Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica

Thanapon Sangvanich, Vichaya Sukwarotwat, Robert J. Wiacek, Rafal M. Grudzien, Glen E. Fryxell, R. Shane Addleman, Charles Timchalk, Wassana Yantasee

Research output: Contribution to journalArticle

223 Citations (Scopus)

Abstract

Copper(II) ferrocyanide on mesoporous silica (FC-Cu-EDA-SAMMS™) has been evaluated against iron(III) hexacyanoferrate(II) (insoluble Prussian Blue) for removing cesium (Cs+) and thallium (Tl+) from natural waters and simulated acidic and alkaline wastes. From pH 0.1-7.3, FC-Cu-EDA-SAMMS had greater affinities for Cs and Tl and was less affected by the solution pH, competing cations, and matrices. SAMMS also outperformed Prussian Blue in terms of adsorption capacities (e.g., 21.7 versus 2.6mgCs/g in acidic waste stimulant (pH 1.1), 28.3 versus 5.8mgTl/g in seawater), and rate (e.g., over 95wt% of Cs was removed from seawater after 2min with SAMMS, while only 75wt% was removed with Prussian Blue). SAMMS also had higher stability (e.g., 2.5-13-fold less Fe dissolved from 2 to 24h of contact time). In addition to environmental applications, SAMMS has great potential to be used as orally administered drug for limiting the absorption of radioactive Cs and toxic Tl in gastrointestinal tract.

Original languageEnglish (US)
Pages (from-to)225-231
Number of pages7
JournalJournal of Hazardous Materials
Volume182
Issue number1-3
DOIs
StatePublished - Oct 2010

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thallium
Thallium
Cesium
cesium
Seawater
Silicon Dioxide
silica
Silica
copper
seawater
Copper
Water
drug
cation
Poisons
Positive ions
Iron
fold
adsorption
Adsorption

Keywords

  • Cesium
  • Ferrocyanide
  • Mesoporous silica
  • Prussian Blue
  • Thallium

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica. / Sangvanich, Thanapon; Sukwarotwat, Vichaya; Wiacek, Robert J.; Grudzien, Rafal M.; Fryxell, Glen E.; Addleman, R. Shane; Timchalk, Charles; Yantasee, Wassana.

In: Journal of Hazardous Materials, Vol. 182, No. 1-3, 10.2010, p. 225-231.

Research output: Contribution to journalArticle

Sangvanich, Thanapon ; Sukwarotwat, Vichaya ; Wiacek, Robert J. ; Grudzien, Rafal M. ; Fryxell, Glen E. ; Addleman, R. Shane ; Timchalk, Charles ; Yantasee, Wassana. / Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica. In: Journal of Hazardous Materials. 2010 ; Vol. 182, No. 1-3. pp. 225-231.
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