Sorption of radioiodide in an acidic, nutrient-poor boreal bog: insights into the microbial impact

Journal of Environmental Radioactivity
M LusaJ Lehto

Abstract

Batch sorption experiments were conducted to evaluate the sorption behaviour of iodide and the microbial impact on iodide sorption in the surface moss, subsurface peat, gyttja, and clay layers of a nutrient-poor boreal bog. The batch distribution coefficient (Kd) values of iodide decreased as a function of sampling depth. The highest Kd values, 4800 L/Kg dry weight (DW) (geometric mean), were observed in the fresh surface moss and the lowest in the bottom clay (geometric mean 90 mL/g DW). In the surface moss, peat and gyttja layers, which have a high organic matter content (on average 97%), maximum sorption was observed at a pH between ∼ 4 and 5 and in the clay layer at pH 2. The Kd values were significantly lower in sterilized samples, being 20-fold lower than the values found for the unsterilized samples. In addition, the recolonization of sterilized samples with a microbial population from the fresh samples restored the sorption capacity of surface moss, peat and gyttja samples, indicating that the decrease in the sorption was due to the destruction of microbes and supporting the hypothesis that microbes are necessary for the incorporation of iodide into the organic matter. Anoxic conditions reduced the sorption of iodide in...Continue Reading

References

Jul 1, 1988·Journal of General Microbiology·S LoprasertH Okada
Aug 4, 2001·Radiation and Environmental Biophysics·H Koch-Steindl, G Pröhl
Mar 13, 2003·Environmental Science & Technology·Maarten Nachtegaal, Donald L Sparks
Aug 14, 2003·Journal of Environmental Radioactivity·D J AshworthL Ciciani
Apr 6, 2004·Journal of Environmental Radioactivity·Yasuyuki MuramatsuYoichiro Ohmomo
Oct 21, 2006·Environmental Science & Technology·Johanna BuschmannLaura Sigg
Oct 16, 2007·Applied and Environmental Microbiology·Seigo AmachiTakaaki Fujii
Jul 22, 2008·Journal of Environmental Radioactivity·Noriko YamaguchiHajime Tanida
Sep 25, 2010·Journal of Colloid and Interface Science·Raul E MartinezAndreas Kappler
Oct 1, 2013·Journal of Environmental Radioactivity·Daniel I KaplanPeter H Santschi
Jan 24, 2014·TheScientificWorldJournal·Neelam Bansal, Shamsher S Kanwar
Dec 3, 2014·Journal of Environmental Radioactivity·Chen XuPeter H Santschi

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