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Mineralogical, physical and chemical investigation of compacted Kunigel V1 bentonite in contact with a steel heater in the ABM test package 1 experiment, Äspö laboratory, Sweden

Published online by Cambridge University Press:  02 January 2018

H. Sasamoto ,
T. Isogai ,
H. Kikuchi ,
H. Satoh  and
D. Svensson
H. Sasamoto*
Affiliation:
Japan Atomic Energy Agency, 432-2 Hokushin, Horonobe, Hokkaido 098-3224, Japan
T. Isogai
Affiliation:
Inspection Development Company Ltd., 3129-37 Muramatsu, Tokai, Ibaraki 319-1112, Japan
H. Kikuchi
Affiliation:
Inspection Development Company Ltd., 3129-37 Muramatsu, Tokai, Ibaraki 319-1112, Japan
H. Satoh
Affiliation:
Mitsubishi Materials Corporation, 1002-14 Mukoyama, Naka, Ibaraki 311-0102, Japan
D. Svensson
Affiliation:
Swedish Nuclear Fuel and Waste Management Co (SKB), Äspö Hard Rock Laboratory, Box 929, Oskarshamn SE-57229, Sweden
*
*E-mail: [email protected]
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Abstract

In many countries, compacted bentonite is a candidate engineering barrier material for safe disposal of high-level radioactive waste. The Swedish Nuclear Fuel and Waste Management Company (SKB) set up an in situ experiment (the ABM project) to compare the stability of different bentonites under the conditions of exposure to an iron source and to elevated temperature (up to 130°C) at the Äspö Hard Rock Laboratory, Sweden. Results for the Japanese bentonite (Kunigel V1) are summarized in the present study.

Mineralogical investigation using X-ray diffraction (XRD) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) suggested no transformation of smectite or neoformed clay phases. However, a distinct change in exchangeable cations of smectite was indicated (i.e. from Na type to Fe type and/or Ca type) in the bentonite in the vicinity of the steel heater.

Measurements of hydraulic conductivity and swelling properties suggest that no significant changes occurred in the bentonite even in the vicinity of the steel heater. This is attributed to the limited portion of the bentonite affected by the iron–bentonite interactions and the incomplete ion-exchange reactions. The methylene blue cation exchange capacity and the determination of the exchangeable cations showed that the lateral distribution for these parameters was constant. However, the total exchangeable cation population has changed significantly compared to the initial sample.

Keywords

BentoniteABM experimentsiron–bentonite interactionsion exchangealteration
Type
Research Article
Information
Clay Minerals , Volume 52 , Issue 1 , March 2017 , pp. 127 - 141
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2017

