Colloid stable sorbents for cesium removal: Preparation and application of latex particles functionalized with transition metals ferrocyanides

Removal of cesium ions from waste solution using sericite incorporated into nickel hexacyanoferrate

“…5 g of sericite through above process was immersed in 20 mL of 0.5 M NiCl 2 ·6H 2 O solution and placed in a shaking incubator (JEIO TECH, SI-600R, Korea) for 24 h at 25 o C. And then it was filtered by centrifuge (Gyrozen, Gyro 1236 MG, Korea) and washed with deionized water to remove excess NiCl 2 ·6H 2 O. The sample of NiCl 2 loaded onto sericite was added to 10 mL of 5% (wt%) K 3 [Fe(CN) 6 ]· 3H 2 O solution and was reacted in a water bath (JEIO TECH, BS-21, Korea) at 30 o C for 24 h. The NiHCF-sericite was separated by filtration, washed with deionized water and dried at 60 o C. All procedure was repeated three times to verify the incorporation of NiHCF onto the sericite.…”

“…The separation/removal of cesium ions from waste solutions generally can be achieved by means of physical-chemical treatment such as coagulation-precipitation, solvent extraction, adsorption, ion exchange and membrane processes [6][7][8]. Solvent extraction, ion exchange and membrane processes, which have been widely used, are costly and unsuitable for large-scale application [9].…”

Battery-type column for caesium ions separation using electroactive film of copper hexacyanoferrate nanoparticles

“…This suggests the CuHCF NPs film can be successfully regenerated by a reversible oxidation reaction from CN-Fe(II) to CN-Fe(III). In contrast to the conventional method using powder or bulk MHCF sorbents [8,12,13], the effective regeneration performance suggested the battery column system can be utilized in a close circuit.…”

“…Previous studies have focused on MHCFs associated support materials (such as polyacrylonitrile, [12] carboxylic latex [13] and mesoporous silica [14]) with suitable size and shape properties for Cs removal in columns. On the other hand, combined sorbents have been found to possess substantial disadvantages when faced with an enormous challenge of regeneration.…”

Removal of cesium from simulated liquid waste with countercurrent two-stage adsorption followed by microfiltration

“…In recent decades, CuFC has been widely used for the removal of cesium from liquid waste [4,[7][8][9][10][11][12][13][14]. The key for using CuFC as an adsorbent for cesium removal was to separate the saturated adsorbents from the liquid waste, which is particularly challenging because of the small size of the CuFC particles.…”