Environmental Chemistry Letters

, Volume 5, Issue 2, pp 85–89 | Cite as

Iodine sequestration using delafossites and layered hydroxides

  • Jason D. Pless
  • J. Benjamin Chwirka
  • James L. Krumhansl
Original paper


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 .


Iodide sequestration Iodate sequestration Hydrotalcites Delafossites 



The authors thank R. Bontchev, K. Helean and K. Holt for helpful discussions. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Jason D. Pless
    • 1
  • J. Benjamin Chwirka
    • 1
  • James L. Krumhansl
    • 1
  1. 1.Sandia National LaboratoriesAlbuquerqueUSA

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