Extraction Kinetics Of Uranium(VI) With Polyurethane Foam

Ting Huang, Dong Hwang Chen, Shius Dong Huang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The extraction kinetics of uranium(VI) from aqueous nitrate solution with polyether-based polyurethane foam was investigated in a batch reactor with automatic squeezing. The extraction curves of uranium(VI) concentration in solution vs. extraction time exhibited a rather rapid exponential decay within the first few minutes, followed by a slower exponential decay during the remaining period. This phenomenon can be attributed to the presence of two-phase structure, hard segment domains and soft segment matrix in the polyurethane foam. A two-stage rate model expressed by a superposition of two exponential curves was proposed, according to which the experimental data were fitted by an optimization method. The extraction rate of uranium(VI) was also found to increase with increasing temperature, nitrate concentration, and hydration of the cation of nitrate salt.

Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume26
Issue number4
DOIs
Publication statusPublished - 1993 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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