Speciation of uranium(VI) in the presence of cellulose degradation products


Speciation of uranium(VI) in the presence of cellulose degradation products

Brinkmann, H.; Moll, H.

Low and intermediate level waste contain cellulosic material in considerable amounts. In a repository nuclear waste is often surrounded by cementitious backfill material. If water ingresses a hyperalkaline environment will be established. Since cellulose will be relatively fast degraded under alkaline conditions, there is a high risk that small organic, water soluble molecules will be formed. These molecules can act as complexing agents for radionuclides and thereby affecting their sorption behavior and solubility adversely. Therefore the focus of current investigations is on the interaction of uranium (VI) with Isosaccharinic acid (ISA) as main degradation product of cellulose first in the acidic pH range. The progress and results of these studies within the MIND project (work package 1) will be presented.

Keywords: Cellulose; Isosaccharinic acid; Uranium; Speciation

Related publications

  • Lecture (others)
    MIND Project Annual Meeting 2017, 03.-05.05.2017, Prague, Czech Republic

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