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

doi:10.1007/s10967-005-0019-z

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

Maricopa Agriculture Center

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

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 K_d 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 C_a = 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 language	English (US)
Pages (from-to)	97-101
Number of pages	5
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	263
Issue number	1
DOIs	https://doi.org/10.1007/s10967-005-0019-z
State	Published - Apr 27 2005

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

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title = "Sorption of plutonium(VI) by hydroxyapatite",

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.",

author = "Moore, {R. C.} and M. Gasser and N. Awwad and Holt, {K. C.} and Salas, {F. M.} and A. Hasan and Hasan, {M. A.} and H. Zhao and Sanchez, {C. A.}",

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language = "English (US)",

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T1 - Sorption of plutonium(VI) by hydroxyapatite

AU - Moore, R. C.

AU - Gasser, M.

AU - Awwad, N.

AU - Holt, K. C.

AU - Salas, F. M.

AU - Hasan, A.

AU - Hasan, M. A.

AU - Zhao, H.

AU - Sanchez, C. A.

PY - 2005/4/27

Y1 - 2005/4/27

N2 - 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.

AB - 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.

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