Recovery of plutonium and americium from laboratory acidic waste solutions using tri-n-octylamine and octylphenyl-N-N-diisobutylcarbamoylmethylphosphine oxide

摘要

Plutonium from acidic waste solutions has been recovered quantitatively using tri-n-octylamine (TnOA) in xylene and americium using a mixture of octylphenyl-N-N- diisobutylcarbamoylmethylphosphine oxide (CMPO) and TBP in dodecane.by extraction and extraction chromatographic methods. The Pu(IV)/TnOA species extracted into the organic phase from higher nitric acid concentrations has been confirmed as (R↓(3)NH)↓(2) Pu(NO↓(3))↓(6) (where R↓(3)N = TnOA) by employing slope analysis as well as spectrophotometric studies.# 1997 Elsevier Science B.V.