Extraction of Manganese(II) with Bis(2,4,4-trimethyIpentyl)monothiophosphinic Acid and Its Spectrophotometric Determination with Formaldoxime

Argekar, A. P.; Shetty, Ashok K.

doi:10.2116/analsci.13.131

Cited by 13 publications

(7 citation statements)

References 24 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…40-90 o C) than in the present work and carbon was not eliminated. There was no difference on zinc leaching by both acids, but manganese was somewhat better leached by HCl when compared to H 2 SO 4 at a given leaching time.…”

contrasting

confidence: 69%

“…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). 40 On the other hand, the extraction of Zn(II) from sulfate/chloride leachates or galvanizing liquors has been proposed as a route to zinc concentration and separation from impurities (such as Fe(III), Co(II), Cu(II) and Mn(II)).…”

Section: Introductionmentioning

confidence: 99%

“…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). 40 On the other hand, the extraction of Zn(II) from sulfate/chloride leachates or galvanizing liquors has been proposed as a route to zinc concentration and separation from impurities (such as Fe(III), Co(II), Cu(II) and Mn(II)). Both neutral and cation exchanger extractants such as TBP, D2EHPA, carboxylic acids, amines, Cyanex 923 (trialkylphosphine oxides) and Cyanex 302 (bis(2,4,4trimethylpentyl)monothiophosphinic acid) have been tested in acidic medium.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

View full text Add to dashboard Cite

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.

show abstract

contrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

show abstract

“…Therefore, due to economic and environmental viewpoints, the recovery of manganese from these streams is of interest [3]. For the quantitative recovery of manganese and corecovery of other associated metal ions, the emulsion liquid membrane process may offer the cheapest and the most suitable technique [6][7][8][9][10][11][12][13]. But, metal extraction with emulsion liquid membrane is an attractive process due to its high selectivity and could be used for dilute metals system compared to solvent extraction [4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Extraction and separation of Ag(I), Mn(II), Zn(II) and Co(II) using various extractants such as D2EHPA, tri-n-butyl phosphate and Cyanex ® 272, Cyanex ® 302 from different solutions have been reported (Ritcey and Lucas, 1971;Devi, et al, 1997). For the quantitative recovery of manganese and co-recovery of other associated metal ions, the emulsion liquid membrane process may offer the cheapest and the most suitable technique [12][13]. However, as far as there is no work reported on extraction and separation of manganese ions with MDEHPA as an extractant and economically, MDEHPA were cheaper than D2EHPA.…”

Section: Introductionmentioning

confidence: 99%

Separation of manganese from aqueous solution using an emulsion liquid membrane

et al. 2015

View full text Add to dashboard Cite

The present study deals with the carrier-facilitated transport of manganese from this acidic leach solution in the ELM system. The ELM consists of MDEHPA as the extractant, industrial solvent as the inert diluent; non-ionic polyethylene glycol as a surfactant and sulfuric acid as the stripping solution. The main parameters influential affecting the ELM stability and extraction of manganese are the pH of the acidic leach solution, mixing speed, concentration of the stripping solution, extractant and surfactant, phase ratio and treatment ratio. With respect to the parameters mentioned, the optimum conditions for the process were determined. The results demonstrated the possibility of 93% extraction of manganese by ELM from the acidic leach solutions at optimum operational conditions.

show abstract