Crystal chemical characteristics of ellestadite-type apatite: Implications for toxic metal immobilization

Y. N. Fang; Clemens Ritter; T. J. White

doi:10.1039/c4dt02088j

Crystal chemical characteristics of ellestadite-type apatite: Implications for toxic metal immobilization

Y. N. Fang^*, Clemens Ritter, T. J. White

^*Corresponding author for this work

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

20 Citations (Scopus)

Abstract

The ellestadite apatites Ca₁₀[(SiO₄)_x(PO₄)_6-2x(SO₄)_x]Cl₂ were studied by powder X-ray and neutron diffraction to establish baseline crystallographic data. These synthetic materials, unlike mineral specimens that are well equilibrated, show no Si/P/S ordering and conform to P6₃/m symmetry. Phosphate-rich ellestadites where 0 ≤ x ≤ 1 show chemical stability towards Toxicity Characterization Leaching Procedure (TCLP) testing and are potential immobilization matrices for mixed toxic metal wastes.

Original language	English
Pages (from-to)	16031-16043
Number of pages	13
Journal	Dalton Transactions
Volume	43
Issue number	42
DOIs	https://doi.org/10.1039/c4dt02088j
Publication status	Published - Nov 14 2014
Externally published	Yes

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Publisher Copyright:
© the Partner Organisations 2014.

ASJC Scopus Subject Areas

Inorganic Chemistry

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abstract = "The ellestadite apatites Ca10[(SiO4)x(PO4)6-2x(SO4)x]Cl2 were studied by powder X-ray and neutron diffraction to establish baseline crystallographic data. These synthetic materials, unlike mineral specimens that are well equilibrated, show no Si/P/S ordering and conform to P63/m symmetry. Phosphate-rich ellestadites where 0 ≤ x ≤ 1 show chemical stability towards Toxicity Characterization Leaching Procedure (TCLP) testing and are potential immobilization matrices for mixed toxic metal wastes.",

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AU - Fang, Y. N.

AU - Ritter, Clemens

AU - White, T. J.

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PY - 2014/11/14

Y1 - 2014/11/14

N2 - The ellestadite apatites Ca10[(SiO4)x(PO4)6-2x(SO4)x]Cl2 were studied by powder X-ray and neutron diffraction to establish baseline crystallographic data. These synthetic materials, unlike mineral specimens that are well equilibrated, show no Si/P/S ordering and conform to P63/m symmetry. Phosphate-rich ellestadites where 0 ≤ x ≤ 1 show chemical stability towards Toxicity Characterization Leaching Procedure (TCLP) testing and are potential immobilization matrices for mixed toxic metal wastes.

AB - The ellestadite apatites Ca10[(SiO4)x(PO4)6-2x(SO4)x]Cl2 were studied by powder X-ray and neutron diffraction to establish baseline crystallographic data. These synthetic materials, unlike mineral specimens that are well equilibrated, show no Si/P/S ordering and conform to P63/m symmetry. Phosphate-rich ellestadites where 0 ≤ x ≤ 1 show chemical stability towards Toxicity Characterization Leaching Procedure (TCLP) testing and are potential immobilization matrices for mixed toxic metal wastes.

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ER -

Crystal chemical characteristics of ellestadite-type apatite: Implications for toxic metal immobilization

Abstract

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ASJC Scopus Subject Areas

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