Adsorption and kinetics of elemental mercury vapor on activated carbons impregnated with potassium iodide, hydrogen chloride, and sulfur

Ha Na Jang, Seung Ki Back, Jin Ho Sung, Bup Mook Jeong, Youn Suk Kang, Chul Kyu Lee, Jongsoo Jurng, Yongchil Seo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Coal combustion emits large amounts of elemental mercury that cannot be captured by air pollution control devices such as flue gas desulfurization because of its insolubility. Therefore, technological advances are necessary for capturing elemental mercury. We conducted various tests on adsorption of elemental mercury using KI-, HCl-, and S-impregnated activated carbons, which were compared with virgin activated carbon. Tests with virgin activated carbon revealed that the optimal adsorption temperature for capturing elemental mercury was 363 K. The adsorption efficiency for elemental mercury was nearly 100% using activated carbon impregnated with 1% and 5% KI and 1%, 5%, and 10% HCl. Through kinetic analyses of the impregnated activated carbons, the optimal equilibrium adsorption capacities of KI-, HCl-, and S-impregnated activated carbons for mercury were determined to be 333.3, 333.3, and 256.4mg/g, respectively, by using a pseudo second-order kinetic model.

Original languageEnglish
Pages (from-to)806-813
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume34
Issue number3
DOIs
Publication statusPublished - 2017 Mar 1

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Potassium iodide
Potassium Iodide
Hydrochloric Acid
Mercury
Sulfur
Activated carbon
Vapors
Adsorption
Hydrogen
Kinetics
Air pollution control
Coal combustion
Desulfurization
Flue gases
Solubility

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Jang, Ha Na ; Back, Seung Ki ; Sung, Jin Ho ; Jeong, Bup Mook ; Kang, Youn Suk ; Lee, Chul Kyu ; Jurng, Jongsoo ; Seo, Yongchil. / Adsorption and kinetics of elemental mercury vapor on activated carbons impregnated with potassium iodide, hydrogen chloride, and sulfur. In: Korean Journal of Chemical Engineering. 2017 ; Vol. 34, No. 3. pp. 806-813.
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abstract = "Coal combustion emits large amounts of elemental mercury that cannot be captured by air pollution control devices such as flue gas desulfurization because of its insolubility. Therefore, technological advances are necessary for capturing elemental mercury. We conducted various tests on adsorption of elemental mercury using KI-, HCl-, and S-impregnated activated carbons, which were compared with virgin activated carbon. Tests with virgin activated carbon revealed that the optimal adsorption temperature for capturing elemental mercury was 363 K. The adsorption efficiency for elemental mercury was nearly 100{\%} using activated carbon impregnated with 1{\%} and 5{\%} KI and 1{\%}, 5{\%}, and 10{\%} HCl. Through kinetic analyses of the impregnated activated carbons, the optimal equilibrium adsorption capacities of KI-, HCl-, and S-impregnated activated carbons for mercury were determined to be 333.3, 333.3, and 256.4mg/g, respectively, by using a pseudo second-order kinetic model.",
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Adsorption and kinetics of elemental mercury vapor on activated carbons impregnated with potassium iodide, hydrogen chloride, and sulfur. / Jang, Ha Na; Back, Seung Ki; Sung, Jin Ho; Jeong, Bup Mook; Kang, Youn Suk; Lee, Chul Kyu; Jurng, Jongsoo; Seo, Yongchil.

In: Korean Journal of Chemical Engineering, Vol. 34, No. 3, 01.03.2017, p. 806-813.

Research output: Contribution to journalArticle

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AU - Jang, Ha Na

AU - Back, Seung Ki

AU - Sung, Jin Ho

AU - Jeong, Bup Mook

AU - Kang, Youn Suk

AU - Lee, Chul Kyu

AU - Jurng, Jongsoo

AU - Seo, Yongchil

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AB - Coal combustion emits large amounts of elemental mercury that cannot be captured by air pollution control devices such as flue gas desulfurization because of its insolubility. Therefore, technological advances are necessary for capturing elemental mercury. We conducted various tests on adsorption of elemental mercury using KI-, HCl-, and S-impregnated activated carbons, which were compared with virgin activated carbon. Tests with virgin activated carbon revealed that the optimal adsorption temperature for capturing elemental mercury was 363 K. The adsorption efficiency for elemental mercury was nearly 100% using activated carbon impregnated with 1% and 5% KI and 1%, 5%, and 10% HCl. Through kinetic analyses of the impregnated activated carbons, the optimal equilibrium adsorption capacities of KI-, HCl-, and S-impregnated activated carbons for mercury were determined to be 333.3, 333.3, and 256.4mg/g, respectively, by using a pseudo second-order kinetic model.

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