Uptake of caesium and strontium radioisotopes by natural zeolites from Mongolia

Alan Dyer; Anaad Chimedtsogzol; Linda Campbell; Craig Williams

doi:10.1016/j.micromeso.2006.05.013

Uptake of caesium and strontium radioisotopes by natural zeolites from Mongolia

Alan Dyer, Anaad Chimedtsogzol, Linda Campbell, Craig Williams

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

Abstract

Mongolian clinoptilolite-rich tuffs were examined for their ability to take up 137-Cs and 90-Sr/90-Y in the presence of competing cations (Na+, K+, Cs+, Ca2+, Mg2+, Sr2+), as nitrate salts, in the concentration range 10-1-10-3 M. Experiments were carried out by the batch technique and expressed as distribution coefficients. Clear differences were seen in Sr and Cs uptakes and those for Sr did not follow the trends expected from simple ion exchange theory. Results are discussed in relationship to the Si/Al framework compositions and cation contents of the zeolites, and suggestions made for the anomalies observed. It is concluded that the presence of some cations, potentially present in aqueous nuclear wastes, cause effects which can affect the use of clinoptilolite in the treatment of these wastes. © 2006 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	172-175
Number of pages	3
Journal	Microporous and Mesoporous Materials
Volume	95
Issue number	1-3
DOIs	https://doi.org/10.1016/j.micromeso.2006.05.013
Publication status	Published - 18 Oct 2006

Keywords

Cation selectivity
Clinoptilolite
Nuclear waste
Radioisotopes

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10.1016/j.micromeso.2006.05.013

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title = "Uptake of caesium and strontium radioisotopes by natural zeolites from Mongolia",

abstract = "Mongolian clinoptilolite-rich tuffs were examined for their ability to take up 137-Cs and 90-Sr/90-Y in the presence of competing cations (Na+, K+, Cs+, Ca2+, Mg2+, Sr2+), as nitrate salts, in the concentration range 10-1-10-3 M. Experiments were carried out by the batch technique and expressed as distribution coefficients. Clear differences were seen in Sr and Cs uptakes and those for Sr did not follow the trends expected from simple ion exchange theory. Results are discussed in relationship to the Si/Al framework compositions and cation contents of the zeolites, and suggestions made for the anomalies observed. It is concluded that the presence of some cations, potentially present in aqueous nuclear wastes, cause effects which can affect the use of clinoptilolite in the treatment of these wastes. {\textcopyright} 2006 Elsevier Inc. All rights reserved.",

keywords = "Cation selectivity, Clinoptilolite, Nuclear waste, Radioisotopes",

author = "Alan Dyer and Anaad Chimedtsogzol and Linda Campbell and Craig Williams",

note = "Dyer, Alan Chimedtsogzol, Anaad Campbell, Linda Williams, Craig",

year = "2006",

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doi = "10.1016/j.micromeso.2006.05.013",

language = "English",

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TY - JOUR

T1 - Uptake of caesium and strontium radioisotopes by natural zeolites from Mongolia

AU - Dyer, Alan

AU - Chimedtsogzol, Anaad

AU - Campbell, Linda

AU - Williams, Craig

N1 - Dyer, Alan Chimedtsogzol, Anaad Campbell, Linda Williams, Craig

PY - 2006/10/18

Y1 - 2006/10/18

N2 - Mongolian clinoptilolite-rich tuffs were examined for their ability to take up 137-Cs and 90-Sr/90-Y in the presence of competing cations (Na+, K+, Cs+, Ca2+, Mg2+, Sr2+), as nitrate salts, in the concentration range 10-1-10-3 M. Experiments were carried out by the batch technique and expressed as distribution coefficients. Clear differences were seen in Sr and Cs uptakes and those for Sr did not follow the trends expected from simple ion exchange theory. Results are discussed in relationship to the Si/Al framework compositions and cation contents of the zeolites, and suggestions made for the anomalies observed. It is concluded that the presence of some cations, potentially present in aqueous nuclear wastes, cause effects which can affect the use of clinoptilolite in the treatment of these wastes. © 2006 Elsevier Inc. All rights reserved.

AB - Mongolian clinoptilolite-rich tuffs were examined for their ability to take up 137-Cs and 90-Sr/90-Y in the presence of competing cations (Na+, K+, Cs+, Ca2+, Mg2+, Sr2+), as nitrate salts, in the concentration range 10-1-10-3 M. Experiments were carried out by the batch technique and expressed as distribution coefficients. Clear differences were seen in Sr and Cs uptakes and those for Sr did not follow the trends expected from simple ion exchange theory. Results are discussed in relationship to the Si/Al framework compositions and cation contents of the zeolites, and suggestions made for the anomalies observed. It is concluded that the presence of some cations, potentially present in aqueous nuclear wastes, cause effects which can affect the use of clinoptilolite in the treatment of these wastes. © 2006 Elsevier Inc. All rights reserved.

KW - Cation selectivity

KW - Clinoptilolite

KW - Nuclear waste

KW - Radioisotopes

U2 - 10.1016/j.micromeso.2006.05.013

DO - 10.1016/j.micromeso.2006.05.013

M3 - Article

SN - 1387-1811

VL - 95

SP - 172

EP - 175

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

IS - 1-3

ER -

Uptake of caesium and strontium radioisotopes by natural zeolites from Mongolia

Abstract

Keywords

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