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Eighteen years of steel–bentonite interaction in the FEBEX in situ test at the Grimsel Test Site in Switzerland

  • Jebril HadiEmail author
  • Paul Wersin
  • Vincent Serneels
  • Jean-Marc Greneche
Article
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ABSTRACT

Corrosion of steel canisters containing buried high-level radioactive waste is a relevant issue for the long-term integrity of repositories. The purpose of the present study was to evaluate this issue by examining two differently corroded blocks originating from a full-scale in situ test of the FEBEX bentonite site in Switzerland. The FEBEX experiment was designed initially as a feasibility test of an engineered clay barrier system and was recently dismantled after 18 years of activity. Samples were studied by ‘spatially resolved’ and ‘bulk’ experimental methods, including Scanning Electron Microscopy, Elemental Energy Dispersive Spectroscopy (SEM-EDX), μ-Raman spectroscopy, X-ray Fluorescence (XRF), X-ray Diffraction (XRD), and 57Fe Mössbauer spectrometry, with a focus on Fe-bearing phases. In one of the blocks, corrosion of the steel liner led to diffusion of Fe into the bentonite, resulting in the formation of large (width > 140 mm) red, orange, and blue colored halos. Goethite was identified as the main corrosion product in the red and orange zones while no excess Fe2+ (compared to the unaffected bentonite) was observed there. Excess Fe2+ was found to have diffused further into the clay (in the blue zones) but its speciation could not be unambiguously clarified. The results indicate the occurrence of newly formed octahedral Fe2+ either as Fe2+ sorbed on the clay or as structural Fe2+ inside the clay (following electron transfer from sorbed Fe2+). No other indications of clay transformation or newly formed clay phases were found. The overall pattern indicates that diffusion of Fe was initiated when oxidizing conditions were still prevailing inside the bentonite block, resulting in the accumulation of Fe3+ close to the interface (up to three times the original Fe content), and continued when reducing conditions were reached, allowing deeper diffusion of Fe2+ into the clay (inducing an increase of 10–12% of the Fe content).

Keywords

Bentonite Corrosion Engineered Clay Barrier Fe Diffusion FEBEX Experiment Grimsel Test Site Steel Liner 

Notes

ACKNOWLEDGMENTS

The authors thank Thomas Siegenthaler and Thomas Aebi for sample preparation. Andreas Jenni, Urs Mäder (University of Bern), and Florian Kober (Nagra) are acknowledged for fruitful discussions. The authors are grateful also to the three anonymous reviewers and the editorial team for careful handling of this manuscript. This work was partially supported by Nagra.

