Author(s)

F. Delavente, J.-M. Guillof, O. Thomas, L. Berthon & M.-C. Chat-bonnet

Abstract

Malonamides have been investigated by the C.E.A. (Commissariat a 1'Energie Atomique) to extract actinides (III) and lanthanides (III) from acidic nitrate nuclear waste solutions. The destruction of these potentially incinerable molecules has been tested in relatively soft conditions : thermal oxidation at temperatures below 250°C and photo-oxidation at short wavelengths (185-254 nm) Qualitative and quantitative analysis of main degradation products allows the comparison between these methods. Thermal oxidation leads to a rapid destruction of the initial molecule but numerous by-products and some black insoluble material appear, whereas photo-oxidation is s

Keywords