Recovery of purified radiocesium from acidic solution using ammonium molybdophosphate and resorcinol formaldehyde polycondensate resin

Evaluation of Polyethersulfone‐based Composite for Selective Separation of Cesium from Acidic Media

“…BC values of 27.9, 23.4, and 20.1 mg‐Cs/g were obtained at 0.1, 1, and 4 M‐HNO 3 , respectively. Previous studies on AMP‐PAN composites showed BC values between 5.7 and 30.6 mg‐Cs/g at different acidities . Overall, our results indicate that the synthesized particle possesses comparable Cs + ‐sorption properties to other composites for column operation.…”

“…As discussed above, it is important to study the elution behaviors of Cs + after sorption. AMP crystals release the adsorbed ion by their dissolution at high pH (>5) or by conditioning in concentrated NH 4 NO 3 , NH 4 Cl, or their mixture with other acids . Here, we investigated several factors for the selective recovery of Cs + .…”

“…AMP crystals release the adsorbed ion by their dissolution at high pH (>5) or by conditioning in concentrated NH 4 NO 3 , NH 4 Cl, or their mixture with other acids. 22,24,43,44 Here, we investigated (Figure 7(a)). The recovery also depends on the loaded amount of Cs + onto the column (Figure 7(b)).…”

Selective separation of Cs(I) extraction from actual high level waste using a solvent containing calix [4]-bis 2,3-naphtho-crown-6

“…Ion-exchange based methods such as RFPR resin have been used for recovery from intermediate level wastes where the Cs concentration is much lower [10]. On the other hand, though AMP based inorganic ion exchanger resins have been suggested for the recovery from acidic wastes such as the HLW, stripping has been problematic [11].…”

Hollow fiber supported liquid membrane studies using a process compatible solvent containing calix[4]arene-mono-crown-6 for the recovery of radio-cesium from nuclear waste

“…The selective recovery of the radio-cesium not only bring down the radioactivity of the HLW, but the recovered radionuclide can find myriad applications including sewage sludge treatment, brachey therapy, blood irradiator, sanitization of hospital accessories, etc [1,2]. There are several selective reagents for radio-cesium recovery which include precipitation using copper ferrocyanide [3], tetraphenylborate [4], RFPR (resorcinolformaldehyde polycondensate resin [5], zeolite [6], AMP (ammonium molybdophosphate) [7], CST (crystalline sillicotitanate) by ion-exchange [8], crown ethers / calix-crowns and CCD (chlorinated cobalt dicarbollide) [9][10][11]. Though both, the crown ethers and the calix-crowns, are known to separate the metal ion based on the size selective complexation, calix-crown-6 ligands are known to be more efficient [12][13][14][15].…”