Supplementary material

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References

  1. Ackermann, F. (1980) A procedure for correcting the grain size effect in heavy metal analyses of estuarine and coastal sediments. Environmental Technology Letters, 1, 518–527.CrossRefGoogle Scholar
  2. ANDRA (2005) ANDRA research on the geological disposal of high-level long-lived radioactive waste. Report Series, Dossier 2005, ANDRA, Paris, France, 40 pp. https://www.andra.fr/download/andra-international-en/document/editions/265.pdf
  3. Ayari, F., Srasra, E., and Trabelsi-Ayadi, M. (2007) Effect of exchangeable cations on the physicochemical properties of smectite. Surface Engineering and Applied Electrochemistry, 43, 369–378.CrossRefGoogle Scholar
  4. Bradbury, M., Berner, U., Curti, E., Hummel, W., Kosakowski, G., and Thoenen, T. (2014) The long term geochemical evolution of the nearfield of the HLW repository. Nagra Technical Reports, TR 12-01, Nagra, Villingen, Switzerland, 174 pp. https://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NTBs%202001-2010/e_ntb12-01.pdf
  5. Carlson, L., Karnland, O., Oversby, V.M., Rance, A.P., Smart, N.R., Snellman, M., Vahanen, M., and Werme, L.O. (2007) Experimental studies of the interactions between anaerobically corroding iron and bentonite. Physics and Chemistry of the Earth, 32, 334–345.CrossRefGoogle Scholar
  6. Eng, A.N.U. and Svensson, D. (2007) Äspö Hard Rock Laboratory - Alternative Buffer Material - Installation report. International Progress Report, IPR-07-15, SKB, Stockholm, Sweden, 67 pp. http://skb.se/upload/publications/pdf/ipr-07-15.pdf
  7. Fernandez, A.M., Baeyens, B., Bradbury, M., and Rivas, P. (2004) Analysis of the porewater chemical composition of a Spanish compacted bentonite used in an engineered barrier. Physics and Chemistry of the Earth, 29, 105–118.CrossRefGoogle Scholar
  8. Fuentes-Cantillana, J.L. and García-Siñeriz, J.L. (1998) FEBEX Full-scale engineered barriers experiment in crystalline host rock. Final design and installation of the “in situ” test at Grimsel. ENRESA Publicación Técnica, 12/98, ENRESA, Madrid, Spain, 182 pp. www.iaea.org/inis/collection/NCLCollectionStore/_Public/30/022/30022753.pdf
  9. Fuentes-Cantillana, J.L., García-Siñeriz, J.L., Obis, J., Pérez, A., Alberdi, J., Barcala, J.M., Campos, R., Cuevas, J., Fernández, A.M., Gamero, E., García, M., Gómez, P., Hernández, A., Illera, A., Martín, P.L., Melón, A.M., Mingarro, M., Ortuno, F., Pardillo, J., Pelayo, M., Rivas, P., Rodríguez, V., Turrero, M.J., Villar, M.V., Caballero, E., Jiménez de Cisneros, C., Linares, J., Martínez, M.A., Samper, J., Delgado, J., Juncosa, R., Molinero, J., Alonso, E., Carrera, J., Gens, A., García-Molina, A.J., Guimera, J., Guimaraes, L.d.N., Lloret, A., Martínez, L., Elorza, F.J., Borregón, J.L., Fariña, P., and Farias, J. (1998) FEBEX Full-scale engineered barriers experiment in crystalline host rock. pre-operational stage summary report. ENRESA Publicación Técnica, 1/98, ENRESA, Madrid, Spain, 390 pp.Google Scholar
