Separation of uranyl ion using polyaniline

Ramkumar, Jayshree; Chandramouleeswaran, S.

doi:10.1007/s10967-013-2553-4

Cited by 12 publications

(6 citation statements)

References 30 publications

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“…Ramkumar reported the chemical oxidation of aniline to generate polyaniline, followed by its application in recovery of uranium from seawater. 153 Due to incorporation of anions, such as Cl − or SO 4 2− , in the polymer during synthesis, it was expected anionic exchange with anionic uranyl complexes could be achieved. Using ethylenediaminetetraacetic acid (EDTA) as a metal complexant to form an anionic uranyl species, a modest affinity for uranium was reported (40% in solution), which was further suppressed by the presence of other competing metals.…”

Section: Chemical Reviewsmentioning

confidence: 99%

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Materials for the Recovery of Uranium from Seawater

et al. 2017

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More than 1000× uranium exists in the oceans than exists in terrestrial ores. With nuclear power generation expected to increase over the coming decades, access to this unconventional reserve is a matter of energy security. With origins in the mid-1950s, materials have been developed for the selective recovery of seawater uranium for more than six decades, with a renewed interest in particular since 2010. This review comprehensively surveys materials developed from 2000-2016 for recovery of seawater uranium, in particular including recent developments in inorganic materials; polymer adsorbents and related research pertaining to amidoxime; and nanostructured materials such as metal-organic frameworks, porous-organic polymers, and mesoporous carbons. Challenges of performing reliable and reproducible uranium adsorption studies are also discussed, as well as the standardization of parameters necessary to ensure valid comparisons between different adsorbents.

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Section: Chemical Reviewsmentioning

confidence: 99%

“…Ramkumar reported the chemical oxidation of aniline to generate polyaniline, followed by its application in recovery of uranium from seawater . Due to incorporation of anions, such as Cl – or SO 4 2– , in the polymer during synthesis, it was expected anionic exchange with anionic uranyl complexes could be achieved.…”

Section: Synthetic Polymersmentioning

confidence: 99%

Materials for the Recovery of Uranium from Seawater

et al. 2017

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“…One enantiomer of the pair is preferentially transported by the chiral selectors in the liquid membrane to the receiving phase usually in the presence of a pH or concentration gradient. 95,109 A careful selection of the chiral carrier must be done because it has to preferentially bind one of the two enantiomers. Also, the solubility of the carrier (and consequently the formed complex) in the feed, membrane phase, and receiving phase must be determined.…”

Section: Liquid Membranes For Chiral Resolutionmentioning

confidence: 99%

Semi-continuous and continuous processes for enantiomeric separation

2022

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“…33,34 BLMs have used so far for basic studies of transport since they provide low interfacial area and poor mixing of the three phases. 35 In supported liquid membranes, a microporous membrane is impregnated with an organic solvent and then sandwiched between an aqueous feed and strip solution. 36 The microporous membrane for the SLM can be flat-sheet ( Fig.…”

Section: Configurations Of Liquid Membranesmentioning

confidence: 99%

Use of D2EHPA-mediated liquid membranes for heavy metal ions separation: A review

Albaraka¹

2019

Rev.Roum.Chim.

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The removal and recovery of heavy metal ions by various types of liquid membranes (LMs), coupled with the commercial extractant di-2-ethylhexyl phosphoric acid (D2EHPA) as carrier, have been extensively studied by many researchers. In this paper, the D2EHPA-mediated LM systems used for transport of heavy metal ions are classified, briefly summarized, and reviewed. The effects of the system chemical compositions and the LM configurations on the separation selectivity and the transport efficiency are evaluated. It seems that depending on the way of choosing the chemical composition of the D2EHPA system, the formed LMs can separate selectively one or a mixture of heavy metal ions. Practically, D2EHPA-mediated LMs can be applied in a laboratory-scale as separation and preconcentration step for a heavy metal ion over the detection limits of routine analytical instruments. For large-scale applications on the removal and recovery of the heavy metal ions from waste water or industrial effluents, further modifications and improvements to the existing LM configurations should be developed in order to surmount certain problems such as slow transport rate or reduced stability of some LMs.

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Separation of uranyl ion using polyaniline

Cited by 12 publications

References 30 publications

Materials for the Recovery of Uranium from Seawater

Materials for the Recovery of Uranium from Seawater

Semi-continuous and continuous processes for enantiomeric separation

Use of D2EHPA-mediated liquid membranes for heavy metal ions separation: A review

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