Long-term geochemical evolution of the near field repository: Insights from reactive transport modelling and experimental evidences

David Arcos (Corresponding Author), Fidel Grandia, Cristina Domènech, Ana M. Fernández, María V. Villar, Arto Muurinen, Torbjörn Carlsson, Patrik Sellin, Pedro Hernán

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

The KBS-3 underground nuclear waste repository concept designed by the Swedish Nuclear Fuel and Waste Management Co. (SKB) includes a bentonite buffer barrier surrounding the copper canisters and the iron insert where spent nuclear fuel will be placed. Bentonite is also part of the backfill material used to seal the access and deposition tunnels of the repository. The bentonite barrier has three main safety functions: to ensure the physical stability of the canister, to retard the intrusion of groundwater to the canisters, and in case of canister failure, to retard the migration of radionuclides to the geosphere. Laboratory experiments (< 10 years long) have provided evidence of the control exerted by accessory minerals and clay surfaces on the pore water chemistry. The evolution of the pore water chemistry will be a primordial factor on the long-term stability of the bentonite barrier, which is a key issue in the safety assessments of the KBS-3 concept.
Original languageEnglish
Pages (from-to)196-209
JournalJournal of Contaminant Hydrology
Volume102
Issue number3-4
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

Bentonite
reactive transport
bentonite
repository
Nuclear fuels
water chemistry
radioactive waste
modeling
porewater
safety
Radioactive Waste
Water
accessory mineral
Spent fuels
Accessories
backfill
Waste management
Radioactive wastes
Radioisotopes
waste management

Keywords

  • Bentonite
  • High-level nuclear waste repository
  • KBS-3
  • Reactive transport modelling

Cite this

Arcos, David ; Grandia, Fidel ; Domènech, Cristina ; Fernández, Ana M. ; Villar, María V. ; Muurinen, Arto ; Carlsson, Torbjörn ; Sellin, Patrik ; Hernán, Pedro. / Long-term geochemical evolution of the near field repository : Insights from reactive transport modelling and experimental evidences. In: Journal of Contaminant Hydrology. 2008 ; Vol. 102, No. 3-4. pp. 196-209.
@article{0cbcb30bc38347f68c5755774a567cc9,
title = "Long-term geochemical evolution of the near field repository: Insights from reactive transport modelling and experimental evidences",
abstract = "The KBS-3 underground nuclear waste repository concept designed by the Swedish Nuclear Fuel and Waste Management Co. (SKB) includes a bentonite buffer barrier surrounding the copper canisters and the iron insert where spent nuclear fuel will be placed. Bentonite is also part of the backfill material used to seal the access and deposition tunnels of the repository. The bentonite barrier has three main safety functions: to ensure the physical stability of the canister, to retard the intrusion of groundwater to the canisters, and in case of canister failure, to retard the migration of radionuclides to the geosphere. Laboratory experiments (< 10 years long) have provided evidence of the control exerted by accessory minerals and clay surfaces on the pore water chemistry. The evolution of the pore water chemistry will be a primordial factor on the long-term stability of the bentonite barrier, which is a key issue in the safety assessments of the KBS-3 concept.",
keywords = "Bentonite, High-level nuclear waste repository, KBS-3, Reactive transport modelling",
author = "David Arcos and Fidel Grandia and Cristina Dom{\`e}nech and Fern{\'a}ndez, {Ana M.} and Villar, {Mar{\'i}a V.} and Arto Muurinen and Torbj{\"o}rn Carlsson and Patrik Sellin and Pedro Hern{\'a}n",
year = "2008",
doi = "10.1016/j.jconhyd.2008.09.021",
language = "English",
volume = "102",
pages = "196--209",
journal = "Journal of Contaminant Hydrology",
issn = "0169-7722",
publisher = "Elsevier",
number = "3-4",

}

Arcos, D, Grandia, F, Domènech, C, Fernández, AM, Villar, MV, Muurinen, A, Carlsson, T, Sellin, P & Hernán, P 2008, 'Long-term geochemical evolution of the near field repository: Insights from reactive transport modelling and experimental evidences', Journal of Contaminant Hydrology, vol. 102, no. 3-4, pp. 196-209. https://doi.org/10.1016/j.jconhyd.2008.09.021

Long-term geochemical evolution of the near field repository : Insights from reactive transport modelling and experimental evidences. / Arcos, David (Corresponding Author); Grandia, Fidel; Domènech, Cristina; Fernández, Ana M.; Villar, María V.; Muurinen, Arto; Carlsson, Torbjörn; Sellin, Patrik; Hernán, Pedro.

In: Journal of Contaminant Hydrology, Vol. 102, No. 3-4, 2008, p. 196-209.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Long-term geochemical evolution of the near field repository

T2 - Insights from reactive transport modelling and experimental evidences

AU - Arcos, David

AU - Grandia, Fidel

AU - Domènech, Cristina

AU - Fernández, Ana M.

AU - Villar, María V.

AU - Muurinen, Arto

AU - Carlsson, Torbjörn

AU - Sellin, Patrik

AU - Hernán, Pedro

PY - 2008

Y1 - 2008

N2 - The KBS-3 underground nuclear waste repository concept designed by the Swedish Nuclear Fuel and Waste Management Co. (SKB) includes a bentonite buffer barrier surrounding the copper canisters and the iron insert where spent nuclear fuel will be placed. Bentonite is also part of the backfill material used to seal the access and deposition tunnels of the repository. The bentonite barrier has three main safety functions: to ensure the physical stability of the canister, to retard the intrusion of groundwater to the canisters, and in case of canister failure, to retard the migration of radionuclides to the geosphere. Laboratory experiments (< 10 years long) have provided evidence of the control exerted by accessory minerals and clay surfaces on the pore water chemistry. The evolution of the pore water chemistry will be a primordial factor on the long-term stability of the bentonite barrier, which is a key issue in the safety assessments of the KBS-3 concept.

AB - The KBS-3 underground nuclear waste repository concept designed by the Swedish Nuclear Fuel and Waste Management Co. (SKB) includes a bentonite buffer barrier surrounding the copper canisters and the iron insert where spent nuclear fuel will be placed. Bentonite is also part of the backfill material used to seal the access and deposition tunnels of the repository. The bentonite barrier has three main safety functions: to ensure the physical stability of the canister, to retard the intrusion of groundwater to the canisters, and in case of canister failure, to retard the migration of radionuclides to the geosphere. Laboratory experiments (< 10 years long) have provided evidence of the control exerted by accessory minerals and clay surfaces on the pore water chemistry. The evolution of the pore water chemistry will be a primordial factor on the long-term stability of the bentonite barrier, which is a key issue in the safety assessments of the KBS-3 concept.

KW - Bentonite

KW - High-level nuclear waste repository

KW - KBS-3

KW - Reactive transport modelling

U2 - 10.1016/j.jconhyd.2008.09.021

DO - 10.1016/j.jconhyd.2008.09.021

M3 - Article

VL - 102

SP - 196

EP - 209

JO - Journal of Contaminant Hydrology

JF - Journal of Contaminant Hydrology

SN - 0169-7722

IS - 3-4

ER -