Removal of Hg(II) from aquatic environments using activated carbon impregnated with humic acid

Gang Jin, Yujin Eom, Tai Gyu Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The removal of Hg from aquatic environments using activated carbon (AC) impregnated with humic acid was investigated. The Hg adsorption capacity of the AC was controlled by the specific surface area and by surface functional groups, and the Hg adsorption process was exothermic and more effective at low pH. The Hg adsorption process in this study corresponds to a Lagergren pseudo-2nd-order model, indicating that it is controlled by the chemical rather than the physical properties of the AC. In addition, the equilibrium isotherm data fit the Langmuir isotherm better than the Freundlich model, indicating that the AC surfaces were uniform and that a Hg adsorbate monolayer formed at equilibrium.

Original languageEnglish
Pages (from-to)46-52
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Volume42
DOIs
Publication statusPublished - 2016 Oct 25

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Humic Substances
Activated carbon
Adsorption
Isotherms
Adsorbates
Specific surface area
Functional groups
Monolayers
Physical properties

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "The removal of Hg from aquatic environments using activated carbon (AC) impregnated with humic acid was investigated. The Hg adsorption capacity of the AC was controlled by the specific surface area and by surface functional groups, and the Hg adsorption process was exothermic and more effective at low pH. The Hg adsorption process in this study corresponds to a Lagergren pseudo-2nd-order model, indicating that it is controlled by the chemical rather than the physical properties of the AC. In addition, the equilibrium isotherm data fit the Langmuir isotherm better than the Freundlich model, indicating that the AC surfaces were uniform and that a Hg adsorbate monolayer formed at equilibrium.",
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Removal of Hg(II) from aquatic environments using activated carbon impregnated with humic acid. / Jin, Gang; Eom, Yujin; Lee, Tai Gyu.

In: Journal of Industrial and Engineering Chemistry, Vol. 42, 25.10.2016, p. 46-52.

Research output: Contribution to journalArticle

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AB - The removal of Hg from aquatic environments using activated carbon (AC) impregnated with humic acid was investigated. The Hg adsorption capacity of the AC was controlled by the specific surface area and by surface functional groups, and the Hg adsorption process was exothermic and more effective at low pH. The Hg adsorption process in this study corresponds to a Lagergren pseudo-2nd-order model, indicating that it is controlled by the chemical rather than the physical properties of the AC. In addition, the equilibrium isotherm data fit the Langmuir isotherm better than the Freundlich model, indicating that the AC surfaces were uniform and that a Hg adsorbate monolayer formed at equilibrium.

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