Sorption of Cesium on Zinc Hexacyanoferrate(II), Zinc Hexacyanoferrate(III) and Hexacyanocobaltate(III)

Mekhail, F. M.; Benyamin, K.

doi:10.1524/ract.1991.55.2.95

Cited by 12 publications

(8 citation statements)

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“…Many different metal ferrocyanides have been prepared and their structure and ion exchange properties have been investigated [26][27][28][29][30][31][32][33]. The advantages of these ion exchangers are their stability in acidic to moderately alkaline medium and their radiation and temperature stability.…”

Section: Ferrocyanide Samms For Binding Csmentioning

confidence: 99%

Actinide-Specific Interfacial Chemistry of Monolayer Coated Mesoporous Ceramics

Fryxell¹,

Kemner²,

Raymond³

et al. 1999

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Section: Ferrocyanide Samms For Binding Csmentioning

confidence: 99%

Actinide-Specific Interfacial Chemistry of Monolayer Coated Mesoporous Ceramics

Fryxell¹,

Kemner²,

Raymond³

et al. 1999

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“…In general, the stability of the cyano complexes, KM n [Me(CN)6], as far as pH is concerned, depends on the nature of the precipitating divalent cation M n and also the transition metal cation Me [8]. A compilation of some useful data on the zinc salts of the three cyano complexes, HCC, and hexacyanoferrates (II, III) has been reported [8].…”

Section: Chemical Precipitationmentioning

confidence: 99%

“…A compilation of some useful data on the zinc salts of the three cyano complexes, HCC, and hexacyanoferrates (II, III) has been reported [8].…”

Section: Chemical Precipitationmentioning

confidence: 99%

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On the use of hexacyanocobaltates in the separation of caesium from radioactive waste solutions

Mekhail

Aly

1999

Czech J Phys

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This paper reviews our work on the use ofhexacyanocobaltate salts in the chemical treatment of radioactive waste solutions. The divalent cations of the 3d-block elements together with the hexacyanocobaltate moiety form insoluble polymeric coordination compounds. These compounds have been used as chemical precipitants or ion exchangers for the separation ofradiocesium from various simulated and actual waste solutions. Precipitation in situ has been performed by using various hexacyanocobaltate salts of the divalent cations ofMn, Fe, Co and Ni. The results showed that Co 2 § and Ni 2 § salts have high selectivity for caesium. The presence of monovalent cations and detergent has significant effect on the precipitation process. On the other hand Cd 2 § salt has been found to be more stable than other salts in alkaline medium. As ion exchanger the sorption properties ofhexacyanocobaltate salts were studied. Adsorption of a cesium seems to proceed via an ion exchange mechanism. It has been used for the treatment of reprocessing medium active waste solution. A decontamination factor of about 103 has been achieved.

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“…Considerable interest has been directed towards new inorganic exchangers [1][2][3], especially metal hexacyanoferrates(II) [4][5][6][7][8][9] and more recently towards composite ion exchangers [10]. Hexacyanoferrate(II) composite ion exchangers of transition metals were synthesized for the selective sorption of alkali ions, especially of radiocesium from cooling water of the PWR reactors [11 -15], Composite ion exchangers are generally obtained by implantation of inorganic ion exchangers into the organic matrix of a phenolsulphonated resin during the polymerisation [16].…”

Section: Introductionmentioning

confidence: 99%