2010
DOI: 10.1016/j.hydromet.2010.03.005
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Equilibrium study for manganese extraction in sulfate media with D2EHPA in Isoparaffin (17/21)

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Cited by 10 publications
(4 citation statements)
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“…The modified Davies equation was applied for the calculation of activity coefficients of all solutes in the aqueous phase. 11 In our previous studies, we have reported the synergistic solvent extraction of Mn(II) from chloride solutions using mixture of Cyanex 272 and Cyanex 301 dissolved in kerosene. 12 The extracted species in the organic phase was proposed on the basis of slope analysis.…”
Section: ■ Introductionmentioning
confidence: 99%
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“…The modified Davies equation was applied for the calculation of activity coefficients of all solutes in the aqueous phase. 11 In our previous studies, we have reported the synergistic solvent extraction of Mn(II) from chloride solutions using mixture of Cyanex 272 and Cyanex 301 dissolved in kerosene. 12 The extracted species in the organic phase was proposed on the basis of slope analysis.…”
Section: ■ Introductionmentioning
confidence: 99%
“…Sousa Junior et al reported the equilibrium constant for the solvent extraction of manganese from sulfate solutions with D2EHPA in isoparaffin. The modified Davies equation was applied for the calculation of activity coefficients of all solutes in the aqueous phase …”
Section: Introductionmentioning
confidence: 99%
“…15 No caso do extratante D2EHPA, a reação entre os íons metálicos com o extratante, dissolvido em diluentes alifáticos, é comumente descrita na literatura internacional segundo a Equação 1: 16 (1) Alíquotas de iguais volumes (25,00 mL) das soluções aquosas (V aq ) e orgânicas (V or ) foram contatadas em um béquer de vidro de 100 mL e agitadas magneticamente, com auxílio de uma placa de agitação da marca Ika, em velocidade adequada por 5 min à temperatura de 298,15 K. Depois de decorrido esse tempo de contato, as fases aquosas e orgânicas foram decantadas por 40 min e separadas em funil de decantação. 20 As concentrações dos metais divalentes da fase aquosa ([M 2+ ] aq,f ) foram determinadas por espectroscopia de absorção atômica (Spectra model 50B) com grau de incerteza de 10 -4 e as concentrações da fase orgânica ([MH 2x A 2+2x ]) foram determinadas usando-se balanço de massa para cada espécie formada. O pH foi medido usando um pHmetro (Digimed).…”
Section: Introductionunclassified
“…Di-(2-ethylhexyl) phosphoric acid (D2EHPA), one of the acid-based extractants is widely used as carrier in LLE for the extraction of several metals such as Cu 2+ [6], Cd 2+ [7], [8], Fe 3+ [9], Mn 2+ [10], [11], Ni 2+ [12], Zn 2+ [13]. Despite all the advantages of using D2EHPA, several issues must be addressed when working with D2EHPA.…”
mentioning
confidence: 99%