The leaching of Se, Sn, Zr, Pd from vitrified high-level waste in clay slurries

Pierre Van Iseghem; Karel Lemmens; Véra Pirlet; Pierre De Cannière

The leaching of Se, Sn, Zr, Pd from vitrified high-level waste in clay slurries

Pierre Van Iseghem, Karel Lemmens, Véra Pirlet, Pierre De Cannière

Research output › peer-review

Abstract

79Se, 126Sn, 93Zr, and 107Pd are amongst the most critical radionuclides for the long-term safety of geological disposal of vitrified high-level waste or spent fuel in the Boom Clay candidate formation in Belgium. We therefore investigated the leaching behaviour of their inactive isotopes from reference HLW glass SON68, and we determined in particular the steady-state concentrations in near-field conditions of these elements. Some of the most important conclusions of this study are: - release of the radioactive Se, Sn, Pd, Zr from HLW glass does not seem to increase their respective element concentration in the pore solution of a natural Boom Clay environment - the Se (VI) release is not solubility limited, whereas Sn, Pd, Zr are solubility limited

Original language	English
Title of host publication	Mobile Fission and Activation Products in Nuclear Waste Disposal. Workshop Proceedings
Place of Publication	Issy-les-Moulineaux, France
Pages	247-257
State	Published - Aug 2009
Event	Mobile Fission and Activation Products in Nuclear Waste Disposal - OECD/NEA, La Baule Duration: 16 Jan 2007 → 19 Jan 2007

Conference

Conference	Mobile Fission and Activation Products in Nuclear Waste Disposal
Country/Territory	France
City	La Baule
Period	2007-01-16 → 2007-01-19

Cite this

@inproceedings{d364924925934be4a6349ba09345defd,

title = "The leaching of Se, Sn, Zr, Pd from vitrified high-level waste in clay slurries",

abstract = "79Se, 126Sn, 93Zr, and 107Pd are amongst the most critical radionuclides for the long-term safety of geological disposal of vitrified high-level waste or spent fuel in the Boom Clay candidate formation in Belgium. We therefore investigated the leaching behaviour of their inactive isotopes from reference HLW glass SON68, and we determined in particular the steady-state concentrations in near-field conditions of these elements. Some of the most important conclusions of this study are: - release of the radioactive Se, Sn, Pd, Zr from HLW glass does not seem to increase their respective element concentration in the pore solution of a natural Boom Clay environment - the Se (VI) release is not solubility limited, whereas Sn, Pd, Zr are solubility limited",

keywords = "high-level waste glass, 79Se, 126Sn, 93Zr, 107Pd, Boom Clay, leaching, solubility, speciation",

author = "{Van Iseghem}, Pierre and Karel Lemmens and V{\'e}ra Pirlet and {De Canni{\`e}re}, Pierre",

note = "Score = 3; Mobile Fission and Activation Products in Nuclear Waste Disposal ; Conference date: 16-01-2007 Through 19-01-2007",

year = "2009",

month = aug,

language = "English",

isbn = "978-92-64-99072-2",

pages = "247--257",

booktitle = "Mobile Fission and Activation Products in Nuclear Waste Disposal. Workshop Proceedings",

}

Van Iseghem, P, Lemmens, K, Pirlet, V & De Cannière, P 2009, The leaching of Se, Sn, Zr, Pd from vitrified high-level waste in clay slurries. in Mobile Fission and Activation Products in Nuclear Waste Disposal. Workshop Proceedings. Issy-les-Moulineaux, France, pp. 247-257, Mobile Fission and Activation Products in Nuclear Waste Disposal, La Baule, France, 2007-01-16.

TY - GEN

T1 - The leaching of Se, Sn, Zr, Pd from vitrified high-level waste in clay slurries

AU - Van Iseghem, Pierre

AU - Lemmens, Karel

AU - Pirlet, Véra

A2 - De Cannière, Pierre

N1 - Score = 3

PY - 2009/8

Y1 - 2009/8

N2 - 79Se, 126Sn, 93Zr, and 107Pd are amongst the most critical radionuclides for the long-term safety of geological disposal of vitrified high-level waste or spent fuel in the Boom Clay candidate formation in Belgium. We therefore investigated the leaching behaviour of their inactive isotopes from reference HLW glass SON68, and we determined in particular the steady-state concentrations in near-field conditions of these elements. Some of the most important conclusions of this study are: - release of the radioactive Se, Sn, Pd, Zr from HLW glass does not seem to increase their respective element concentration in the pore solution of a natural Boom Clay environment - the Se (VI) release is not solubility limited, whereas Sn, Pd, Zr are solubility limited

AB - 79Se, 126Sn, 93Zr, and 107Pd are amongst the most critical radionuclides for the long-term safety of geological disposal of vitrified high-level waste or spent fuel in the Boom Clay candidate formation in Belgium. We therefore investigated the leaching behaviour of their inactive isotopes from reference HLW glass SON68, and we determined in particular the steady-state concentrations in near-field conditions of these elements. Some of the most important conclusions of this study are: - release of the radioactive Se, Sn, Pd, Zr from HLW glass does not seem to increase their respective element concentration in the pore solution of a natural Boom Clay environment - the Se (VI) release is not solubility limited, whereas Sn, Pd, Zr are solubility limited

KW - high-level waste glass

KW - 79Se

KW - 126Sn

KW - 93Zr

KW - 107Pd

KW - Boom Clay

KW - leaching

KW - solubility

KW - speciation

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_99035

UR - http://knowledgecentre.sckcen.be/so2/bibref/5947

M3 - In-proceedings paper

SN - 978-92-64-99072-2

SP - 247

EP - 257

BT - Mobile Fission and Activation Products in Nuclear Waste Disposal. Workshop Proceedings

CY - Issy-les-Moulineaux, France

T2 - Mobile Fission and Activation Products in Nuclear Waste Disposal

Y2 - 16 January 2007 through 19 January 2007

ER -