Iodine sequestration using delafossites and layered hydroxides

The objective of this document is to report on the early success for sequestering ¹²⁹I. Sorption coefficients (K d) for I⁻ and IO₃ ⁻ onto delafossites, spinels and layered metal hydroxides were measured and compared for their applicability to sequester ¹²⁹I. The studies were performed using a dilute...

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Bibliographic Details
Published inEnvironmental chemistry letters Vol. 5; no. 2; pp. 85 - 89
Main Authors Pless, Jason D, Benjamin Chwirka, J, Krumhansl, James L
Format Journal Article
LanguageEnglish
Published Dordrecht Springer-Verlag 01.05.2007
Springer Nature B.V
Subjects
Aluminum
Chromium
Coefficients
Composition
Copper
Groundwater
Heavy metals
Hydroxides
iodides
Iodine
Mountain regions
Mountains
sampling
Sequestering
Sorption
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Summary:The objective of this document is to report on the early success for sequestering ¹²⁹I. Sorption coefficients (K d) for I⁻ and IO₃ ⁻ onto delafossites, spinels and layered metal hydroxides were measured and compared for their applicability to sequester ¹²⁹I. The studies were performed using a dilute fluid composition representative of groundwater indigenous to the Yucca mountain area. Delafossites generally exhibited relatively poor sorption coefficients (<35 mL/g). In contrast, the composition of the layered hydroxides significantly affects their ability to sorb I. Cu/Al and Cu/Cr layered hydroxide samples exhibit K d’s greater than 1000 mL/g for both I⁻ and IO₃ ⁻.
Bibliography:http://dx.doi.org/10.1007/s10311-006-0084-8
ISSN:1610-3653
1610-3661
DOI:10.1007/s10311-006-0084-8