Mercury(II) adsorption from wastewaters using a thiol functional adsorbent

Kwan H. Nam; Sergio Gomez-Salazar; Lawrence L. Tavlarides

doi:10.1021/ie020834l

Mercury(II) adsorption from wastewaters using a thiol functional adsorbent

Kwan H. Nam, Sergio Gomez-Salazar, Lawrence L. Tavlarides

Department of Biomedical & Chemical Engineering

Research output: Contribution to journal › Article › peer-review

112 Scopus citations

Abstract

The removal of mercury(II) from wastewaters (coal-fired utility plant scrubber solutions) using a thiol functional organoceramic composite (SOL-AD-IV) is investigated. A simulant is employed as a surrogate to demonstrate the removal of mercury from real waste solutions. Equilibrium studies show a mercury uptake capacity of 500 mg/g at a low mercury concentration of 0.5 mg/L and 726 mg/g at saturation. Adsorption is observed to be independent in the pH range 3-5. The kinetic performance assessed on a recycle batch reactor shows a rapid rate of adsorption. Selectivity is found to be in the order Hg(II) > Pb(II) ∼ Cd(II) > As(V) > Cr(III). Regeneration of SOL-AD-IV is accomplished using 12 M HCl. Effluent mercury concentrations of <0.001 mg/L are achieved using a fixed-bed adsorption column. A stability test operated for 25 cycles indicates a capacity loss of <10%. A high potential is demonstrated for application for mercury cleanup of wastewaters.

Original language	English (US)
Pages (from-to)	1955-1964
Number of pages	10
Journal	Industrial and Engineering Chemistry Research
Volume	42
Issue number	9
DOIs	https://doi.org/10.1021/ie020834l
State	Published - Apr 30 2003

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Mercury(II) adsorption from wastewaters using a thiol functional adsorbent",

abstract = "The removal of mercury(II) from wastewaters (coal-fired utility plant scrubber solutions) using a thiol functional organoceramic composite (SOL-AD-IV) is investigated. A simulant is employed as a surrogate to demonstrate the removal of mercury from real waste solutions. Equilibrium studies show a mercury uptake capacity of 500 mg/g at a low mercury concentration of 0.5 mg/L and 726 mg/g at saturation. Adsorption is observed to be independent in the pH range 3-5. The kinetic performance assessed on a recycle batch reactor shows a rapid rate of adsorption. Selectivity is found to be in the order Hg(II) > Pb(II) ∼ Cd(II) > As(V) > Cr(III). Regeneration of SOL-AD-IV is accomplished using 12 M HCl. Effluent mercury concentrations of <0.001 mg/L are achieved using a fixed-bed adsorption column. A stability test operated for 25 cycles indicates a capacity loss of <10%. A high potential is demonstrated for application for mercury cleanup of wastewaters.",

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N2 - The removal of mercury(II) from wastewaters (coal-fired utility plant scrubber solutions) using a thiol functional organoceramic composite (SOL-AD-IV) is investigated. A simulant is employed as a surrogate to demonstrate the removal of mercury from real waste solutions. Equilibrium studies show a mercury uptake capacity of 500 mg/g at a low mercury concentration of 0.5 mg/L and 726 mg/g at saturation. Adsorption is observed to be independent in the pH range 3-5. The kinetic performance assessed on a recycle batch reactor shows a rapid rate of adsorption. Selectivity is found to be in the order Hg(II) > Pb(II) ∼ Cd(II) > As(V) > Cr(III). Regeneration of SOL-AD-IV is accomplished using 12 M HCl. Effluent mercury concentrations of <0.001 mg/L are achieved using a fixed-bed adsorption column. A stability test operated for 25 cycles indicates a capacity loss of <10%. A high potential is demonstrated for application for mercury cleanup of wastewaters.

AB - The removal of mercury(II) from wastewaters (coal-fired utility plant scrubber solutions) using a thiol functional organoceramic composite (SOL-AD-IV) is investigated. A simulant is employed as a surrogate to demonstrate the removal of mercury from real waste solutions. Equilibrium studies show a mercury uptake capacity of 500 mg/g at a low mercury concentration of 0.5 mg/L and 726 mg/g at saturation. Adsorption is observed to be independent in the pH range 3-5. The kinetic performance assessed on a recycle batch reactor shows a rapid rate of adsorption. Selectivity is found to be in the order Hg(II) > Pb(II) ∼ Cd(II) > As(V) > Cr(III). Regeneration of SOL-AD-IV is accomplished using 12 M HCl. Effluent mercury concentrations of <0.001 mg/L are achieved using a fixed-bed adsorption column. A stability test operated for 25 cycles indicates a capacity loss of <10%. A high potential is demonstrated for application for mercury cleanup of wastewaters.

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Mercury(II) adsorption from wastewaters using a thiol functional adsorbent

Abstract

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