Studies on extraction and separation of La(III) with DEHPA and PC88A in petrofin

Acharya, Sagarika; Mishra, Sujata; Misra, Pratibha

doi:10.1016/j.hydromet.2015.05.005

Cited by 31 publications

(5 citation statements)

References 29 publications

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“…In general, the minimum to maximum concentration ratio of PC88A to La(III) used by Acharya et al. (2015) was ∼10–60. The same ratio in this study was ∼30–270.…”

Section: Resultsmentioning

confidence: 91%

“…Acharya et al. (2015) extracted 0.01 mol/L La(III) with PC88A in the range of 0.1–0.6 mol/L in petrofin. In general, the minimum to maximum concentration ratio of PC88A to La(III) used by Acharya et al.…”

Section: Resultsmentioning

confidence: 99%

“…Acharya et al (2015) extracted 0.01 mol/L La(III) with PC88A in the range of 0.1-0.6 mol/L in petrofin. In general, the minimum to maximum concentration ratio of PC88A to La(III) used by Acharya et al (2015) was ∼10-60. The same ratio in this study was ∼30-270.…”

Section: The Effect Of Pc88a Concentrationmentioning

confidence: 96%

“…It was observed that 5 min was enough to reach extraction equilibrium with TOPO and DBSO. Acharya et al (2015) studied and compared the extraction and separation of La(III) using DEHPA and PC88A dissolved in petrofin (n-tridecane). The results showed that DEHPA is a better extractant than PC88A for La(III) extraction under all experimental conditions considered.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study of the solvent extraction of lanthanum(III) from different acid solutions

Agarwal

Safarzadeh

Galvin

2019

Mineral Processing and Extractive Metallurgy

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Solvent extraction of lanthanum(III) using the organic extractant 2-ethylhexyl phosphonic acid mono-2-ethylhexylester (PC88A) diluted in kerosene from three different aqueous media (sulfuric, nitric and chloride) was investigated. E h -pH and speciation diagrams suggested that free lanthanum ion (La(III)) species predominate under the experimental conditions studied in this paper. The effects of several parameters on the extraction of lanthanum including initial pH (1.5-7), initial La(III) concentration (0.08-1.35 mmol/L), PC88A concentration (10-90 mmol/L) and temperature (25-55°C) were evaluated. In general, both hydrochloric and nitric acids were found to be more effective than sulfuric acid in terms of higher extraction of lanthanum. The stoichiometry of the extraction reaction and also the equilibrium constant were calculated. The extraction of La(III) was significantly enhanced by increasing pH and PC88A concentration and was only slightly increased by increasing temperature. Stripping studies showed that 1 mol/L acid concentration is adequate for effective stripping of lanthanum from the loaded organic. The stoichiometry of the extraction reaction was also investigated using density functional calculations and found to be in reasonable agreement with the experimental results.

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“…In general, the minimum to maximum concentration ratio of PC88A to La(III) used by Acharya et al. (2015) was ∼10–60. The same ratio in this study was ∼30–270.…”

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: The Effect Of Pc88a Concentrationmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A comparative study of the solvent extraction of lanthanum(III) from different acid solutions

Agarwal

Safarzadeh

Galvin

2019

Mineral Processing and Extractive Metallurgy

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“…Liquid–liquid extraction is one of the most popular methods for separation and purification of rare earth elements (REEs). A list of the most widely used extractants for transferring REEs from aqueous solutions to the organic phase is given in the review by Xie et al The organic derivatives of phosphoric acid are highly demanded reagents for intra- and intergroup separation of REEs; di-(2-ethylhexyl)phosphoric acid (D2EHPA, C 16 H 35 PO 4 , HA) is one of the most promising of these compounds. − Because of its high viscosity, D2EHPA is used in practice by mixing with an organic diluent. Zikovsky studied the effect of diluents on REEs extraction with D2EHPA and reported that the recovery was enhanced according to the following order of diluents: heptane, cyclohexane, butyl ether, carbon tetrachloride, toluene, xylene, nitrobenzene, bromoform, chlorobenzene, benzene, hexane, dichloromethane, and chloroform .…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria in Multicomponent Systems Containing o-Xylene, Di-(2-ethylhexyl)phosphoric Acid, Water, Nitric Acid, and Europium (Gadolinium, Dysprosium) Nitrate at 298.15 K

et al. 2017

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The extraction of europium(III), dysprosium(III), and gadolinium(III) nitrates with di-(2-ethylhexyl) phosphoric acid (D2EHPA) in o-xylene was investigated at 298.15 K. Spectrophotometry and ICP-AES techniques were used for rare earth elements (REE) content determination. The content of nitric acid was measured by acid–base titration. The density of the equilibrium phases was determined. In the case of high content of rare earth element nitrates in the initial aqueous solutions, the third solid phase formation was observed during extraction experiments.

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Preparation and characterization of titanium tungstophosphate immobilized on mesoporous silica SBA-15 as a new inorganic composite ion exchanger for the removal of lanthanum from aqueous solution

Ahmadi

Yavari

Yeganeh-Faal

et al. 2016

J Radioanal Nucl Chem

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Studies on extraction and separation of La(III) with DEHPA and PC88A in petrofin

Cited by 31 publications

References 29 publications

A comparative study of the solvent extraction of lanthanum(III) from different acid solutions

A comparative study of the solvent extraction of lanthanum(III) from different acid solutions

Liquid–Liquid Equilibria in Multicomponent Systems Containing o-Xylene, Di-(2-ethylhexyl)phosphoric Acid, Water, Nitric Acid, and Europium (Gadolinium, Dysprosium) Nitrate at 298.15 K

Preparation and characterization of titanium tungstophosphate immobilized on mesoporous silica SBA-15 as a new inorganic composite ion exchanger for the removal of lanthanum from aqueous solution

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