Properties of PAN-TBP extraction chromatographic material View Full Text


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Article Info

DATE

2014-07-06

AUTHORS

Kamil Vavřinec Mareš, Ferdinand Šebesta

ABSTRACT

Three production routes of the preparation of a solid extractant based on tributylphosphate (TBP) embedded in the polyacrylonitrile matrix (PAN) have been studied. The method of direct PAN coagulation with TBP was found to be not viable due to the significant TBP solubility in the coagulation bath. The most suitable PAN-TBP solid extractant was prepared by the well-known impregnation method of ready-made neat PAN beads. The kinetics of uranium extraction from 3 mol L−1 HNO3, the effect of nitrate and nitric acids concentrations on the value of weight distribution coefficients Dg as well as the uranium “extraction isotherm” were determined for this material. Uranium extraction was rather fast, approximately 1 h was sufficient for the equilibrium achievement. Capacity for the uranium uptake, measured in batch experiments on PAN-TBP for 0.048 mol L−1 of uranium in 3 mol L−1 nitric acid, was found to be q = 0.363 mmol g−1 (58 % of the theoretical capacity). It was concluded that PAN-TBP material behaves like TBP in liquid–liquid extraction. Extraction capacity determined in column experiments was lower (by about 23 %) than expected from the “extraction isotherm” due to the TBP leaching out of the column. The thus prepared material is therefore not very suitable for multicycle extraction and stripping and can be used once, particularly for the analytical purposes. More... »

PAGES

341-345

References to SciGraph publications

  • 1990-08. Extraction chromatography in the TBP-HNO3 system in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 2006-08. Use of new composite materials for the determination of Cu, Cd, Mo, As, and Sb in biological samples by radiochemical neutron activation analysis in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 2012-08-21. Fast concentration of dissolved forms of cesium radioisotopes from large seawater samples in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 2006-01. Sorption properties of new composite materials suitable for radioanalytical determination of 59Ni and 63Ni in CZECHOSLOVAK JOURNAL OF PHYSICS
  • 2008-03-11. New extraction chromatographic material for rhenium separation in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 1997-06. Composite sorbents of inorganic ion-exchangers and polyacrylonitrile binding matrix in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 2006-01. Study of europium and selected actinides uptake on composite material CMPO-PAN in CZECHOSLOVAK JOURNAL OF PHYSICS
  • 2010-01-06. Extraction chromatographic material with HDEHP on polyacrylonitrile (PAN) in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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    http://scigraph.springernature.com/pub.10.1007/s10967-014-3297-5

    DOI

    http://dx.doi.org/10.1007/s10967-014-3297-5

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    https://app.dimensions.ai/details/publication/pub.1019941586


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