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

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

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-...

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Main Authors: Fang, Ya Nan, Ritter, Clemens, White, Timothy John
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2017
Subjects:
Toxic metals
Apatites
Online Access:https://hdl.handle.net/10356/85607
http://hdl.handle.net/10220/43743
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-856072021-01-07T03:44:50Z Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization Fang, Ya Nan Ritter, Clemens White, Timothy John School of Materials Science & Engineering Energy Research Institute @ NTU (ERI@N) Toxic metals Apatites 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. Accepted version 2017-09-15T07:15:26Z 2019-12-06T16:07:01Z 2017-09-15T07:15:26Z 2019-12-06T16:07:01Z 2014 Journal Article Fang, Y. N., Ritter, C., & White, T. J. (2014). Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization. Dalton Transactions, 43(42), 16031-16043. 1477-9226 https://hdl.handle.net/10356/85607 http://hdl.handle.net/10220/43743 10.1039/C4DT02088J en Dalton Transactions © 2014 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Dalton Transactions, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C4DT02088J]. 13 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Toxic metals
Apatites
spellingShingle Toxic metals
Apatites
Fang, Ya Nan
Ritter, Clemens
White, Timothy John
Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
description 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.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Fang, Ya Nan
Ritter, Clemens
White, Timothy John
format Article
author Fang, Ya Nan
Ritter, Clemens
White, Timothy John
author_sort Fang, Ya Nan
title Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
title_short Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
title_full Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
title_fullStr Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
title_full_unstemmed Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
title_sort crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization
publishDate 2017
url https://hdl.handle.net/10356/85607
http://hdl.handle.net/10220/43743
_version_ 1688665494470524928

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