  10. Fuentes-Cantillana, J.L., García-Siñeriz, J.L., Franco, J.J., Obis, J., Pérez, A., Jullien, F., Alberdi, J., Barcala, J.M., Campos, R., Cuevas, J., Fernández, A.M., Gamero, E., García, M., Gómez, P., Hernández, A., Illera, A., Martín, P.L., Melón, A.M., Missana, T., Ortuno, F., Pardillo, J., Rivas, P., Turrero, M.J., Villar, M.V., Mingarro, M., Pelayo, M., Caballero, E., Cuadros, J., Huertas, F., Huertas, F.J., Jiménez de Cisneros, C., Linares, J., Bazargan-Sabet, B., Ghoreychi, M., Jockwer, N., Wieczorek, K., Kickmaier, W., Marschall, P., Martínez, M.A., Carretero, P., Dai, Z., Delgado, J., Juncosa, R., Molinero, J., Ruiz, A., Samper, J., Vázquez, A., Alonso, E., Carrera, J., Gens, A., García-Molina, A.J., Guimera, J., Guimaraes, L.d.N., Lloret, A., Martínez, L., Olivella, S., Pintado, X., Sánchez, M., Elorza, F.J., Borregón, J.L., Canamon, I., Rodriguez Pons-Esparver, R., Fariña, P., Farias, J., and Huertas, F. (2000) FEBEX project: full-scale engineered barriers experiment for a deep geological repository for high level radioactive waste in crystalline host rock. Final report ENRESA Publicación Técnica, 1/2000, ENRESA, Madrid, Spain, 367 pp. http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/31/033/31033797.pdf
  11. Gates, W.P. (2005) Infrared spectroscopy and the chemistry of dioctahedral smectites. Pp. 126–168 in: The Application of Vibrational Spectroscopy to Clay Minerals and Layered Double Hydroxides (J.T. Kloprogge, editor), 13, The Clay Minerals Society, Aurora, Colorado, USA.Google Scholar
  12. Gaudin, A., Gaboreau, S., Tinseau, E., Bartier, D., Petit, S., Grauby, O., Foct, F., and Beaufort, D. (2009) Mineralogical reactions in the Tournemire argillite after in-situ interaction with steels. Applied Clay Science, 43, 196–207.CrossRefGoogle Scholar
  13. Gehin, A., Greneche, J.M., Tournassat, C., Brendle, J., Rancourt, D.G., and Charlet, L. (2007) Reversible surface-sorption-induced electron-transfer oxidation of Fe(II) at reactive sites on a synthetic clay mineral. Geochimica et Cosmochimica Acta, 71, 863–876.CrossRefGoogle Scholar
  14. Grim, R.E. and Kulbicki, G. (1961) Montmorillonite: high temperature reactions and classification. American Mineralogist, 46, 1329–1369.Google Scholar
  15. Gütlich, P., Bill, E., and Trautwein, A.X. (2011) Mössbauer Spectroscopy and Transition Metal Chemistry. Springer-Verlag, Berlin Heidelberg, Germany.Google Scholar
  16. Hadi, J., Wersin, P., Jenni, A., and Greneche, J.M. (2017) Redox evolution and Fe-bentonite interaction in the ABM2 experiment, Äspö Hard Rock Laboratory. Nagra Technischer Bericht, NAB 17-10, Nagra, Wettingen, Switzerland, 304 pp. https://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NTBs%202014%20-%202015/e_ntb17-10.pdf
  17. Handler, R.M., Frierdich, A.J., Johnson, C.M., Rosso, K.M., Beard, B.L., Wang, C., Latta, D.E., Neumann, A., Pasakarnis, T., and Premaratne, W.A.P.J. (2014) Fe(II)-Catalyzed recrystallization of goethite revisited. Environmental Science & Technology, 48, 11302–11311.CrossRefGoogle Scholar
  18. Huertas, F., Farinia, P., Farias, J., Garcia-Sineriz, J.L., Villar, M.V., Fernandez, A.M., Martin, P.L., Elorza, F.J., Gens, A., Sanchez, M., Lloret, A., Samper, J., and Martinez, M.A. (2006) Full-scale engineered barriers experiment. Updated final report 1994–2004. ENRESA Publicación Técnica, 05–0/2006, ENRESA, Madrid, Spain, 590 pp.Google Scholar
  19. Karnland, O., Olsson, S., Dueck, A., Birgersson, M., Nilsson, U., and Hernan-Hakansson, T. (2009) Long term test of buffer material at the Äspö Hard Rock Laboratory, LOT project. Final report on the A2 test parcel. SKB Technical Report, TR-09-29, SKB, Stockholm, Sweden, 279 pp. http://www.skb.se/upload/publications/pdf/TR-09-29.pdf
