Emission and speciation of mercury from various combustion sources

K. S. Park, Y. C. Seo, S. J. Lee, J. H. Lee

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Characterization of mercury emission and behavior from various stationary combustion processes were carried out for the major sources including coal-fired power plants and incinerators. Emission sampling and analysis of mercury at inlet and outlet of air pollution control devices (APCDs) for various sources have been made as the first attempt in Korea and now several institutions in governmental sectors are preparing the inventory on mercury. Speciation whether mercury forms are elemental or oxidized, was also studied by employing two different types of sampling method: Ontario Hydro(OH) method and US EPA 101A. Mercury emission and speciation depended on the Hg concentration in the fuels, type of APCDs, and flue gas temperature and composition. Measurement results showed that elemental mercury (Hg0) was dominant at stack of coal power plants, while oxidized mercury was dominant at stack of incinerators, which could be due to the formation of mercury compounds in furnaces and APCDs configuration differences between them. The data for other sources were also obtained to understand the mercury emission. More intensive investigations were performed for a power plant and a municipal waste incinerator for observing the distribution of mercury at all the effluents. Mass balance of mercury in the process was figured out from the emission data and analysis results of mercury at all the in- and out-streams such as fuel (coals or wastes) fed, lime/lime stone, fly ash, bottom ash, gypsum and effluent water from wet flue-gas desulfurization(FGD). Approximate Hg mass balance could be obtained from sampled and analyzed data for those processes. However, a series of long-term and comprehensive studies are required to evaluate the reliable Hg distribution at coal-fired power plants and municipal waste incinerators. There were no significant differences between two sampling methods, but OH method seemed to have more advantage for Hg sampling from plants because mercury speciation was a very important factor for estimating the mercury emission and control efficiency from combustion flue gas.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalPowder Technology
Volume180
Issue number1-2
DOIs
Publication statusPublished - 2008 Jan 14

Fingerprint

Refuse incinerators
Mercury
Air pollution control
Power plants
Flue gases
Coal
Sampling
Ashes
Lime
Effluents
Mercury compounds
Gypsum
Desulfurization
Fly ash
Coal Ash
Furnaces
Chemical analysis
Mercury Compounds
Water
Calcium Sulfate

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Park, K. S. ; Seo, Y. C. ; Lee, S. J. ; Lee, J. H. / Emission and speciation of mercury from various combustion sources. In: Powder Technology. 2008 ; Vol. 180, No. 1-2. pp. 151-156.
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Emission and speciation of mercury from various combustion sources. / Park, K. S.; Seo, Y. C.; Lee, S. J.; Lee, J. H.

In: Powder Technology, Vol. 180, No. 1-2, 14.01.2008, p. 151-156.

Research output: Contribution to journalArticle

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