Sorption of plutonium(VI) by hydroxyapatite

R. C. Moore, M. Gasser, N. Awwad, K. C. Holt, F. M. Salas, A. Hasan, M. A. Hasan, H. Zhao, C. A. Sanchez

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Abstract

The sorption of Pu(VI) by synthetic hydroxyapatite was determined in NaClO4 media. Pu(VI) sorption was determined to be rapid with equilibrium attained in 2 hours. Equilibrium experiments indicated sorption to be pH dependent with distribution constants, log Kd values, ranging from 4.11 at pH 6 to 5.92 at pH 8.5. Data collected at pH 8.0 with varying total Pu(VI) were fit to the Langmuir isotherm and yielded Langmuir constants of Ca = 0.0147 mole/mole and/C= 1.71·108l/mole. Although varying ionic strength did not have an effect on Pu(VI) sorption, a decrease in sorption was evident at high calcium and phosphate concentrations.

Original languageEnglish (US)
Pages (from-to)97-101
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume263
Issue number1
DOIs
StatePublished - Apr 27 2005

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Cite this

Moore, R. C., Gasser, M., Awwad, N., Holt, K. C., Salas, F. M., Hasan, A., Hasan, M. A., Zhao, H., & Sanchez, C. A. (2005). Sorption of plutonium(VI) by hydroxyapatite. Journal of Radioanalytical and Nuclear Chemistry, 263(1), 97-101. https://doi.org/10.1007/s10967-005-0019-z