Mercury analysis of various types of coal using acid extraction and pyrolysis methods

Jae Young Park, Jong Hyun Won, Tai Gyu Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The mercury contents of various types of coal currently consumed in Korea were analyzed using acid extraction and pyrolysis methods. The results of analysis by acid extraction and pyrolysis methods were compared and discussed. Generally, high mercury concentrations of 105.6 to 434.5 ng/g (by acid extraction) and 125.7 to 475.4 ng/g (by pyrolysis) were obtained for tested anthracite coals in this study. For bituminous coals, the mercury contents were 11.5-48 ng/g (by acid extraction) and 12.5-52.4 ng/g (by pyrolysis). For coal samples, much simpler and far less time-consuming pyrolysis method tends to give higher values for the Hg concentration than the acid extraction method (by less than 10%) because of the interference from a UV absorption by SOx generated during thermal destruction of coal matrix. Also, further analysis shows that coals with higher densities have higher mercury contents and that the sulfur and mercury contents of coals are positively correlated with each other.

Original languageEnglish
Pages (from-to)2413-2416
Number of pages4
JournalEnergy and Fuels
Volume20
Issue number6
DOIs
Publication statusPublished - 2006 Nov 1

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Coal
Mercury
Pyrolysis
Acids
Anthracite
Bituminous coal
Sulfur

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Park, Jae Young ; Won, Jong Hyun ; Lee, Tai Gyu. / Mercury analysis of various types of coal using acid extraction and pyrolysis methods. In: Energy and Fuels. 2006 ; Vol. 20, No. 6. pp. 2413-2416.
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Mercury analysis of various types of coal using acid extraction and pyrolysis methods. / Park, Jae Young; Won, Jong Hyun; Lee, Tai Gyu.

In: Energy and Fuels, Vol. 20, No. 6, 01.11.2006, p. 2413-2416.

Research output: Contribution to journalArticle

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AB - The mercury contents of various types of coal currently consumed in Korea were analyzed using acid extraction and pyrolysis methods. The results of analysis by acid extraction and pyrolysis methods were compared and discussed. Generally, high mercury concentrations of 105.6 to 434.5 ng/g (by acid extraction) and 125.7 to 475.4 ng/g (by pyrolysis) were obtained for tested anthracite coals in this study. For bituminous coals, the mercury contents were 11.5-48 ng/g (by acid extraction) and 12.5-52.4 ng/g (by pyrolysis). For coal samples, much simpler and far less time-consuming pyrolysis method tends to give higher values for the Hg concentration than the acid extraction method (by less than 10%) because of the interference from a UV absorption by SOx generated during thermal destruction of coal matrix. Also, further analysis shows that coals with higher densities have higher mercury contents and that the sulfur and mercury contents of coals are positively correlated with each other.

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