Separation of strontium from low level radioactive waste solutions using hydrous manganese dioxide composite materials

Removal of strontium(II) and cobalt(II) from acidic solution by manganese antimonate

“…The adsorption performance of the as-prepared MnSb sorbent for Sr and Co ions was also compared with that of other manganese oxides and antimony oxides reported as shown in Table 3 [3,10,16,18,28,39,47,48]. Compared to other sorbents in the list, the as-prepared MnSb material showed better Sr and Co adsorption capacity at a lower operation pH and extremely low equilibrium concentrations, which is necessary for the treatment of LLRWs.…”

“…Inorganic compounds are proven candidates for the separation of strontium and cobalt from aqueous wastewaters due to their high selectivity, radiation stability, and good compatibility with final waste forms. In the last decades, numerous types of inorganic materials and sorbents have been reported for the removal of strontium and cobalt, such as minerals, zeolites, metal oxides and their mixtures [1][2][3][4][5][6][7][8]. However, the pH of LLRWs, varying in a wide range from alkaline to acidic, is often a restrictive factor in the use of sorbents since most materials mentioned above exhibit poor performance in acidic solutions.…”

Liquid Radioactive Wastes Treatment: A Review

“…The composite sorbent supported on biosilica was tested for treatment of real liquid radioactive waste with a total salt content of 22.0 g/dm 3 to remove Cs. Another study was devoted to prepare composite ion-exchange resins by coating copper-ferrocyanide (CFC) and hydrous manganese oxide (HMO) powders on polyurethane (PU) foam [30]. Polyvinyl acetate/Acetone was used as a binder.…”

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

“…Therefore 90 Sr is a contamination that must be removed. Treatment of liquid radioactive waste quite often involves the application of several methods such as filtration, precipitation, sorption, ion exchange and membrane separation to meet the requirements for the release of decontaminated effluents into the environment [5][6][7][8][9][10][11]. Adsorption has become one of the most commonly used separation methods due to its simplicity, selectivity and efficiency [12,13].…”