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Long-term immobilisation of Cd2+ at the Tulul Al Hammam natural analogue site, central Jordan. / Sokol, Ella V.; Kokh, Svetlana N.; Khoury, Hani N. et al.

In: Applied Geochemistry, Vol. 70, 01.07.2016, p. 43-60.

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Sokol EV, Kokh SN, Khoury HN, Seryotkin YV, Goryainov SV. Long-term immobilisation of Cd2+ at the Tulul Al Hammam natural analogue site, central Jordan. Applied Geochemistry. 2016 Jul 1;70:43-60. doi: 10.1016/j.apgeochem.2016.05.002

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Sokol, Ella V. ; Kokh, Svetlana N. ; Khoury, Hani N. et al. / Long-term immobilisation of Cd2+ at the Tulul Al Hammam natural analogue site, central Jordan. In: Applied Geochemistry. 2016 ; Vol. 70. pp. 43-60.

BibTeX

@article{6c521b92ebaf458d8fc0a3a126af1305,
title = "Long-term immobilisation of Cd2+ at the Tulul Al Hammam natural analogue site, central Jordan",
abstract = "The Tulul Al Hammam area in central Jordan is a natural analogue site where to study long-term Cd2+ retention during the weathering of Cd-enriched combustion-metamorphic marbles with clinker-like mineralogy. Natural Cd-rich portlandite (Ca0.67-0.45Cd0.33-0.55)[OH]2 was discovered and characterised by single-crystal XRD, SEM/EDS, and microprobe analyses, and Raman spectroscopy. The Ca[OH]2 - Cd[OH]2 solid solution ((Ca1-xCdx)[OH]2) is isostructural with Ca[OH]2 and β-Cd[OH]2 crystals in the CdI2-type of structure. Cd-rich portlandite is a common secondary phase in slightly altered massive marbles, where it replaces and rims single-crystals of the high-temperature precursor (Ca1-xCdx)O. The Cd:Ca molar ratios of (Ca1-xCdx)[OH]2 are inherited from the precursor phase (Ca1-xCdx)O. Reliable long-term immobilisation of Cd in (Ca1-xCdx)[OH]2 is assumed for pore water pH values from 10.5 up to 12 buffered by C-S-Hs formed mainly during spurrite hydration. The Tulul Al Hammam site may have some bearing on long-term Cd2+ retention in the concrete matrix.",
keywords = "Cd-rich portlandite, Cement, Central Jordan, Long-term Cd retention, Natural analogue, Waste management",
author = "Sokol, {Ella V.} and Kokh, {Svetlana N.} and Khoury, {Hani N.} and Seryotkin, {Yurii V.} and Goryainov, {Sergei V.}",
year = "2016",
month = jul,
day = "1",
doi = "10.1016/j.apgeochem.2016.05.002",
language = "English",
volume = "70",
pages = "43--60",
journal = "Applied Geochemistry",
issn = "0883-2927",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Long-term immobilisation of Cd2+ at the Tulul Al Hammam natural analogue site, central Jordan

AU - Sokol, Ella V.

AU - Kokh, Svetlana N.

AU - Khoury, Hani N.

AU - Seryotkin, Yurii V.

AU - Goryainov, Sergei V.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - The Tulul Al Hammam area in central Jordan is a natural analogue site where to study long-term Cd2+ retention during the weathering of Cd-enriched combustion-metamorphic marbles with clinker-like mineralogy. Natural Cd-rich portlandite (Ca0.67-0.45Cd0.33-0.55)[OH]2 was discovered and characterised by single-crystal XRD, SEM/EDS, and microprobe analyses, and Raman spectroscopy. The Ca[OH]2 - Cd[OH]2 solid solution ((Ca1-xCdx)[OH]2) is isostructural with Ca[OH]2 and β-Cd[OH]2 crystals in the CdI2-type of structure. Cd-rich portlandite is a common secondary phase in slightly altered massive marbles, where it replaces and rims single-crystals of the high-temperature precursor (Ca1-xCdx)O. The Cd:Ca molar ratios of (Ca1-xCdx)[OH]2 are inherited from the precursor phase (Ca1-xCdx)O. Reliable long-term immobilisation of Cd in (Ca1-xCdx)[OH]2 is assumed for pore water pH values from 10.5 up to 12 buffered by C-S-Hs formed mainly during spurrite hydration. The Tulul Al Hammam site may have some bearing on long-term Cd2+ retention in the concrete matrix.

AB - The Tulul Al Hammam area in central Jordan is a natural analogue site where to study long-term Cd2+ retention during the weathering of Cd-enriched combustion-metamorphic marbles with clinker-like mineralogy. Natural Cd-rich portlandite (Ca0.67-0.45Cd0.33-0.55)[OH]2 was discovered and characterised by single-crystal XRD, SEM/EDS, and microprobe analyses, and Raman spectroscopy. The Ca[OH]2 - Cd[OH]2 solid solution ((Ca1-xCdx)[OH]2) is isostructural with Ca[OH]2 and β-Cd[OH]2 crystals in the CdI2-type of structure. Cd-rich portlandite is a common secondary phase in slightly altered massive marbles, where it replaces and rims single-crystals of the high-temperature precursor (Ca1-xCdx)O. The Cd:Ca molar ratios of (Ca1-xCdx)[OH]2 are inherited from the precursor phase (Ca1-xCdx)O. Reliable long-term immobilisation of Cd in (Ca1-xCdx)[OH]2 is assumed for pore water pH values from 10.5 up to 12 buffered by C-S-Hs formed mainly during spurrite hydration. The Tulul Al Hammam site may have some bearing on long-term Cd2+ retention in the concrete matrix.

KW - Cd-rich portlandite

KW - Cement

KW - Central Jordan

KW - Long-term Cd retention

KW - Natural analogue

KW - Waste management

UR - http://www.scopus.com/inward/record.url?scp=84971290742&partnerID=8YFLogxK

U2 - 10.1016/j.apgeochem.2016.05.002

DO - 10.1016/j.apgeochem.2016.05.002

M3 - Article

AN - SCOPUS:84971290742

VL - 70

SP - 43

EP - 60

JO - Applied Geochemistry

JF - Applied Geochemistry

SN - 0883-2927

ER -

ID: 25760927