Removal of mercury in flue gas by the reaction with sulfide compounds

Masaki Takaoka, Nobuo Takeda, Yutaka Shimaoka, Takeshi Fujiwara

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12 Citations (Scopus)

Abstract

The difficulty in the removal of mercury in flue gas of combustion processes is mainly due to the high volatility of elemental mercury. Various sulfide compounds were tested to check which compounds can convert mercury into stable mercury sulfide and remove mercury from flue gas. The results indicate that lead, cadmium, copper, antimony, tungsten, molybdenum, and palladium sulfides removed more than 80% of mercury from synthetic gas with mercury. On the other hand, zinc, silver, barium, calcium, and nickel sulfides were not effective for mercury removal and their removal efficiencies were less than 20%. The surface analysis using X-ray photoelectron spectroscopy suggested that mercury which reacted with sulfide compounds was presumed to form black mercury sulfide.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalToxicological and Environmental Chemistry
Volume73
Issue number1-2
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

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Keywords

  • Black mercury sulfide
  • Flue gas
  • Mercury
  • Sulfide compounds
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

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