Extraction of Cadmium from Phosphoric Acid Media by Di(2‐ethylhexyl) Dithiophosphoric Acid

Touati, Mouna; Benna-Zayani, MÃÂÃÂ©mia; Kbir‐Ariguib, N.; Trabelsi‐Ayadi, Malika; Buch, Arnaud; Grossiord, J. L.; Pareau, Dominique; Stambouli, Moncef

doi:10.1080/07366290802182840

Cited by 8 publications

(8 citation statements)

References 22 publications

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“…Water solvated species such as the hydrogen ion, the complex in the organic phase, and even the extractant should be considered. However, it has been pointed out that the complex of Cd 2+ extracted by di(2-ethylhexyl)dithiophosphoric acid is anhydrous based on Karl Fischer analysis [32]. Water release from the metal coordination sphere can be considered as a major effect involving the water activity.…”

Section: Correlation Of the Stoichiometric Extraction Constants With mentioning

confidence: 99%

Correlation of the Extraction Constant Values of Zn2+ and Cd2+ from Phosphoric Acid Media by Bis(2,4,4-trimethylpentyl)dithiophosphinic Acid Dissolved in Toluene

2012

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Values of the extraction constants of Zn 2+ and Cd 2+ from aqueous phosphoric acid solutions (0.36 to 7.31 mol·L −1 ) by Cyanex 301 in toluene, involving formation of the complexes ZnR 2 and CdR 2 with R being bis(2,4,4-trimethylpentyl)dithiophosphinate, have been correlated at T = 298 K as a function of the ionic strength. For this purpose the activity coefficients of all of the aqueous species have been calculated taking into account both the protolytic equilibria of concentrated phosphoric acid and complexation reactions between the cations and the phosphoric acid species. Good correlations have been obtained for the extraction constant values with the ionic strength, provided the release of water molecules during the extraction processes is considered. Finally, extraction constant values are reported at infinite dilution.

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Section: Correlation Of the Stoichiometric Extraction Constants With mentioning

confidence: 99%

Correlation of the Extraction Constant Values of Zn2+ and Cd2+ from Phosphoric Acid Media by Bis(2,4,4-trimethylpentyl)dithiophosphinic Acid Dissolved in Toluene

2012

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“…[34] The distribution of the phenol between the aqueous and organic phases, D, may be expressed by Equation (4):…”

Section: Extraction Equilibrium Of Phenol With Bsomentioning

confidence: 99%

Solvent extraction of phenol from aqueous solution with benzyl 2‐ethylhexyl sulfoxide as a novel extractant

et al. 2015

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In this paper, we synthesized a novel structure of sulfoxide, benzyl 2-ethylhexyl sulfoxide (BSO), and evaluated its performance for extracting phenol. The influences of several variables on phenol extraction were investigated, including equilibrium time, pH value, temperature, and salts in the aqueous phase. It was found the BSO dissolved in kerosene was an effective extractant for the recovery of phenol from an aqueous solution at pH ¼ 2. The transfer mechanism of phenol into the organic phase was proved to be the solvation reaction by BSO through hydrogen bonds as a phenol: BSO 1:1 complex. The temperature variation tests showed that the extraction process is exothermic, and phenol extraction efficiency decreased with increased reaction temperature. Phenol could be efficiently stripped from the loaded organic phase with a sodium hydroxide solution. The results obtained establish that the BSO/kerosene system has potential for practical applications in the recovery of phenol from aqueous solutions.

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“…Simplification of the convoluted procedures [3,4,10,[12][13][14][15][16][17] for the divalent-metal, M(II), extraction systems can stimulate an estimate of L functions by many workers. The overall M(II) extraction system with a univalent pairing anion (A − ) can be expressed as the following three extraction equilibria: …”

Section: Case Presentationmentioning

confidence: 99%

“…There are many studies for the metal extraction by crown compounds (L) and other extractants similar to L into various diluents, such as benzene, chloroform, 1,2-dichloroethane, and NB [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. In these studies, procedures of equilibrium analyses have become more difficult for primary users or outsiders of the field year by year.…”

Section: Introductionmentioning

confidence: 99%

An Approximation Method for Determining Key Extraction Constants in the Equilibrium-Analysis of Cd(II) Extraction with 18-Crown-6 Ether into Some Diluents

Kudo¹

2017

JAPLR

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Extraction of Cadmium from Phosphoric Acid Media by Di(2‐ethylhexyl) Dithiophosphoric Acid

Cited by 8 publications

References 22 publications

Correlation of the Extraction Constant Values of Zn2+ and Cd2+ from Phosphoric Acid Media by Bis(2,4,4-trimethylpentyl)dithiophosphinic Acid Dissolved in Toluene

Correlation of the Extraction Constant Values of Zn2+ and Cd2+ from Phosphoric Acid Media by Bis(2,4,4-trimethylpentyl)dithiophosphinic Acid Dissolved in Toluene

Solvent extraction of phenol from aqueous solution with benzyl 2‐ethylhexyl sulfoxide as a novel extractant

An Approximation Method for Determining Key Extraction Constants in the Equilibrium-Analysis of Cd(II) Extraction with 18-Crown-6 Ether into Some Diluents

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