Removal of cesium from aqueous solutions and radioactive waste simulants by coprecipitate flotation

Potassium cobalthexacyanoferrate–gel beads for cesium removal: kinetics and sorption studies

“…Removal of cesium from different types of waste streams, using various types of sorbents, such as aluminosilicates, phosphates, ferrocyanides and hydrous oxides of multivalent cations, pillared clays and resorcinol formaldehyde resin, has been previously studied by many researchers. [7][8][9][10][11][12] Transition metal hexacyanoferrates are well known for their high affinity towards cesium in a wide range of pH. 13 These metal hexacyanoferrates are synthesized in granular form, for use in column mode, but are of irregular shape, and have poor mechanical stability.…”

An isotope dilution–precipitation process for removing radioactive cesium from wastewater

“…Some researchers however, have forgone the column application and used the metal ferrocyanide as a direct precipitant/absorber of cesium. The precipitant has then been removed by filtration [12], centrifugation [13], flocculation [14], or flotation [15].…”

Research on the treatment of liquid waste containing cesium by an adsorption–microfiltration process with potassium zinc hexacyanoferrate

“…Cesium radioisotopes are among the main fission products with very long half-lives, and include 137 Cs (T 1/2 ∼ 30 years) and 135 Cs (T 1/2 ∼ 2 × 10 6 years) [1]. The treatment of cesium liquid wastes has been studied in the past few decades, including physical, chemical, and biological methods [2][3][4][5]. Ion exchange, adsorption, and precipitation are the traditional methods.…”