  20. Kaufhold, S., Hassel, A.W., Sanders, D., and Dohrmann, R. (2015) Corrosion of high-level radioactive waste iron-canisters in contact with bentonite. Journal of Hazardous Materials, 285, 464–473.CrossRefGoogle Scholar
  21. Kerisit, S., Zarzycki, P., and Rosso, K.M. (2015) Computational Molecular Simulation of the Oxidative Adsorption of Ferrous Iron at the Hematite (001)–Water Interface. The Journal of Physical Chemistry C, 119, 9242–9252.CrossRefGoogle Scholar
  22. Kober, F., Giroud, N., Uyama, M., Hitomi, T., Hayagane, S., Kadota, N., Saito, H., Okamoto, S., Aoshima, K., Osawa, M., Hadi, J., Grenèche, J.M., Wersin, P., Svensson, D., Lundgren, C., Kaufhold, S., Dohrmann, R., Ufer, K., Torres, E., Turrero, M.J., Sánchez, L., Garralón, A., Gómez, P., Campos, R., Leal Olloqui, M., Scott, T.B., and Madina, V. (2017) FEBEX-DP. Metal Corrosion and Iron-Bentonite Interaction Studies. Nagra Arbeitsbericht, NAB 16–16, Nagra, Wettingen, Switzerland, 300 pp. http://www.grimsel.com/febex-dp-generalfiles/351-nab-16-016-metal-corrosion-and-iron-bentonite-interaction-studies-1
  23. Kober, F., Giroud, N., Uyama, M., Hitomi, T., Hayagane, S., Kadota, N., Saito, H., Okamoto, S., Aoshima, K., Osawa, M., Hadi, J., Grenèche, J.M., Wersin, P., Svensson, D., Lundgren, C., Kaufhold, S., Dohrmann, R., Ufer, K., Torres, E., Turrero, M.J., Sánchez, L., Garralón, A., Gómez, P., Campos, R., Leal Olloqui, M., Scott, T.B., and Madina, V. (2017) FEBEX-DP. Metal Corrosion and Iron-Bentonite Interaction Studies. Nagra Arbeitsbericht, NAB 16–16, Nagra, Wettingen, Switzerland, 300 pp. http://www.grimsel.com/febex-dp-general-files/351-nab-16-016-metal-corrosion-and-iron-bentonite-interaction-studies-1
  24. Komadel, P., Madejová, J., and Stucki, J.W. (2006) Structural Fe(III) reduction in smectites. Applied Clay Science, 34, 88–94.CrossRefGoogle Scholar
  25. Lábár, J.L. and Török, S. (1992) A peak-to-background method for electron probe X-ray micro-analysis applied to individual small particles. X-Ray Spectrometry, 21, 183–190.CrossRefGoogle Scholar
  26. Lafuente, B., Drowns, R.T., Yang, H., and Stone, N. (2015) The power of databases: the RRUFF project. Pp. 1–30 in: Highlights in Mineralogical Chrystallography (T. Armbruster and R.M. Danisi, editors). De Gruyter, Berlin, Germany.Google Scholar
  27. Lantenois, S., Lanson, B., Muller, F., Bauer, A., Jullien, M., and Plançon, A. (2005) Experimental study of smectite interaction with metal Fe at low temperature: 1. Smectite destabilization. Clays and Clay Minerals, 53, 597–612.CrossRefGoogle Scholar
  28. Lanyon, G.W. and Gaus, I. (2017) Main outcomes and review of the FEBEX In Situ Test (GTS) and Mock-up after 15 years of operation. Nagra Technischer Bericht, NTB 15–04, Nagra, Wettingen, Switzerland, 127 pp. https://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NTBs%202014%20-%202015/e_ntb15-04.pdf
  29. Latta, D.E., Neumann, A., Premaratne, W.A.P.J., and Scherer, M.M. (2017) Fe(II)–Fe(III) Electron Transfer in a Clay Mineral with Low Fe Content. ACS Earth and Space Chemistry, 1, 197–208.CrossRefGoogle Scholar
  30. Leal Olloqui, M. and Scott, T.B. (2017) Study of the University of Bristol. Pp. 158–187 in: FEBEX-DP. Metal Corrosion and Iron-Bentonite Interaction Studies (P. Wersin and F. Kober, editors). NAB 16–016, Nagra, Wettingen, Switzerland.Google Scholar
