A new approach for selective Cs+ separation from simulated nuclear waste solution using electrodriven cation transport through hollow fiber supported liquid membranes

Sanhita Chaudhury, Arunasis Bhattacharyya, Seraj A. Ansari, Asok Goswami

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The present work describes a novel and cleaner approach for large scale (litre) separation of cesium from simulated nuclear waste solutions by electrodriven transport through a hollow fiber supported liquid membrane (HFSLM) containing chlorinated cobalt dicarbollide as the carrier. To the best of our knowledge, this is the first report on electrodriven cation transport through HFSLM. The transport selectivity of Cs+ over Na+ and other fission products was studied from synthetic nuclear waste solutions. An attempt has also been made to pre-concentrate radio-cesium from an environmental sample containing very low level of 137Cs (≤ 10–12 M) with excellent transport efficiency. A very high decontamination factor of cesium over Na+ other metal ions have been obtained for all types of feed solution. For neutral feed solution, the current efficiency for the Cs+ transport has been found to be 100%. The present work certainly adds a new dimension to the ongoing membrane based separations.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalJournal of Membrane Science
Volume545
DOIs
StatePublished - 1 Jan 2018
Externally publishedYes

Keywords

  • Cesium
  • Electrodriven transport
  • High level waste
  • Hollow fiber membrane

ASJC Scopus subject areas

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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