Ion-Exchange as a Separations Method. II. Separations of Several Rare Earths of the Cerium Group (La, Ce, Pr and Nd)<sup>1</sup>

Harris, Darwin H.; Tompkins, Edward R.

doi:10.1021/ja01203a061

Cited by 44 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the interrelationships between most of the variables are so complicated that such direct studies can give, at best, empirical relationships useful in selecting optimum operating conditions. This was amply demonstrated in the early separation studies of fission products and rare earths (16,31,71,72,83,84). However, a certain number of column separation runs are necessary to test theoretically predicted interrelationships which cannot be investigated by other methods.…”

Section: Figure 3 Typical Breakthrough Curvementioning

confidence: 98%

“…By its use Marinski, Glendenin, and Coryell (63) separated radioisotopes of element 61 (promethium) from a fission product mixture. Additional work by Tompkins and associates (16,31,65,83,85), Spedding's group (71, 72), and Ketelle and Boyd (38) has resulted in the development of fairly well standardized methods for separating all the rare earths.…”

Section: Figure 3 Typical Breakthrough Curvementioning

confidence: 99%

See 1 more Smart Citation

Ion Exchange Separations

Tompkins¹

1950

Anal. Chem.

View full text Add to dashboard Cite

show abstract

Section: Figure 3 Typical Breakthrough Curvementioning

confidence: 98%

Section: Figure 3 Typical Breakthrough Curvementioning

confidence: 99%

Ion Exchange Separations

Tompkins¹

1950

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…The LLE is considered as the fundamental step for the LM technique and it has been investigated for REMs removal from industrial wastewaters (Harris and Tompkins, 1947;Bunus et al, 1994;Preston et al, 1996;Lee et al, 2009;Tunsu and Retegan, 2016) and for REM ions separation in ore processing and secondary sources (Tunsu et al, 2016) in order to explore the potential scale up to LM systems.…”

Section: Talebi Et Almentioning

confidence: 99%

The recovery of rare earth metals from WEEE leaching solution via liquid-liquid extraction

Talebi¹,

Marra²,

Cesaro³

et al. 2018

Global NEST Journal

View full text Add to dashboard Cite

<p>The recovery of rare earth metals (REMs) from end-of-life products, such as Waste Electrical and Electronic Equipment (WEEE), is drawing great attention as an attractive strategy for promoting the sustainable development. The hydrometallurgical technique of solvent extraction has been reported to be one of the most interesting method to recover REMs. However, when applied to WEEE, this process is challenged by the heterogeneous composition of electronic waste, completely different from other solid matrices, and it still has much rooms of improvements. This study investigated the extraction, stripping and recovery of REMs from a WEEE leaching solution using Versatic 10 as carrier in the organic phase and oxalic acid as stripping agent. A factorial design was carried out to evaluate the simultaneous effects of factors as the feed phase pH and the concentrations of both extractant and organic phase modifier in the extraction process. Cerium, lanthanum and yttrium were extracted at high percentages using 200 mM of Versatic 10, loaded by 100 mM of TBP in kerosene at pH 7. Moreover, 750 mM of oxalic acid successfully stripped and recovered 7.63 and 13.82 mg/kg of lanthanum and yttrium, respectively.</p>

show abstract

“…Early examples include the separation of rare earth elements (Harris and Tompkins, 1947;Ketelle and Boyd, 1947;Marinsky et al, 1947;Spedding et al, 1947aSpedding et al, , 1947b, separation of sodium and potassium (Cohn andKohn, 1948, Schubert, 1949) and amino acids (Cleaver and Cassidy, 1950).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

2015

View full text Add to dashboard Cite

ÔØ Å ÒÙ× Ö ÔØRecovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT AbstractThe objective of this study was to investigate the applicability and performance of the selected ion exchangers with different physicochemical characteristics and functional groups to simultaneously recover three different platinum group elements (PGE), platinum(IV), palladium(II) and rhodium(III), present in a chloride solution produced by the leaching of spent automotive catalysts. The tested ion exchangers included a resin with a quaternary ammonium functional group (Lewatit MonoPlus (M+) MP 600), a resin with a polyamine functional group (Purolite S985) and a resin with a thiouronium functional group (XUS 43600.00). The study also focused on the achievable desorption from the loaded resins using different eluent systems. The leach solution was chlorine-saturated and contained 2.35 mol/L hydrochloric acid, platinum and palladium in concentrations of 0.13 mmol/L, and rhodium 0.03 mmol/L. It was found that XUS 43600.00 showed the best adsorption performance for platinum(IV) and palladium(II) chloride complexes among the investigated resins, but weak affinity for rhodium(III) chloride complexes was observed for all three resins. The adsorption kinetics were found to obey the Ho pseudo-second order expression. For Lewatit MonoPlus (M+) MP 600 and Purolite S985 the adsorption was best described by the Freundlich isotherm, while for XUS 43600.00 the Langmuir isotherm was more apt. Desorption of the PGE was examined using four different elution agents: sodium thiocyanate (2 mol/L); hydrochloric acid (2 mol/L); thiourea (1 mol/L) in hydrochloric acid (2 mol/L); and thiourea(1 mol/L) in sodium hydroxide (2 mol/L). The results showed that platinum and palladium can be fully eluted with the acidic thiourea but desorption of rhodium proved difficult with all the eluents.

show abstract

Ion-Exchange as a Separations Method. II. Separations of Several Rare Earths of the Cerium Group (La, Ce, Pr and Nd)¹

Cited by 44 publications

References 1 publication

Ion Exchange Separations

Ion Exchange Separations

The recovery of rare earth metals from WEEE leaching solution via liquid-liquid extraction

Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

Contact Info

Product

Resources

About

Ion-Exchange as a Separations Method. II. Separations of Several Rare Earths of the Cerium Group (La, Ce, Pr and Nd)1

Cited by 44 publications

References 1 publication

Ion Exchange Separations

Ion Exchange Separations

The recovery of rare earth metals from WEEE leaching solution via liquid-liquid extraction

Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

Contact Info

Product

Resources

About

Ion-Exchange as a Separations Method. II. Separations of Several Rare Earths of the Cerium Group (La, Ce, Pr and Nd)¹