  31. Luoma, S.N. (1990) Processes affecting metal concentrations in estuarine and coastal marine sediments. Pp. 51–66 in: Heavy Metals in Marine Environment (R.W. Furness and P.S. Rainbow, editors). CRC Press Inc., Boca Raton, Florida, USA.Google Scholar
  32. Madina, V. (2016) Corrosion Study of FEBEX DP Components. Nagra Arbeitsbericht, NAB 16–054, Nagra, Wettingen, Switzerland, 107 pp. http://www.grimsel.com/febex-dp-general-files/356-nab-16-054-corrosion-study-of-febex-dp-components-1
  33. Martín, P.L., Barcala, J.M., and García-Gutiérrez, M. (2006) Thermo-hydro-mechanical Instrumentation in a Long-term Large-scale Buffer Material Test: Mock-up Experiment at CIEMAT. Pp. 577–584 in: proceedings of 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics, Cardiff, United Kingdom, 2006, Thomas Telford Pub.Google Scholar
  34. Martin, F.A., Bataillon, C., and Schlegel, M.L. (2008) Corrosion of iron and low alloyed steel within a water saturated brick of clay under anaerobic deep geological disposal conditions: An integrated experiment. Journal of Nuclear Materials, 379, 80–90.CrossRefGoogle Scholar
  35. Marty, N.C.M., Fritz, B., Clement, A., and Michau, N. (2010) Modelling the long term alteration of the engineered bentonite barrier in an underground radioactive waste repository. Applied Clay Science, 47, 82–90.CrossRefGoogle Scholar
  36. Mössbauer, R.L. (1958) Kernresonanzabsorption von Gammastrahlung in Ir191. Naturwissenschaften, 45, 538–539.CrossRefGoogle Scholar
  37. Mosser-Ruck, R., Cathelineau, M., Guillaume, D., Charpentier, D., Rousset, D., Barres, O., and Michau, N. (2010) Effects of temperature, pH, and iron/clay and liquid/clay ratios on experimental conversion of dioctahedral smectite to berthierine, chlorite, vermiculite, or saponite. Clays and Clay Minerals, 58, 280–291.CrossRefGoogle Scholar
  38. Murad, E. and Cashion, J.D. (2004) Mössbauer Spectroscopy of Environmental Materials and their Industrial Utilization. Kluwer Academic Publishers, Dordrecht, Netherlands.Google Scholar
  39. Muurinen, A., Tournassat, C., Hadi, J., and Greneche, J.M. (2014) Sorption and diffusion of Fe(II) in bentonite. Posiva Working Reports, WR-2014-04, Posiva, Olkiluoto, Finland, 84 pp. http://www.posiva.fi/files/3772/WR_2014-04.pdf
  40. Nagra (2002) Project Opalinus Clay: Safety report. Demonstration of disposal feasibility for spent fuel, vitrified high-level waste and long-lived intermediate-level waste (Entsorgungsnachweis). Nagra Technischer Bericht, NTB 02–05, Nagra, Wettingen, Switzerland, 24 pp. http://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NTBs%202001-2010/e_ntb02-05.pdf
  41. Papillon, F., Jullien, M., and Bataillon, C. (2003) Carbon steel behaviour in compacted clay: two long-term tests for corrosion prediction. Pp. 439–454 in: proceedings of Prediction of Long Term Corrosion Behaviour in Nuclear Waste Systems (International Workshop), Maney Publishing, Cadarache, France, 2002.Google Scholar
  42. Perronnet, M., Jullien, M., Villieras, F., Raynal, J., Bonnin, D., and Bruno, G. (2008) Evidence of a critical content in Fe(0) on FoCa7 bentonite reactivity at 80 degrees C. Applied Clay Science, 38, 187–202.CrossRefGoogle Scholar
  43. Posiva (2012) Safety case for the disposal of spent nuclear fuel at Olkiluoto - Synthesis 2012 Posiva Reports, 2012–12, Posiva, Olkiluoto, Finland, 324 pp. http://www.posiva.fi/files/2987/Posiva_2012-12web.pdf
