TY - JOUR
T1 - Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica
AU - Sangvanich, Thanapon
AU - Sukwarotwat, Vichaya
AU - Wiacek, Robert J.
AU - Grudzien, Rafal M.
AU - Fryxell, Glen E.
AU - Addleman, R. Shane
AU - Timchalk, Charles
AU - Yantasee, Wassana
N1 - Funding Information:
The work was supported by the National Institute of Allergy and Infectious Disease (NIAID) , grant# R01 AI074064 and the National Institute of Environmental Health Sciences (NIEHS) , grant# R21 ES015620 . A portion of research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.
PY - 2010/10
Y1 - 2010/10
N2 - 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.
AB - 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.
KW - Cesium
KW - Ferrocyanide
KW - Mesoporous silica
KW - Prussian Blue
KW - Thallium
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U2 - 10.1016/j.jhazmat.2010.06.019
DO - 10.1016/j.jhazmat.2010.06.019
M3 - Article
C2 - 20594644
AN - SCOPUS:77955570495
SN - 0304-3894
VL - 182
SP - 225
EP - 231
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -