Sorption of cesium, strontium, and yttrium radionuclides from the aqueous phase on layered double hydroxides

Sorption of 137 Cs, 85,90 Sr, and 90 Y from aqueous solutions on the solid phase of layered double hydroxides (LDHs) and layered double oxides (LDOs) of various compositions was studied. On the solid phase of Mg-Al and Cu-Al LDHs and Mg-Al LDO, the Sr and Cs radionuclides are very weakly sorbed from...

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Veröffentlicht in:Radiochemistry (New York, N.Y.) N.Y.), 2008-10, Vol.50 (5), p.493-501
Hauptverfasser: Kulyukhin, S. A., Krasavina, E. P., Gredina, I. V., Rumer, I. A., Mizina, L. V.
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container_issue 5
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container_title Radiochemistry (New York, N.Y.)
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creator Kulyukhin, S. A.
Krasavina, E. P.
Gredina, I. V.
Rumer, I. A.
Mizina, L. V.
description Sorption of 137 Cs, 85,90 Sr, and 90 Y from aqueous solutions on the solid phase of layered double hydroxides (LDHs) and layered double oxides (LDOs) of various compositions was studied. On the solid phase of Mg-Al and Cu-Al LDHs and Mg-Al LDO, the Sr and Cs radionuclides are very weakly sorbed from aqueous solutions containing 10 −5 M of the corresponding element (Cs + or Sr 2+ ). Introduction of EDTA ions into Mg-Al LDH increases the distribution coefficients K d of Sr by a factor of more than 40. After 96-h contact of the solid and liquid phases, K d of radioactive Sr in sorption from aqueous solution on Mg-Al LDH and Mg-Al LDH-EDTA is 2.4 and 100 ml g −1 , respectively. The Sr and Y radionuclides are efficiently sorbed from aqueous solutions containing 10 −5 M Sr 2+ and Y 3+ on the Mg-Nd LDH solid phase. After 5-min contact of the solid and liquid phases, K d of Sr exceeds 10 5 ml g −1 . For Y, the distribution coefficients equal to 700–800 ml g −1 are attained after 30-min contact of the solid and liquid phases. Aging of the Mg-Nd LDH precipitate does not affect its sorption properties toward Sr and Y radionuclides. With an increase in the Sr(NO 3 ) 2 concentration in the solution from 10 −5 to 10 −1 M, the distribution coefficients K d z of Sr drastically decrease (virtually to zero) and those of Y change insignificantly.
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The Sr and Y radionuclides are efficiently sorbed from aqueous solutions containing 10 −5 M Sr 2+ and Y 3+ on the Mg-Nd LDH solid phase. After 5-min contact of the solid and liquid phases, K d of Sr exceeds 10 5 ml g −1 . For Y, the distribution coefficients equal to 700–800 ml g −1 are attained after 30-min contact of the solid and liquid phases. Aging of the Mg-Nd LDH precipitate does not affect its sorption properties toward Sr and Y radionuclides. 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After 96-h contact of the solid and liquid phases, K d of radioactive Sr in sorption from aqueous solution on Mg-Al LDH and Mg-Al LDH-EDTA is 2.4 and 100 ml g −1 , respectively. The Sr and Y radionuclides are efficiently sorbed from aqueous solutions containing 10 −5 M Sr 2+ and Y 3+ on the Mg-Nd LDH solid phase. After 5-min contact of the solid and liquid phases, K d of Sr exceeds 10 5 ml g −1 . For Y, the distribution coefficients equal to 700–800 ml g −1 are attained after 30-min contact of the solid and liquid phases. Aging of the Mg-Nd LDH precipitate does not affect its sorption properties toward Sr and Y radionuclides. 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A.</creatorcontrib><creatorcontrib>Krasavina, E. P.</creatorcontrib><creatorcontrib>Gredina, I. V.</creatorcontrib><creatorcontrib>Rumer, I. A.</creatorcontrib><creatorcontrib>Mizina, L. V.</creatorcontrib><collection>CrossRef</collection><jtitle>Radiochemistry (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kulyukhin, S. A.</au><au>Krasavina, E. P.</au><au>Gredina, I. V.</au><au>Rumer, I. A.</au><au>Mizina, L. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sorption of cesium, strontium, and yttrium radionuclides from the aqueous phase on layered double hydroxides</atitle><jtitle>Radiochemistry (New York, N.Y.)</jtitle><stitle>Radiochemistry</stitle><date>2008-10-01</date><risdate>2008</risdate><volume>50</volume><issue>5</issue><spage>493</spage><epage>501</epage><pages>493-501</pages><issn>1066-3622</issn><eissn>1608-3288</eissn><abstract>Sorption of 137 Cs, 85,90 Sr, and 90 Y from aqueous solutions on the solid phase of layered double hydroxides (LDHs) and layered double oxides (LDOs) of various compositions was studied. On the solid phase of Mg-Al and Cu-Al LDHs and Mg-Al LDO, the Sr and Cs radionuclides are very weakly sorbed from aqueous solutions containing 10 −5 M of the corresponding element (Cs + or Sr 2+ ). Introduction of EDTA ions into Mg-Al LDH increases the distribution coefficients K d of Sr by a factor of more than 40. After 96-h contact of the solid and liquid phases, K d of radioactive Sr in sorption from aqueous solution on Mg-Al LDH and Mg-Al LDH-EDTA is 2.4 and 100 ml g −1 , respectively. The Sr and Y radionuclides are efficiently sorbed from aqueous solutions containing 10 −5 M Sr 2+ and Y 3+ on the Mg-Nd LDH solid phase. After 5-min contact of the solid and liquid phases, K d of Sr exceeds 10 5 ml g −1 . For Y, the distribution coefficients equal to 700–800 ml g −1 are attained after 30-min contact of the solid and liquid phases. Aging of the Mg-Nd LDH precipitate does not affect its sorption properties toward Sr and Y radionuclides. With an increase in the Sr(NO 3 ) 2 concentration in the solution from 10 −5 to 10 −1 M, the distribution coefficients K d z of Sr drastically decrease (virtually to zero) and those of Y change insignificantly.</abstract><cop>Dordrecht</cop><pub>SP MAIK Nauka/Interperiodica</pub><doi>10.1134/S1066362208050111</doi><tpages>9</tpages></addata></record>
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subjects Aluminum
Aqueous solutions
Cesium
Cesium 137
Cesium isotopes
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Coefficients
Copper
Ethylenediaminetetraacetic acids
Hydroxides
Liquid phases
Magnesium
Nuclear Chemistry
Radioisotopes
Solid phases
Sorption
Strontium
Strontium 90
Yttrium
title Sorption of cesium, strontium, and yttrium radionuclides from the aqueous phase on layered double hydroxides
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