  44. Rosso, K.M., Yanina, S.V., Gorski, C.A., Larese-Casanova, P., and Scherer, M.M. (2010) Connecting observations of hematite (alpha-Fe2O3) growth catalyzed by Fe(II). Environmental Science & Technology, 44, 61–67.CrossRefGoogle Scholar
  45. Schaefer, M.V., Gorski, C.A., and Scherer, M.M. (2011) Spectroscopic evidence for interfacial Fe(II)-Fe(III) electron transfer in a clay mineral. Environmental Science & Technology, 45, 540–545.CrossRefGoogle Scholar
  46. Schlegel, M.L., Bataillon, C., Blanc, C., Pret, D., and Foy, E. (2010) Anodic activation of iron corrosion in clay media under water-saturated conditions at 90 degrees C: characterization of the corrosion interface. Environmental Science & Technology, 44, 1503–1508.Google Scholar
  47. Schlegel, M.L., Bataillon, C., Brucker, F., Blanc, C., Pret, D., Foy, E., and Chorro, M. (2014) Corrosion of metal iron in contact with anoxic clay at 90 degrees C: Characterization of the corrosion products after two years of interaction. Applied Geochemistry, 51, 1–14.CrossRefGoogle Scholar
  48. SKB (2011) Long-term safety for the final repository for spent nuclear fuel at Forsmark. Main report of the SR-Site project. Volume II. SKB Tecnical Reports, TR-11-01, SKB, Stockholm, Sweden, 278 pp. http://skb.se/upload/publications/pdf/TR-11-01_vol2.pdf
  49. Soltermann, D., Fernandes, M.M., Baeyens, B., Dahn, R., Miehe-Brendle, J., Wehrli, B., and Bradbury, M.H. (2013) Fe(II) sorption on a synthetic montmorillonite. A combined macroscopic and spectroscopic study. Environmental Science & Technology, 47, 6978–6986.CrossRefGoogle Scholar
  50. Soltermann, D., Fernandes, M.M., Baeyens, B., Dahn, R., Joshi, P.A., Scheinost, A.C., and Gorski, C.A. (2014) Fe(II) uptake on natural montmorillonites. I. Macroscopic and spectroscopic characterization. Environmental Science & Technology, 48, 8688–8697.CrossRefGoogle Scholar
  51. Stucki, J.M. (2006) Properties and behaviour of iron in clay minerals. Pp. 423-476 in: Handbook of Clay Science (F. Bergaya, B.K.G. Theng, and G. Lagaly, editors). Elsevier, Amsterdam, Netherlands.Google Scholar
  52. Svensson, P.D. and 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.CrossRefGoogle Scholar
  53. Svensson, D., Dueck, A., Nilsson, U., Olsson, S., Sandén, T., Lydmark, S., Jägerwall, S., Pedersen, K., and Hansen, S. (2011) Alternative buffer material - Status of the ongoing laboratory investigation of reference materials and test package 1. SKB Technical Reports, SKB TR-11-06, SKB, Stockholm, Sweden, 140 pp. http://www.skb.se/upload/publications/pdf/TR-11-06.pdf
  54. Trincavelli, J., Limandri, S., and Bonetto, R. (2014) Standardless quantification methods in electron probe microanalysis. Spectrochimica Acta Part B: Atomic Spectroscopy, 101, 76–85.CrossRefGoogle Scholar
  55. Tzara, C. (1961) Diffusion des photons sur les atomes et les noyaux dans les cristaux. Journal de Physique et Le Radium, 22, 303–307.CrossRefGoogle Scholar
  56. Uyama, M., Hitomi, T., Hayagane, S., Kadota, N., Saito, H., Okamoto, S., Aoshima, K., and Osawa, M. (2017) Metal corrosion analysis by Obayashi. Pp. 29–51 in: FEBEX-DP. Metal Corrosion and Iron-Bentonite Interaction Studies (P. Wersin and F. Kober, editors). NAB 16–016, Nagra, Wettingen, Switzerland.Google Scholar
