Satya Ranjan Guchhait, Kankan Patra, Kartikey K. Yadav, D.K. Singh, Arijit Sengupta, T. P. Valsala, D.B. Sathe, R.B. Bhatt
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Study of plutonium recovery from acidic feed using polyethersulfone encapsulating TBP, DEHPA, and mixture of TBP and DEHPA beads
ABSTRACTPolyethersulfone (PES) composite beads encapsulating the extractants di-(2-ethylhexyl) phosphoric acid (DEHPA), tributyl phosphoric acid (TBP), and mixture of DEHPA & TBP were synthesized. The synthesis was carried out using phase inversion method. Subsequently, these PES beads were applied for the recovery of plutonium [Pu (IV)] from different aqueous acidic medium. In kinetic studies, the extraction of Pu (IV) was found to be fast and equilibrium was attained within 5 minutes. In batch sorption studies, the role of aqueous acidity and nitrate ion concentration on extraction efficiency was evaluated. Also, the effects of variation of acid medium, concentration of metal ion, extractant concentration were examined for Pu (IV) recovery. Back extraction was effectively carried out using oxalic acid. The reusability of the PES beads was tested for 10 extraction – stripping cycles.KEYWORDS: Polyethersulfone composite beadsDEHPATBPsorptiondesorptionnitric acidplutoniumsorption studies AcknowledgmentsAuthors acknowledge U. Dani, C.E, NRB, BARCDisclosure statementNo potential conflict of interest was reported by the author(s).
期刊介绍：
This international journal deals with fundamental and applied aspects of separation processes related to a number of fields. A wide range of topics are covered in the journal including adsorption, membranes, extraction, distillation, absorption, centrifugation, crystallization, precipitation, reactive separations, hybrid processes, continuous separations, carbon capture, flocculation and magnetic separations. The journal focuses on state of the art preparative separations and theoretical contributions to the field of separation science. Applications include environmental, energy, water, and biotechnology. The journal does not publish analytical separation papers unless they contain new fundamental contributions to the field of separation science.
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