Soil microorganisms determine the sorption of radionuclides within organic soil systems

The Influence of Soil Fungi on the Sorption of Cesium and Strontium in the Soil Organic Layer

“…6, June 2016 417 proportion of each element. Dighton et al (1991) estimated this study was similar to that used in a previous study [19]. In this study, fungal retention increased the amount of non- The aim of this study was to determine the contribution of microbial activity to the sorption of Cs and Sr into organic material, which is necessary for comparing nonsterile systems with sterile systems.…”

“…Water flushing removed more Cs than Sr. A previous study that investigated the extraction of Cs and Sr as radioactive isotopes, 137 Cs and 85 Sr also showed the same trend of result in both abiotic systems, followed by autoclaving and using a fungicide such as streptomycin [19]. In this study, we also used a different extractant, a mixed cation solution containing 1 mg/l of K + , Ca 2+ , and Mg 2+ , to determine the levels of exchangeable Cs + and Sr 2+ in the organic material for the abiotic and biotic systems.…”

Sorption coefficients and molecular mechanisms of Pu, U, Np, Am and Tc to Fe (hydr)oxides: A review

“…Also, this review focuses on the sorption percentage and distribution coefficient data of these radionuclides on FHOs under a variety of experimental conditions, rather than the SCM or other thermodynamic models [26]. Natural organic matters play a critical role in the biogeochemical mobility and cycling of trace metals and radionuclides including Pu, U, Np and Tc under subsurface conditions [27][28][29][30][31], because of their high fixation potential to metals/radionuclides and the amount available in most ecosystems. However, this interesting topic is beyond the scope of this article, the readers who are interested in the natural organic matters can refer to the cited references.…”

An overview of BORIS: Bioavailability of Radionuclides in Soils

“…Addition of clay minerals enhances radionuclide binding to soil in biotic systems, but binding increase is very low in abiotic systems. The presence of microorganisms may increase radionuclide binding by increasing the surface area for binding in the organic matrix and clay minerals and/or by depleting the medium of competing ions (Parekh et al, 2008).…”