Solvent extraction equilibrium and modeling studies of manganese from sulfate solutions by a mixture of Cyanex 301 and TBP

Batchu, Nagaphani Kumar; Sonu, Chong Ho; Lee, Man Seung

doi:10.1016/j.hydromet.2014.01.009

Cited by 27 publications

(9 citation statements)

References 24 publications

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“…In order to compare the extraction behavior of Pd(II) between single Cyanex 301 and its mixture with cationic (D2EHPA, PC 88A, and Cyanex 272), neutral (TBP and TOPO), anionic of Cyanex 301 and TBP was around 25%. Grigorieva et al [19] and Batchu et al [20] reported that the strength of the interaction between Cyanex 301 and electron-donor additives decreased in the following order TOA > TOPO > TBP, which is in good agreement with our data. Table 2 shows the stripping percentage of Pd(II) by several agents.…”

Section: Extraction Of Pd(ii) With Mixture Of Cyanex 301 and Various supporting

confidence: 93%

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Cationic Mixtures

Truong¹,

Lee²,

Son³

2017

Preprint

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Section: Extraction Of Pd(ii) With Mixture Of Cyanex 301 and Various supporting

confidence: 93%

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Cationic Mixtures

Truong¹,

Lee²,

Son³

2017

Preprint

Self Cite

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“…The extraction percentage of Pd(II) by the mixture of Cyanex 301 and TBP was around 25%. Grigorieva et al [19] and Batchu et al [20] reported that the strength of the interaction between Cyanex 301 and electron-donor additives decreased in the following order: TOA > TOPO > TBP, which is in good agreement with our data. Moreover, the distribution ratio of Pd(II) with these mixtures, such as Cyanex 301 + TBP, Cyanex 301 + TOPO, and Cyanex 301 + Alamine 336, is displayed in Table 3.…”

Section: Extraction Of Pd(ii) With Mixture Of Cyanex 301 and Various supporting

confidence: 93%

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Truong

Lee

Son

2017

Metals

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Cyanex 301 and 5,8-diethyl-7-hydroxyldodecane-6-oxime (LIX 63) can selectively extract Pd(II) over Pt(IV) from concentrated hydrochloric acid solutions. Therefore, solvent extraction experiments have been performed by extractant mixtures containing either Cyanex 301 or LIX 63, and the extraction behavior of Pd(II) was compared. Among the mixtures of Cyanex 301, the highest synergistic enhancement coefficient was achieved by mixing Cyanex 301 and trioctylphosphine oxide (TOPO). However, it was very difficult to strip the Pd(II) from the loaded mixture phase. Among the mixtures of LIX 63, the mixture of LIX 63 and alamine 336/TOPO enhanced the extraction of Pd(II). Although the synergistic coefficient by Cyanex 301 + TOPO was higher than that by LIX 63 + Alamine 336, the Pd(II) in the loaded mixture phase of LIX 63 and alamine 336 was easily stripped by thiourea.

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“…35 Organophosphorus and organothiophosphorus extractants have been extensively studied for the separation and recovery of many metals by solvent extraction. 38 Many SX methods for separating and preconcentrating Mn(II) have been reported using D2EHPA (di-(2-ethylhexyl)phosphoric acid), TBP (tributylphosphate), TOA (trioctylamine) or TOPO (trioctylphosphine oxide). 39,40 However, the existing methods suffer from several drawbacks, such as long extraction time, multiple extraction stages, the need of masking agents and co-extraction of commonly associated ions, such as Zn(II) and Fe(III).…”

Section: Introductionmentioning

confidence: 99%

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

Ibiapina¹,

Afonso²,

Silva³

et al. 2018

Quim. Nova

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This paper describes a route for recovering manganese and zinc from spent zinc-MnO 2 dry cells via acid leaching using sulfuric or hydrochloric acids as leachants. Hydrogen peroxide was added as reductant. Experiments were run at 25-40 o C for 1-3 h. Under the best optimal conditions, over 97.5 wt.% of zinc and manganese were leached by both acids. Zn(II) was best extracted at high free acidity (≥ 1 mol L -1 ) with tributylphosphate (TBP) or trialkylphosphine oxides (Cyanex 923) diluted in n-heptane. Cyanex 923 was a better extractant than TBP, and the extraction was better performed in hydrochloric leachates. Mn(II) was more co-extracted from hydrochloric leachates and when Cyanex 923 was the extractant, but was easily scrubbed with dilute leachant (~1-2 mol L -1 ). Zn(II) striping was possible using 5 mol L -1 HCl or H 2 SO 4 . Manganese was precipitated as oxalate (MnC 2 O 4 .2H 2 O), free of leached contaminants. High-purity sodium salts of the anions of the leachants were recovered after slow evaporation of the final solution.

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Solvent extraction equilibrium and modeling studies of manganese from sulfate solutions by a mixture of Cyanex 301 and TBP

Cited by 27 publications

References 24 publications

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Cationic Mixtures

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Cationic Mixtures

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

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