The dissolution of simulant UK Ca/Zn-modified nuclear waste glass: Insight into Stage III behavior

Adam J. Fisher; Mike T. Harrison; Neil C. Hyatt; Russell J. Hand; Claire L. Corkhill

doi:10.1557/ADV.2020.50

The dissolution of simulant UK Ca/Zn-modified nuclear waste glass: Insight into Stage III behavior

Adam J. Fisher, Mike T. Harrison, Neil C. Hyatt, Russell J. Hand, Claire L. Corkhill

Research output: Contribution to journal › Article (Academic Journal) › peer-review

10 Citations (Scopus)

Abstract

The dissolution of the United Kingdom’s vitrified high-level-waste simulant, CaZn MW28, was investigated following the Product Consistency Test-B protocol for 112 d at 90^oC and in ultra-high-quality water. Residual rate dissolution (stage II) and rate resumption (stage III), after 28 d, was observed. Thermodynamic modelling suggested that solutions were saturated with respect to Mg-and Zn-bearing phases, and the presence of Mg-and Zn-smectite clays was tentatively observed. The formation of these phases was concurrent with a significant increase in the dissolution rate, similar to Stage III behavior seen in other nuclear waste simulant glass materials, indicating that the addition of Mg and Zn to high-level-waste glass (7.3 wt. % combined) significantly influences the dissolution rate.

Original language	English
Pages (from-to)	103-109
Number of pages	7
Journal	MRS Advances
Volume	5
DOIs	https://doi.org/10.1557/ADV.2020.50
Publication status	Published - 13 Sept 2020

Bibliographical note

Publisher Copyright:
© 2020 Materials Research Society.

Access to Document

10.1557/ADV.2020.50

Handle.net

Persistent link

Cite this

@article{7748ebc19b5b4f03a7e47ff5a17617dc,

title = "The dissolution of simulant UK Ca/Zn-modified nuclear waste glass: Insight into Stage III behavior",

abstract = "The dissolution of the United Kingdom{\textquoteright}s vitrified high-level-waste simulant, CaZn MW28, was investigated following the Product Consistency Test-B protocol for 112 d at 90oC and in ultra-high-quality water. Residual rate dissolution (stage II) and rate resumption (stage III), after 28 d, was observed. Thermodynamic modelling suggested that solutions were saturated with respect to Mg-and Zn-bearing phases, and the presence of Mg-and Zn-smectite clays was tentatively observed. The formation of these phases was concurrent with a significant increase in the dissolution rate, similar to Stage III behavior seen in other nuclear waste simulant glass materials, indicating that the addition of Mg and Zn to high-level-waste glass (7.3 wt. % combined) significantly influences the dissolution rate.",

author = "Fisher, {Adam J.} and Harrison, {Mike T.} and Hyatt, {Neil C.} and Hand, {Russell J.} and Corkhill, {Claire L.}",

note = "Publisher Copyright: {\textcopyright} 2020 Materials Research Society.",

year = "2020",

month = sep,

day = "13",

doi = "10.1557/ADV.2020.50",

language = "English",

volume = "5",

pages = "103--109",

journal = "MRS Advances",

issn = "2059-8521",

publisher = "Cambridge University Press",

}

TY - JOUR

T1 - The dissolution of simulant UK Ca/Zn-modified nuclear waste glass

T2 - Insight into Stage III behavior

AU - Fisher, Adam J.

AU - Harrison, Mike T.

AU - Hyatt, Neil C.

AU - Hand, Russell J.

AU - Corkhill, Claire L.

PY - 2020/9/13

Y1 - 2020/9/13

N2 - The dissolution of the United Kingdom’s vitrified high-level-waste simulant, CaZn MW28, was investigated following the Product Consistency Test-B protocol for 112 d at 90oC and in ultra-high-quality water. Residual rate dissolution (stage II) and rate resumption (stage III), after 28 d, was observed. Thermodynamic modelling suggested that solutions were saturated with respect to Mg-and Zn-bearing phases, and the presence of Mg-and Zn-smectite clays was tentatively observed. The formation of these phases was concurrent with a significant increase in the dissolution rate, similar to Stage III behavior seen in other nuclear waste simulant glass materials, indicating that the addition of Mg and Zn to high-level-waste glass (7.3 wt. % combined) significantly influences the dissolution rate.

AB - The dissolution of the United Kingdom’s vitrified high-level-waste simulant, CaZn MW28, was investigated following the Product Consistency Test-B protocol for 112 d at 90oC and in ultra-high-quality water. Residual rate dissolution (stage II) and rate resumption (stage III), after 28 d, was observed. Thermodynamic modelling suggested that solutions were saturated with respect to Mg-and Zn-bearing phases, and the presence of Mg-and Zn-smectite clays was tentatively observed. The formation of these phases was concurrent with a significant increase in the dissolution rate, similar to Stage III behavior seen in other nuclear waste simulant glass materials, indicating that the addition of Mg and Zn to high-level-waste glass (7.3 wt. % combined) significantly influences the dissolution rate.

UR - http://www.scopus.com/inward/record.url?scp=85086871855&partnerID=8YFLogxK

U2 - 10.1557/ADV.2020.50

DO - 10.1557/ADV.2020.50

M3 - Article (Academic Journal)

AN - SCOPUS:85086871855

SN - 2059-8521

VL - 5

SP - 103

EP - 109

JO - MRS Advances

JF - MRS Advances

ER -

The dissolution of simulant UK Ca/Zn-modified nuclear waste glass: Insight into Stage III behavior

Abstract

Bibliographical note

Access to Document

Handle.net

Other files and links

Fingerprint

Cite this