  57. Vandenberghe, R. and De Grave, E. (2013) Application of Mössbauer Spectroscopy in Earth Sciences. Pp. 91–185 in: Mössbauer Spectroscopy - Tutorial book (Y. Yoshida and G. Langouche, editors). Springer-Verlag, Berlin Heidelberg, Germany.Google Scholar
  58. Villar, M.V., Fernández, A.M., Rivas, P., Lloret, A., Daucausse, D., Montarges-Pelletier, E., Devineau, K., Villieras, F., Hynková, E., Cechova, Z., Montenegro, L., Samper, J., Zheng, L., Robinet, J.C., Muurinen, A., Weber, H.P., Börgesson, L., Sandén, T., and Verstricht, J. (2006) FEBEX Project final report - Post-mortem bentonite analysis. ENRESA Publicación Técnica, 05–1/2006, ENRESA, Madrid, Spain, 200 pp.Google Scholar
  59. Villar, M.V., Iglesias, R.J., Abós, H., Martínez, V., de la Rosa, C., and Manchón, M.A. (2016) FEBEX-DP on-site analyses report. Nagra Arbeitsbericht, NAB 16–12, Nagra, Wettingen, Switzerland, 115 pp. http://www.grimsel.com/febex-dp-general-files/349-nab-16-012-febex-dp-on-site-analyses-report
  60. Villar, M.V., Fernández, A.M., Romero, E., Dueck, A., Cuevas, J., Plötze, M., Kaufhold, S., Dohrmann, R., Iglesias, R.J., Sakaki, T., Zheng, L., Kawamoto, K., and Kober, F. (2017) FEBEX DP Post mortem THM THG Analysis Report. Nagra Arbeitsbericht, NAB 16–17, Nagra, Wettingen, Switzerland, 187 pp. https://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NABs%202004%20-%202015/e_nab16-017.pdf
  61. Wersin, P., Johnson, L., and Schwyn, B. (2004) Assessment of redox conditions in the near field of nuclear waste repositories: Application to the Swiss high-level and intermediate level waste disposal concept. Pp. 539–544 in: Proceedings of Scientific Basis for Nuclear Waste Management XXVII, Kalmar, Sweden, 2003, Materials Research Society.Google Scholar
  62. Wersin, P., Birgersson, M., Olsson, S., Karnland, O., and Snellman, M. (2008) Impact of corrosion-derived iron on the bentonite buffer within the KBS-3H disposal concept - the Olkiluoto site as case study. Posiva Reports, 2007–11, Posiva, Olkiluoto, Finland, 58 pp. http://www.posiva.fi/files/807/POSIVA2007-11web_16.2.09.pdf
  63. Wersin, P., Jenni, A., and Mäder, 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.CrossRefGoogle Scholar
  64. Wilson, J.C., Benbow, S., Sasamoto, H., Savage, D., and Watson, C. (2015) Thermodynamic and fully-coupled reactive transport models of a steel-bentonite interface. Applied Geochemistry, 61, 10–28.CrossRefGoogle Scholar
  65. Xia, X., Idemitsu, K., Arima, T., Inagaki, Y., Ishidera, T., Kurosawa, S., Iijima, K., and Sato, H. (2005) Corrosion of carbon steel in compacted bentonite and its effect on neptunium diffusion under reducing condition. Applied Clay Science, 28, 89–100.CrossRefGoogle Scholar
  66. Yanina, S.V. and Rosso, K.M. (2008) Linked reactivity at mineral-water interfaces through bulk crystal conduction. Science, 320, 218–222.CrossRefGoogle Scholar

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© The Clay Minerals Society 2019

Authors and Affiliations

  • Jebril Hadi
    • 1
    Email author
  • Paul Wersin
    • 1
  • Vincent Serneels
    • 2
  • Jean-Marc Greneche
    • 3
  1. 1.Institute of Geological SciencesUniversity of BernBernSwitzerland
  2. 2.Département de GéoscienceUniversité de FribourgFribourgSwitzerland
  3. 3.Institut des Molécules et des Matériaux du Mans (IMMM), UMR CNRS 6283Université du MaineLe MansFrance

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