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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
Pages416-427
Number of pages12
Publication statusPublished - Dec 1 2007
Event24th Annual International Pittsburgh Coal Conference 2007, PCC 2007 - Johannesburg, South Africa
Duration: Sep 10 2007Sep 14 2007

Publication series

Name24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
Volume1

Other

Other24th Annual International Pittsburgh Coal Conference 2007, PCC 2007
CountrySouth Africa
CityJohannesburg
Period9/10/079/14/07

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

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