Recovery and separation of Ce3+ and Y3+ ions from aqueous solutions by ion flotation

A review of the applications of ion floatation: wastewater treatment, mineral beneficiation and hydrometallurgy

“…85 Later, they found that cerium(III) and yttrium(III) could be concentrated individually from solutions of their salts at pH 4.5 to 6 when sodium dodecyl sulfate was used as the surfactant; the experimental results were consistent with the calculated dissociation constant of dodecyl sulfuric acid obtained from experimental potentiometric titration curves of the solutions. 15 Additionally, they used sodium dodecyl sulfate as a collector to concentrate lanthanides; upon addition of chloride ions in concentrations of 0.01 to 0.1 M, a decreasing tendency of the distribution coefficients and shis of the maximum recovery to the region of higher pH values were noted. A maximum distribution coefficient could be obtained at a chloride concentration of 0.01 M, which helped to improve the separation efficiency (as shown in Table 3).…”

“…[6][7][8][9] In the original studies, ion otation was mostly used for preconcentrating precious metals from dilute solutions. To date, the ion otation method has also been applied for wastewater and water treatment, [10][11][12] recovery of precious metals, 13,14 pre-concentrating of rare earth elements, 15,16 and selective separation of multicomponent ions. 17,18 The current state of the application of ion otation is therefore reviewed in this paper.…”

Ion flotation for removal of Ni(II) and Zn(II) ions from wastewaters

“…The removal of heavy metals such as Cu(II), Zn(II), Cr(III) and Ag(I) from wastewaters was studied using sodium dodecyl sulfate (SDS) and hexadecyltrimethyl ammonium bromide as collectors, obtaining a maximum metal removal of 74% (Polat and Erdogan, 2007). Ion flotation has also been used for other ions such as removing halide complexes of aluminum subgroup metals, Ce(III), Y(III), La(III), Ho(III), Cr(VI), Co(II), Cu(II), Ag(I) and Au(II) (Ghazy et al, 2008;Chirkst et al, 2009;Reyes et al, 2009, Strel'tsov andAbryutin, 2010;Chirkst et al, 2012;Mal'tsev and Vershinin, 2012). Removal of cadmium with SDS as collector was studied by ion flotation.…”

The Method of Removal Yttrium (Iii) and Ytterbium (Iii) From Dilute Aqueous Solutions

“…That is why an increase in efficiency of separation of rare-earth elements with similar properties is a pressing problem, permitting decreasing the cost of individual rare-earth elements and their oxides, and expand the possibility of their use. When employing ion flotation high separation factors for rare-earth elements are not observed [Chirkst et al 2009a]. Studying of chloride ions influence on ion flotation process is of interest.…”