Synergistic extraction of cerium from sulfuric acid medium using mixture of 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester and Di-(2-ethyl hexyl) phosphoric acid as extractant

Luo, Xinghua; Huang, Xiaowei; Zhu, Zhaowu; Long, Zhiqi; Liu, Ying

doi:10.1016/s1002-0721(08)60204-5

Cited by 47 publications

(18 citation statements)

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“…The use of different mixtures of acidic organophosphorous extractants in order to improve the extraction efficiency and selectivity of REE has attracted attention in the last decade (Tong et al, 2013;Torkaman et al, 2013;Xiong et al, 2005Xiong et al, ,2005. In order to obtain an optimized extractant system which could decrease the acidity required for stripping the loaded D2EHPA as well as increase the extraction efficiency of EHEHPA, the extraction of REE with mixtures of D2EHPA and EHEHPA has been reported as a promising method (Huang et al, 2008;Nayak et al, 1999;Santhi et al, 1991;Wang et al, 2006;Xinghua et al, 2009;Zhang et al, 2008). Both a higher selectivity and extraction efficiency of REE have been achieved by using mixtures of D2EHPA and EHEHPA (C. Zhang et al, 2014;F.…”

Section: Introductionmentioning

confidence: 99%

Separation of ND(III), DY(III) and Y(III) by solvent extraction using D2EHPA and EHEHPA

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Separation of ND(III), DY(III) and Y(III) by solvent extraction using D2EHPA and EHEHPA

et al. 2015

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“…Many extractants have been reported and applied in nitric acid and sulfuric acid for Ce(IV) extraction, for example, acidic organophosphorus extractants [22][23][24][25][26][27], neutral organophosphorus extractants [28][29][30][31][32][33][34][35][36], amines [37], and bifunctional ionic liquid extractants (Bif-ILEs) Table 2). Synergistic extraction [26,35] is also an important method to enhance the extraction efficiency. It was reported that P204 + P507 and P204 + Cyanex 923 had synergistic extraction effects for Ce(IV) extraction from sulfuric acid medium.…”

Section: Solvent Extraction Of Ce(iv)mentioning

confidence: 99%

“…A number of extractants such as acidic organophosphorus extractants [22][23][24][25][26][27], neutral organophosphorus extractants [28][29][30][31][32][33][34][35][36], amines [37], bifunctional ionic liquid extractants (Bif-ILEs) [38][39][40], and others [41][42][43][44][45][46][47][48] have been used for the extraction and separation of Ce. When Ce was extracted into organic phase, pure cerium solution can be obtained by stripping, and then cerium products can be obtained by adding ammonium carbonate, oxalic acid, ammonia water, and so on.…”

mentioning

confidence: 99%

Extraction and Recovery of Cerium from Rare Earth Ore by Solvent Extraction

Li¹,

Chen²,

Zou³

2019

Cerium Oxide - Applications and Attributes

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Rare earth elements are widely found in many minerals, some of which, such as bastnaesite, monazite, and xenotime, are of great commercial value. Cerium (Ce) is the rare earth element with the highest content in light rare earth ore. Solvent extraction is the most effective and efficient method to recover and separate Ce from other light rare earth elements. After acid leaching of rare earth minerals, leaching solution was obtained, and cerium oxide of products of high purity was obtained by extraction and stripping. It is well known that Ce(IV) can be easily separated from the other RE(III) by adopting the traditional solvent extraction. Based on this principle, the clean process of oxidation roasting and Ce(IV) separation for Sichuan bastnaesite was developed. And then, a preliminary flow sheet of two-step oxidation and extraction of Ce(IV) for Bayan Obo mixed rare earth ores was further proposed.

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“…In addition, tri-n-octylphosphine oxide (TOPO), derivations of carboxyl acid, amines, ketones, etc. can also be used in such extractions [1,4,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effective Parameters Interaction Study for Cerium Extraction From Sulfuric Media Using Di-(2-Ethylhexyl) Phosphoric Acid

Kashi¹,

Habibpour²,

Maleki³

et al. 2017

ChChT

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Abstract.1 The solvent extraction of cerium(III) from its sulfuric solution with di-(2-ethylhexyl) phosphoric acid diluted by kerosene was investigated. Initially, a survey was conducted in order to identify the conditions influencing the solvent extraction process. Extractant concentration in the organic phase, organic phase to aqueous phase ratio, temperature, pH, and contact time were identified as important factors. Among these factors, the temperature and contact time were found less effective in comparison to other factors. Thus, a contact time of ten minutes for the two phases at room temperature of 298 K was chosen for all experiments. Design expert software was employed for designing the experiments, investigating the effects of the factors on the solvent extraction, statistical analysis, and obtaining the optimal values of the factors. It was established that the factors influencing the solvent extraction, except extractant concentration and organic phase to aqueous phase ratio, were independent and have no interaction on each other.

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Synergistic extraction of cerium from sulfuric acid medium using mixture of 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester and Di-(2-ethyl hexyl) phosphoric acid as extractant

Cited by 47 publications

References 0 publications

Separation of ND(III), DY(III) and Y(III) by solvent extraction using D2EHPA and EHEHPA

Separation of ND(III), DY(III) and Y(III) by solvent extraction using D2EHPA and EHEHPA

Extraction and Recovery of Cerium from Rare Earth Ore by Solvent Extraction

Effective Parameters Interaction Study for Cerium Extraction From Sulfuric Media Using Di-(2-Ethylhexyl) Phosphoric Acid

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