Technetium reduction and reoxidation behaviour in Dounreay soils

Radiochimica Acta

Volumn 96, Issue 9-11, 2008, Pages 631-636

  Begg, J D C ^a   Burke, I T ^a   Charnock, J M ^b   Morris, K ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

^b UNIVERSITY OF MANCHESTER   (United Kingdom)

Author keywords

Biogeochemistry; Reoxidation; Technetium; X ray absorption spectroscopy

Indexed keywords

EID: 56649102094     PISSN: 00338230     EISSN: None     Source Type: Journal    
DOI: 10.1524/ract.2008.1547     Document Type: Conference Paper

References (22)

1. Bondietti, E. A., Francis, C. W.: Geologic migration potentials of technetium-99 and neptunium-237. Science 203, 1337 (1979).
2. Lloyd, J. R., Sole, V. A., van Praagh, C. V. G., Lovley, D. R.: Direct and Fe(II)-mediated reduction of technetium by Fe(III)-reducing bacteria. Appl. Environ. Microbiol. 66, 3743 (2000).
3. Lloyd, J. R., Renshaw, J. C.: Bioremediation of radioactive waste: radionuclide-microbe interactions in laboratory and field-scale studies. Curr. Opin. Biotechnol. 16, 254 (2005).
4. - by sediment-associated biogenic Fe(II). Geochim. Cosmochim. Acta 68, 3171 (2004).
5. Istok, J. D., Senko, J. M., Krumholz, L. R., Watson, D., Bogle, M. A., Peacock, A., Chang, Y. J., White, D. C.: In situ bioreduction of technetium and uranium in a nitrate-contaminated aquifer. Environ. Sci. Technol. 38, 468 (2004).
6. Wildung, R. E., Li, S. W., Murray, C. J., Krupka, K. M., Xie, Y., Hess, N. J., Roden, E. E.: Technetium reduction in sediments of a shallow aquifer exhibiting dissimilatory iron reduction potential. FEMS Microbiol. Ecol. 49, 151 (2004).
7. Burke, I., T., Boothman, C., Lloyd, J. R., Mortimer, R. J. G., Livens, F. R., Morris, K.: Effects of progressive anoxia on the solubility of technetium in sediments. Environ. Sci. Technol. 39, 4109 (2005).
8. Michalsen, M. M., Goodman, B. A., Kelly, S. D., Kemner, K. M., McKinley, J. P., Stucki, J. W., Istok, J. D.: Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier. Environ. Sci. Technol. 40, 7048 (2006).
9. Begg, J. D. C., Burke, I. T., Morris, K.: The behaviour of technetium during microbial reduction in amended soils from Dounreay, UK. Sci. Total Environ. 373, 297 (2007).
10. McBeth, J. M., Lear, G., Lloyd, J. R., Livens, F. R., Morris, K., Burke, I. T.: Technetium reduction and reoxidation in aquifer sediments. Geomicrobiol. J. 24, 189 (2007).
11. Burke, L. T., Boothman, C., Lloyd, J. R., Livens, F. R., Charnock, J. M., McBeth, J. M., Mortimer, R. J. G., Morris, K.: Reoxidation behavior of technetium, iron, and sulfur in estuarine sediments. Environ. Sci. Technol. 40, 3529 (2006).
12. Morris, K., Livens, F. R., Charnock, J. M., Burke, I. T., McBeth, J. M., Begg, J. D. C., Boothman, C., Lloyd, J. R.: An X-ray absorption study of the fate of technetium in reduced and reoxidized sediments and mineral phases. Appl. Geochem. 26, 603 (2008).
13. Lovley, D. R., Phillips, E. J. P.: Availability of ferric iron for microbial reduction in bottom sediments of the freshwater tidal Potomac River. Appl. Environ. Microbiol. 52, 751 (1986).
14. Almahamid, I., Bryan, J. C., Bucher, J. J., Burrell, A. K., Edelstein, N. M., Hudson, E. A., Kaltsoyannis, N., Lukens, W. W., Shuh, D. K., Nitsche, H., Reich, T.: Electronic and structural investigations of technetium compounds by X-ray absorption spectroscopy. Inorg. Chem. 34, 193 (1995).
15. Wharton, M. J., Atkins, B., Charnock, J. M., Livens, F. R., Pattrick, R. A. D., Collison, D.: An X-ray absorption spectroscopy study of the coprecipitation of Tc and Re with mackinawite (FeS). Appl. Geochem. 15, 347 (2000).
16. Maset, E. R., Sidhu, S. H., Fisher, A., Heydon, A., Worsfold, P. J., Cartwright, A. J., Keith-Roach, M. J.: Effect of organic co-contaminants on technetium and rhenium speciation and solubility under reducing conditions. Environ. Sci. Technol. 40, 5472 (2006).
17. Zachara, J. M., Heald, S. M., Jeon, B.-H., Kukkadapu, R. K., Liu, C., McKinley, J. P., Dohnalkova, A. C., Moore, D. A.: Reduction of pertechnetate [Tc(VII)] by aqueous Fe(II) and the nature of solid phase redox products. Geochim. Cosmochim. Acta 71, 2137 (2007).
18. Cui, D., Eriksen, T. E.: Reduction of pertechnetate in solution by heterogeneous electron transfer from Fe(II)-containing geological material. Environ. Sci. Technol. 30, 2263 (1996).
19. Livens, F. R., Jones, M. J., Hynes, A. J., Charnock, J. M., Mosselmans, J. F. W., Hennig, C. Steele, H., Collison, D., Vaughan, D. J., Pattrick, R. A. D., Reed, W. A., Moyes, L. N.: X-ray absorption spectroscopy studies of reactions of technetium, uranium and neptunium with mackinawite. J. Environ. Radioact. 74, 211 (2004).
20. Pepper, S. E., Bunker, D. J., Bryan, N. D., Livens, F. R., Charnock, J. M., Pattrick, R. A., Collison, D.: Treatment of radioactive wastes: An X-ray absorption spectroscopy study of the reaction of technetium with green rust. J. Colloid Interface Sci. 268, 408 (2003).
21. Weber, K. A., Picardal, F. W., Roden, E. E.: Microbially catalyzed nitrate-dependent oxidation of biogenic solid-phase Fe(II) compounds. Environ. Sci. Technol. 35, 1644 (2001).
22. Wilkins, M. J., Livens, F. R., Vaughan, D. J., Beadle, I., Lloyd, J. R.: The influence of microbial redox cycling on radionuclide mobility in the subsurface at a low-level radioactive waste storage site. Geobiology 5, 293 (2007).