Crystal chemistry of vanadium-bearing ellestadite waste forms

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dc.contributor.authorFang, Yen_AU
dc.contributor.authorPage, SJen_AU
dc.contributor.authorRees, GJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorHanna, JVen_AU
dc.contributor.authorWhite, TJen_AU
dc.date.accessioned2021-07-08T04:05:29Zen_AU
dc.date.available2021-07-08T04:05:29Zen_AU
dc.date.issued2018-07-16en_AU
dc.date.statistics2021-06-29en_AU
dc.description.abstractVanadate ellestadites Ca10(SiO4)x(VO4)6–2x(SO4)xCl2, serving as prototype crystalline matrices for the fixation of pentavalent toxic metals (V, Cr, As), were synthesized and characterized by powder X-ray and neutron diffraction (PXRD and PND), electron probe microanalysis (EPMA), Fourier transform infrared spectroscopy (FTIR), and solid-state nuclear magnetic resonance (SS-NMR). The ellestadites 0.19 < x < 3 adopt the P63/m structure, while the vanadate endmember Ca10(VO4)6Cl2 is triclinic with space group P1̅. A miscibility gap exists for 0.77 < x < 2.44. The deficiency of Cl in the structure leads to short-range disorder in the tunnel. Toxicity characteristic leaching testing (TCLP) showed the incorporation of vanadium increases ellestadite solubility, and defined a waste loading limit that should not exceed 25 atom % V to ensure small release levels. © 2018 American Chemical Societyen_AU
dc.identifier.citationFang, Y., Page, S. J., Rees, G. J., Avdeev, M., Hanna, J. V., & White, T. J. (2018). Crystal chemistry of vanadium-bearing ellestadite waste forms. Inorganic chemistry, 57(15), 9122-9132. doi:10.1021/acs.inorgchem.8b01160en_AU
dc.identifier.issn1520-510Xen_AU
dc.identifier.issue15en_AU
dc.identifier.journaltitleInorganic chemistryen_AU
dc.identifier.pagination9122-9132en_AU
dc.identifier.urihttps://doi.org/10.1021/acs.inorgchem.8b01160en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11033en_AU
dc.identifier.volume57en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectVanadiumen_AU
dc.subjectTransition elementsen_AU
dc.subjectAnionsen_AU
dc.subjectWastesen_AU
dc.subjectMetalsen_AU
dc.subjectMagnetic resonanceen_AU
dc.subjectToxicityen_AU
dc.subjectLeachingen_AU
dc.subjectSolubilityen_AU
dc.subjectElectron microprobe analysisen_AU
dc.subjectFourier analysisen_AU
dc.titleCrystal chemistry of vanadium-bearing ellestadite waste formsen_AU
dc.typeJournal Articleen_AU
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