Effect of natural clay components on sorption of Cs, Pu and Am by the clay

Sorption of radionuclides and metals to graphene oxide and magnetic graphene oxide

“…The obtained K d values (from 0.9 9 10 -3 to 10 9 10 -3 ml g -1 ) were in the same range as reported for natural clay samples [26,27]. The analysis of data from three sets of experiments was performed using SigmaPlot 13.0 to calculate variation in the uptake of studied elements by three adsorbents (Figs.…”

“…All solutions were prepared using deionized (Elix, Milipore) or Milli-Q(Millipore Milli-Q Synthesis A-10) water. Details of sorption experiments are reported in previous publications[26,27].…”

Radioactivity, Geochemistry, and Health

“…Moreover, both clay and granite-based repository concepts implement a backfill of bentonite, a type of montmorillonite. For these reasons, many studies have evaluated actinide sorption onto clay minerals including montmorillonite (e.g., Bachmaf and Merkel, 2011;Bertetti et al, 1998;Chisholm-Brause et al, 1992Kowal-Fouchard et al, 2004;Lujaniene et al, 2007;McKinley et al, 1995;Pabalan and Turner, 1997;Pabalan et al, 1998;Stumpf et al, 2004;Tsunashima et al, 1981;Turner et al, 1998); illite (Bradbury and Baeyens, 2009;Lujaniene et al, 2007Lujaniene et al, , 2010, and kaolinite (Bachmaf and Merkel, 2011;Stumpf et al, 2004). Many studies have evaluated uranyl sorption onto smectites and have found that sorption occurs both by ion exchange and by surface complexation (Bradbury and Baeyens, 2005;Kowal-Fouchard et al, 2004;Turner et al, 1996).…”

“…Other actinides also have high affinities for clays (e.g., Bradbury and Baeyens, 2009;Stumpf et al, 2004;Turner et al, 1998). Pu(IV) and Am (III) experiments with natural soils (Lujaniene et al, 2007(Lujaniene et al, , 2010 and U(VI) and Cm(III) experiments with claystones (Hartmann et al, 2008) showed that in both cases, the clay phases were the dominant sorbents, even in the presence of abundant iron hydroxides and carbonates.…”

Particulate Phases Possibly Conveyed from Nuclear Waste Repositories by Groundwater

“…The latter range into two broad categories, batch tests and flow-through column experiments. In the first case, a solution spiked with the investigated radionuclide is mixed for a certain time-interval with the solid of interest, then the solution and/or the solid are analyzed (e.g., Anderson et al, 2009;Bradbury et al, 2005;Hu, Cheng, Zhang & Yang, 2010;Lujanienė et al, 2010;Rabung et al, 2005;Singer, Maher & Brown Jr, 2009). The column experiments investigate the radiocolloids migration characteristics, by simulating the groundwater flow conditions (e.g., Bryan et al, 2005;Li et al, 2011;Mibus et al, 2007;Solovitch-Vella et al, 2006).…”