The possibility of rare earth elements (REE) separation by ion interaction chromatography (IIC) employing their complexes with diglycolic acid (ODA) in anion exchange mode has been studied theoretically and experimentally. Calculations, assuming that only trivalent complex is significantly uptaken by the stationary phase, indicated that …

This study contains research on the sorption separation of scandium, zirconium, and titanium from acidic sulfate solutions by a novel monofunctional Purolite RUA21207 ion exchange resin with primary amino groups. The kinetic and equilibrium performance of Sc, Zr, Ti sorption has been investigated. The results revealed that …

Mikeli E, Marinos D, Toli A, Pilichou A, Balomenos E, Panias D. Use of Ion-Exchange Resins to Adsorb Scandium from Titanium Industry's Chloride Acidic Solution at Ambient Temperature. Metals. …

Scandium is a critical metal in increasing demand for modern technologies, such as light-weight aluminum-scandium alloys. Evaluating current and identifying new …

Similarly, the interpolymer system "Lewatit CNP LF:AV-17-8" (2:4) exhibited a 310% increase in the degree of scandium ion sorption compared to the raw Lewatit CNP LF (6:0), and the same interpolymer system showed a 240% increase in the degree of scandium ion sorption compared to the raw AV-17-8 (0:6) after 48 h of interaction.

In this review, we summarizes the typical methods of extracting scandium include solvent extraction, ion exchange, solid phase material adsorption, etc., and …

E. Mikeli et al. studied [38] the absorption process of scandium by ion-exchange resins from acidic iron chloride solution (FeCl2) that generated th titanium industry. The authors used two types ...

Many efforts had been done by researchers in the past 30 years. In this review, we summarizes the typical methods of extracting scandium including solvent extraction, ion exchange, solid phase adsorption, etc. and discussed the difficulties in practical applications and separation mechanisms.

Ion exchange processes have proven to be effective at recovering and purifying a variety of metals on an industrial scale, and in recent years, they have emerged as a promising technology for the recovery of scandium from acid leaching solutions [16,30,31,32,33].

Semantic Scholar extracted view of "Selective ion-exchange separation of scandium(III) over iron(III) by crystalline α-zirconium phosphate platelets under acidic conditions" by Dženita Avdibegović et al.

ion-exchange separation of scandium and lanthanides from the co-leached main elements such as iron, and subsequent liquid-liquid extraction of the eluate for further scandium purification

Abstract—The extraction of scandium from a nitric acid solution after pressure leaching of the hydrate cake that forms upon processing the ore of the Tomtor deposit is studied. The main technological laws of scandium sorption and extraction using various absorbers under static and dynamic conditions are investigated. To extract …

and Ti by straight ion exchange, and separated Sc from Fe3+, Fe2+ and Al3+ by adding EDTA(chelating agent) to chelate Sc before the second-step ion exchange, achieving the separation of impurities from ScCl3 solution. LIU et al [26] removed U and Zr by anion exchange resin from scandium solution and the purification of the solution was achieved.

Many efforts had been done by researchers in the past 30 years. In this review, we summarizes the typical methods of extracting scandium including solvent extraction, ion exchange, solid phase adsorption, etc. and discussed the difficulties in practical applications and separation mechanisms.

Abstract —The extraction of scandium from a nitric acid solution after pressure leaching of the hydrate cake that forms upon processing the ore of the Tomtor …

The company has developed the II–VI Selective-Ion Recovery (SIR) Technology includes the use of a composite extractant-enhanced ion-exchange resin to extract scandium (Sc) from acidic solution or slurries, and its subsequent recovery as a Sc concentrate [21, 22]. The factors that contribute to its performance have been studied to …

DOI: 10.1016/0003-2670(95)00309-N Corpus ID: 95076587; Selective separation and determination of scandium from yttrium and lanthanides in red mud by a combined ion exchange/solvent extraction method

1 Answer. Sorted by: 3. The electronic configuration of the cobalt is [Ar] 3dX1 4sX2 [ A r] 3 d X 1 4 s X 2 the electrons with the higher energy will be snatched and the electronic configuration of Argon is very stable then with scandium you will have easely ScX3+ S c X 3 +. For the Cobalt it is a bit more difficult, like you write the ...

Scandium (Sc) is the 21 st element in the periodic table and is usually classified as a rare earth element. Although abundant in the Earth's crust, rare earths are rarely concentrated in an ore and are relatively rare in the global economy (Gambogi, 2014). ... Assessing the Efficiency of Ion Exchange Resins for the Recovery of Scandium from ...

This research investigates the recovery of scandium from an acid pregnant leaching solution using ion exchange resins. The pregnant leaching solution was …

DOI: 10.1016/j.mineng.2021.107091 Corpus ID: 244183362; Mining value from waste: Scandium and rare earth elements selective recovery from coal fly ash leach solutions @article{Mostajeran2021MiningVF, title={Mining value from waste: Scandium and rare earth elements selective recovery from coal fly ash leach solutions}, author={Mehdi …

Scandium (Sc) is commonly grouped with yttrium (Y) and the 15 elements of the lanthanide series, historically regarded as the rare earth elements (REE). ... The company have indicated the potential for the addition of an Ion Exchange/Solvent Extraction unit to the proposed nickel-cobalt plant in order to ... Annual Report 2018. United States ...

An improvement in purification of scandium through ion exchange chromatography is disclosed in which the oxidation potential of the eluting solution is altered by the addition of potassium chlorate or ammonium chloride so that removal of contaminants is encouraged. The temperature, pH and concentration of the eluent HEDTA are controlled in order to …

A cation exchange mechanism was determined by investigating the effect of anionic and cationic species on the extraction process. The extraction reaction was confirmed by adopting slope analysis method. The loading capacity of Sc with Cyanex925 was found to be close to 3:1. ... Extraction of scandium from ion-adsorptive rare earth …

The ion exchange method is an important means to purify and refine scandium. In most of the separation methods, the separation factors of scandium and other rare earth elements are less than 20, while those of the ion exchange method are as high as hundreds or even thousands, so they can be used for final scandium purification.

First Online: 19 May 2023. 271 Accesses. Abstract. Scandium (Sc), yttrium (Y), and the 15 lanthanides belong to group 3 in the periodic table of elements; the main chemical …

Scandium(III) extractions are interfered with by commonly associated elements such as iron(III), zirconium(IV), titanium(IV), thorium(IV), yttrium(III) and lanthanides(III). The advantages and disadvantages of applications of ion exchange and liquid membrane technologies for scandium recovery are reviewed and compared with …

Scandium(III) extractions are interfered with by commonly associated elements such as iron(III), zirconium(IV), titanium(IV), thorium(IV), yttrium(III) and lanthanides(III). The advantages and disadvantages of applications of ion exchange and liquid membrane technologies for scandium recovery are reviewed and compared with solvent extraction.

An excellent extraction selectivity towards Sc over other REEs in 4 mol/L HCl solution was achieved with the separation factor βSc/REEs over 8000 by 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester (HEHEHP) and the extraction equilibrium can be obtained within 20 min. The extracted Sc can be stripped using 5 mol/L NaOH solution …

ABSTRACT Such physicochemical properties of sec-nonylphenoxy acetic acid (CA-100) as the solubility in water, acid dissociation constant in water, dimerization constant in heptane, and distribution constant in organic solvent-water were measured by two-phase titration. The extraction behaviors of scandium (III), yttrium (III), lanthanides …