Extraction of cesium-137 from nitric acid medium in the presence of macrocyclic polyethers

Evaluation of polymer inclusion membranes containing crown ethers for selective cesium separation from nuclear waste solution

“…Dietz et al [14] have carried out Cs extraction using crown ether solutions in oxo diluents such as alcohols, ketones, ethers and carboxylic acids. We [15] have also reported the extraction of 137 Cs from the nitric acid medium using several di-benzo-18-crown-6 (DB18C6) derivatives. Structures Fig.…”

Extraction of caesium(I) from HNO3 medium using room temperature ionic liquid containing calix[4]crown ligands as the selective extractants

“…Among the separation methods employed for the recovery of Cs(I) from radioactive waste solutions, solvent extraction methods have been particularly attractive because of their rapidity, ease of operation and large through put [3]. Solvent extraction methods involving exotic reagents such as crown ethers, calixarenes and calix [4]crowns have shown great promise for caesium recovery from the acidic waste solutions [4][5][6][7]. Calix [4]crown molecules (Fig.…”

Layered double hydroxide of Zn and Al, intercalated with hexacyanoferrate(II) ions, as a sorbent for removing cesium radionuclides from aqueous solutions

“…Therefore, the removal of cesium radionuclides from EXPERIMENTAL aquatic media is a priority problem of environmental safety. The methods predominantly used for decontamination of radioactively contaminated waters, in particular, of nuclear effluents, include extraction, chemical precipitation, coagulation, ion exchange, sorption, electrochemical, and membrane methods [6][7][8][9][10][11][12][13][14]. Sorption is widely used and is a cheaper method than other physicochemical decontamination methods requiring additional expenditures and specific chemical reagents, which restricts their wide-scale use.…”