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References

Carlson, L., Karnland, O., Oversby, V.M., Rance, A., Smart, N., Snellman, M., Vähänen, M. & Werme, M. (2007) Experimental studies of the interactions between anaerobically corroding iron and bentonite. Physics and Chemistry of the Earth, 32, 334–345.CrossRefGoogle Scholar
Charlet, L. & Tournassat, C. (2005) Fe(II)-Na(I)-Ca(II) cation exchange on montmorillonite in chloride medium: Evidence for preferential clay adsorption of chloride-metal iron pairs in seawater. Aquatic Goochemistry, 11, 115–137.CrossRefGoogle Scholar
Charpentier, D., Devneau, K., Mosser-Ruck, R., Cathelineau, M. & Villiéras, F. (2006) Bentonite-iron interactions under alkaline condition: An experimental approach. Applied Clay Science, 32, 1–13.Google Scholar
Dohrmann, R. & Kaufhold, S. (2014) Cation exchange and mineral reactions observed in MX80 buffer samples of the prototype repository in situ experiment in Äspö, Sweden. Clays and Clay Minerals, 62, 357–373.Google Scholar
Dohrmann, R., Olsson, S., Kaufhold, S. & Sellin, P. (2013) Mineralogical investigations of the first package of the alternative buffer material test - II. Exchangeable cation population rearrangement. Clay Minerals, 48, 215–233.Google Scholar
Eng, A., Nilsson, U. & Svensson, D. (2007) Äspö Hard Rock Laboratory. Alternative Buffer Material. Installation Report, Swedish Nuclear Fuel and Waste Management Company International Progress Report, SKBIPR-07-15.Google Scholar
Géhin, A., Greneche, J.-M., Tournassat, C., Brendlé, J., Rancourt, D.G. & Charlet, L. (2007) Reversible surface- sorption-induced electron-transfer oxidation of Fe(II) at reactive site on a synthetic clay mineral. Geochimica et Cosmochimica Acta, 71, 863–876.Google Scholar
Guillaume, D., Neaman, A., Cathelineau, M., Mosser-Ruck, R., Peiffert, C., Abdelmoula, M., Dubessy, J., Villiéras, F. & Michau, N. (2004) Experimental study of the transformation of smectite at 80 and 300°C in the presence of Fe oxides. Clay Minerals, 39, 17–34.Google Scholar
Harnibrook, E.R.C. & Longstaffe, L.J. (1996) Berthierine from the lower cretaceous Clearwater formation, Alberta, Canada. Clays and Clay Minerals, 44, 1–21.Google Scholar
Ishidera, T., Ueno, K., Kurosawa, S. & Suyama, T. (2008) Investigation of montmorillonite alteration and form of iron corrosion products in compacted bentonite in contact with carbon steel for ten years. Physics and Chemistry of the Earth, 33, S269-S275.CrossRefGoogle Scholar
Ito, M., Okamoto, M., Shibata, M., Sasaki, Y., Danhara, T., Suzuki, K. & Watanabe, T. (1993) Mineralogical investigation of bentonite. Japan Nuclear Fuel Development Corporation Technical Report, PNC TN8430 93-003 (in Japanese).Google Scholar
JBAS (1977) Test method for cation exchange capacity, JBAS-106-77. Japan Bentonite Manufactures Association Standard (in Japanese).Google Scholar
JBAS (1991) Test method for adsorption capacity of methylene blue, JBAS-107-91. Japan Bentonite Manufactures Association Standard (in Japanese).Google Scholar
JIS (2000) Test method for bulk density of soils, JIS A 1225, Japan Industrial Standards Committee (in Japanese).Google Scholar
JNC (2000a) H1 2: Project to establish technical basis for HLW disposal in Japan, Project overview report. Japan Nuclear Fuel Development Corporation Technical Report, JNC TN1400 2000-001.Google Scholar
JNC (2000b) H1 2: Project to establish technical basis for HLW disposal in Japan, Supporting report 2: Repository design and engineering technology. Japan Nuclear Fuel Development Corporation Technical Report, JNC TN1400 2000-003.Google Scholar
Kaufhold, S. & Dohrmann, R. (2016) Distinguishing between more and less suitable bentonites for storage of high-level radioactive waste. Clay Minerals, 51, 289–302.CrossRefGoogle Scholar
Kaufhold, S., Dohrmann, R., Sandén, T., Sellin, P. & Svensson, D. (2013) Mineralogical investigations of the first package of the alternative buffer material test -I. Alteration of bentonites. Clay Minerals, 48, 199–213.CrossRefGoogle Scholar
Kaufhold, S., Hassel, A.W., Sanders, D. & Dohrmann, R. (2015) Fe corrosion in contact with bentonites. Journal of Hazardous Materials, 285, 464–473.Google Scholar
