC 2007, vol. 1, pp. 416-427, 24th Annual International Pittsburgh Coal Conference 2007, PCC 2007, Johannesburg, South Africa, 9/10/07.

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title = "Development of sorbents for the removal of elemental mercury in the form of mercury sulfide from coal combustion flue gas",

abstract = "The purpose of this study is removal of elemental mercury in the form of HgS in the coal combustion flue gases with sorbents like activated carbon (AC) and iron sulfides. For coconut shell AC, Hg removal was enhanced by the presence of H2S in the absence or presence of low concentration of HCl, therefore it is thought that Hg was removed mainly in the form of HgS. At high concentration of HCl, Hg removal was enhanced greatly by forming Hg-Cl compounds (such as HgCl2 and/or Hg2Cl2). When FeS 2 was used as a sorbent, a high level of Hg removal (comparable to coconut shell AC) was observed even in the absence of H2S and in the presence of a high concentration of HCl. Re-structured FeS2 ores (by kneading) showed a very high level of Hg removal performance probably due to the exposure of large amount of sulfur (S) at the surface of the sorbents.",

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AU - Azhar Uddin, M.

AU - Yamaji, Yuki

AU - Wu, Shengji

AU - Sasaoka, Eiji

PY - 2007/12/1

Y1 - 2007/12/1

N2 - The purpose of this study is removal of elemental mercury in the form of HgS in the coal combustion flue gases with sorbents like activated carbon (AC) and iron sulfides. For coconut shell AC, Hg removal was enhanced by the presence of H2S in the absence or presence of low concentration of HCl, therefore it is thought that Hg was removed mainly in the form of HgS. At high concentration of HCl, Hg removal was enhanced greatly by forming Hg-Cl compounds (such as HgCl2 and/or Hg2Cl2). When FeS 2 was used as a sorbent, a high level of Hg removal (comparable to coconut shell AC) was observed even in the absence of H2S and in the presence of a high concentration of HCl. Re-structured FeS2 ores (by kneading) showed a very high level of Hg removal performance probably due to the exposure of large amount of sulfur (S) at the surface of the sorbents.

AB - The purpose of this study is removal of elemental mercury in the form of HgS in the coal combustion flue gases with sorbents like activated carbon (AC) and iron sulfides. For coconut shell AC, Hg removal was enhanced by the presence of H2S in the absence or presence of low concentration of HCl, therefore it is thought that Hg was removed mainly in the form of HgS. At high concentration of HCl, Hg removal was enhanced greatly by forming Hg-Cl compounds (such as HgCl2 and/or Hg2Cl2). When FeS 2 was used as a sorbent, a high level of Hg removal (comparable to coconut shell AC) was observed even in the absence of H2S and in the presence of a high concentration of HCl. Re-structured FeS2 ores (by kneading) showed a very high level of Hg removal performance probably due to the exposure of large amount of sulfur (S) at the surface of the sorbents.

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BT - 24th Annual International Pittsburgh Coal Conference 2007, PCC 2007

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