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Kinetics of AgI precipitation from AgCl as affected by background electrolyte

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Abstract

Iodide retention by AgCl, a potential sorbent in high-level waste (HLW) storage systems, was determined. The kinetics and steady state sorption of iodide were determined in single and mixed electrolytes of NaNO3, and NaCl at ionic strengths of 25 and 50 mM. Iodide retention involved the conversion of AgCl to AgI. This conversion increased rapidly within 0.02 hours, and retention maxima of 0.92 and 1.0 mol·l·mol−1 Ag occurred for low and high ionic strengths, respectively. These short-term studies indicated that AgCl would be an effective scavenger of I− in HLW containment systems.

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Authors and Affiliations

  1. Department of Soil Science Box 7619, North Carolina State University, Raleigh, NC, 27695-7619, USA

    D. S. McKinney & D. L. Hesterberg

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  1. D. S. McKinney
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  2. D. L. Hesterberg
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McKinney, D.S., Hesterberg, D.L. Kinetics of AgI precipitation from AgCl as affected by background electrolyte. J Radioanal Nucl Chem 273, 289–297 (2007). https://doi.org/10.1007/s10967-007-6849-0

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  • DOI: https://doi.org/10.1007/s10967-007-6849-0

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