Kikuchi, H. & Tanai, K. (2004) Basic characteristic test of buffer/backfill material under Horonobe groundwater condition. Japan Nuclear Fuel Development Corporation Technical Report, JNC TN8430 2004-005 (in Japanese with English abstract).Google Scholar
Kikuchi, H., Tanai, K. & Yui, M. (2005) Database development of fundamental properties for the buffer material in Japan (available at: https://bufferdb.jaea.go.jp/bmdb/index_e.jsp). Proceedings of the International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL 2005), paper No.238.Google Scholar
Kumpulainen, S., Kiviranta, L. & Korkeakoski, P. (2016) Long-term effects of an iron heater and Äspö groundwater on smectite clays: Chemical and hydro-mechanical results from the in situ alternative buffer material (ABM) test package 2. Clay Minerals, 51, 129–144.Google Scholar
Lantenois, S., Lanson, B., Muller, F., Bauer, A., Jullien, M. & Plaçon, A. (2005) Experimental study of smecite interaction with metal Fe at low temperature: 1. Smectite destabilization. Clays and Clay Minerals, 53, 597–612.Google Scholar
MacEwan, D.M.C. & Wilson, M.J. (1980) Interlayer and intercalation complexes of clay minerals. Pp. 197–248 in: Crystal Structures of Clay Minerals and Their X-ray Identification (G.W. Brindley & G. Brown, editors). Monograph 5, Mineralogical Society, London.Google Scholar
Maeda, M., Tanai, K., Ito, M., Mihara, M. & Tanaka, M. (1998) Mechanical properties of the Ca exchanged and Ca bentonite — Swelling pressure, hydraulic conductivity, compressive strength and elastic modulus. Power Reactor and Nuclear Fuel Development Corporation Technical Report, PNC TN8410 98-021 (in Japanese with English abstract).Google Scholar
Manjanna, J. (2008) Preparation of F(II)-montmorillonite by reduction of Fe(III)-montmorillonite with ascorbic acid. Applied Clay Science, 42, 32–38.Google Scholar
Odin, G.S. (1990) Clay mineral formation at the continent-ocean boundary: The Verdine facies. Clay Minerals, 25, 477–483.CrossRefGoogle Scholar
Perronnet, M., Mlien, M., Villiéras, F., Raynal, J., Bonnin, D. & Bruno, G. (2008) Evidence of a critical content in Fe(0) on FoCa7 bentonite reactivity at 80°C. Applied Clay Science, 38, 187–202.Google Scholar
Sasamoto, H., Ishii, T., Satoh, H. & Sazarashi, M. (2010) Experimental study of alteration of bentonite coexisting iron material. Japan Atomic Energy Agency Technical Report, JAEA-Research 2010-030 (in Japanese with English abstract).Google Scholar
Sato, T., Watanabe, T. & Otuka, R. (1992) Effects of layer charge, charge location, and energy change of expansion properties of dioctahedral smectite. Clays and Clay Minerals, 40, 103–113.Google Scholar
Sellin, P. & Leupin, X.O. (2014) The use of clay as an engineered barrier in radioactive waste management -a review. Clays and Clay Minerals, 61, 477–498.Google Scholar
Svensson, D. (2015) The bentonite barrier. Swelling properties, redox chemistry and mineral evolution. Ph.D Thesis, Faculty of Engineering, Lund University, Sweden.Google Scholar
Svensson, D. & Hansen, S. (2013) Redox chemistry in two iron-bentonite field experiments at Äspö Hard Rock Laboratory, Sweden: An XRD and Fe K-edge XANES study. Clays and Clay Minerals, 61, 566–579.Google Scholar
Svensson, D., Dueck, A., Nilsson, U., Olsson, S., Sandén, T., Lydmark, S., Jägerwal, D., Pedersen, K. & Hansen, S. (2011) Alternative Buffer Material. Status of the ongoing laboratory investigation of reference materials and test package 1, Swedish Nuclear Fuel and Waste Management Company Technical Report, SKB TR-11-06.Google Scholar
Wallis, I., Idiart, A., Dohrmann, R. & Post, V. (2016) Reactive transport modelling of groundwater-benton-ite interaction: Effects on exchangeable cations in an alternative buffer material in-situ test. Applied Geochemistry, 73, 59–69.Google Scholar
Wersin, P., Jennie, A. & Mader, U.K. (2015) Interaction of corroding iron with bentonite in the ABM1 experiment at Äspö, Sweden: A microscopic approach. Clays and Clay Minerals, 63, 51–68.Google Scholar
Wilson, J., Cressey, G., Cressey, B., Cuadros, J., Ragnarsdottir, K.V., Savage, D. & Shibata, M. (2006) The effect of iron on montmorillonite stability (II) Experimental investigation. Geochimica et Cosmochimica Acta, 70, 323–336.Google Scholar