Cesium Removal from Hanford Tank Waste Solution Using Resorcinol‐Formaldehyde Resin

Evaluations of Mechanisms for Pu Uptake and Retention within Spherical Resorcinol-Formaldehyde Resin Columns

“…c -From Table 3-3 of Hassan and Adu-Wusu (2003). For Pu concentration calculations, see footnote a. d -From Table 3.3 of Fiskum et al (2006a).…”

“…To further investigate these observations of Pu uptake onto sRF, prior studies of Cs uptake on sRF and on granular resorcinol-formaldehyde resin from Hanford-origin tank-waste solutions also were surveyed. The survey found three additional studies that provide information on Pu uptake and elution from sRF and from ground gel resorcinol-formaldehyde (GGRF) resin (Fiskum et al (2006a); Fiskum et al (2006c), and Hassan and Adu-Wusu (2003), respectively). Each of these three tests used actual Hanford tank-waste solutions.…”

“…The U concentrations did not correlate with any of the anion concentrations. 1.94×10 -8 1.35×10 -8 5.86×10 -9 3.29×10 -8 U 1.53×10 -5 1.93×10 -5 5.21×10 -6 1.79×10 -4 3.39×10 -5 Reference (Fiskum et al 2009) a (Nash and Duignan 2010) b (Hassan and Adu-Wusu 2003) c (Fiskum et al 2006a) d (Fiskum et al 2006c) e a -From Tables 5.10 and 5.11 of Fiskum et al (2009). Pu concentrations for tests with Hanford wastes are based on 239,240 Pu analyses and the Pu isotopic composition of 0.021 wt% 238 Pu, 93.9 wt% 239 Pu, 5.86 wt% 240 Pu, 0.163 wt% 241 Pu, and 0.044 wt% 242 Pu derived by decay-correction to 1 July 2008 from best-basis tank-waste inventories found in Table ES-2 of Kupfer et al (1999).…”

The nature of ion exchange selectivity of phenol-formaldehyde sorbents with respect to cesium and rubidium ions

“…The mutation of tyrosine into valine in the narrowest protein potas sium channel section (ionic filter) causes selectivity loss [1]. From the beginning of the 1990s, the ion exchange properties of phenol formaldehyde and resorcin formaldehyde resins [2][3][4][5] selective toward cesium ions in alkaline solutions has been extensively studied in USA, India, and several other countries in relation to the technology for 137 Cs extraction from atomic industry wastes [6][7][8][9][10][11][12].…”

Storage and Aging Effects on Spherical Resorcinol-Formaldehyde Resin Ion Exchange Performance

“…Cesium ion exchange operations have been successfully demonstrated using SuperLig ® -644 (b) (SL-644) (Fiskum et al 2005) and resorcinol-formaldehyde (RF) (Brown et al 1995a;Bray et al 1996;Fiskum et al 2004;Hassan and Adu-Wusu 2005) on small-scale column studies with simulated and actual Hanford tank wastes. Both ion exchange products are prepared from condensation polymerization (yielding K-functionalized exchange sites) and physically ground and screened to a pre-selected particle mesh size.…”