47Sc for theranostic medical applications was produced from the neutron activation of a natural calcium target. Liquid–liquid extraction separation radioisotope 47Ca carried out with extractant Cyanex 272 ((2,4,4-trimethylpentyl) phosphinic acid). The effects various parameters on efficiency and two radionuclides were investigated, including time, pH, metal ion concentrations, concentration, di...

Monazita é um dos principais minerais de elementos terras raras leves e está sempre associada à presença tório. Isto traz desafios no processamento devido forte radiação, mas o aproveitamento do tório para uso como combustível nuclear após a transformação 232Th em 233U. Portanto, separação raras, lixiviação da monazita, uma etapa imprescindível que precisa ser otimizada. Neste e...

The extraction of lead from fly ash produced during the thermal treatment of municipal solid wastes was studied using supercritical carbon dioxide (SC-CO(2)) and Cyanex 302 (bis(2,4,4-trimethylpentyl)monophosphinic acid). The extraction of lead from the fly ash was carried out in a 5 cm(3) internal volume reaction vessel under static extraction conditions at 323 K, and 24 MPa for 1 h. The extra...

The optimization of lithium-ion batteries (LiBs) recycling is crucial not only from a waste management perspective but also to decrease the dependence on imports critical raw materials. In addition, diversification technologies very important for better flexibility market. This study aims at investigating recovery Co spent LiBs using solvent extraction real chloride-based solution obtained afte...

The solvent extraction of Fe from aqueous chloride solution by bis-(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302, H2A2) dissolved in kerosene has been investigated over a wide range of aqueous acidity as a function of phase contact time, concentrations of Fe, H and Cl in the aqueous phase, Cyanex 302 concentration in the organic phase and temperature. The equilibration time is 50 ...

this work was aimed to evaluate and compare the performances of the solvents d2ehpa (di-(2-ethylhexyl) phosphoric acid), cyanex 272 (bis (2,4,4-trimethylpentyl) phosphinic acid), and a mixture system of d2ehpa and cyanex272 in the separation of some rare earth elements (rees) including lanthanum, gadolinium, neodymium, and dyspersym from a nitric acid solution. the results obtained showed that ...

This work was aimed to evaluate and compare the performances of the solvents D2EHPA (Di-(2-ethylhexyl) phosphoric acid), Cyanex 272 (bis (2,4,4-trimethylpentyl) phosphinic acid), and a mixture system of D2EHPA and Cyanex272 in the separation of some rare earth elements (REEs) including lanthanum, gadolinium, neodymium, and dyspersym from a nitric acid solution. The results obtained showed that ...