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The Environmental fate of Citric Acid and Citrate

Humphreys, Paul (2013) The Environmental fate of Citric Acid and Citrate. Technical Report. Low Level Waste Repository Site License Company, Cumbria, UK.

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Due to the potential for complexing agents to significantly enhance radionuclide and
nonradiological contaminant mobility the permit for disposal of wastes at the LLWR requires
chemical complexing or chelating agents to be excluded (LLWR, 2011). There is recognition
that aminopolycarboxylic acid complexants such as EDTA are potentially more important that
polycarboxylic acids such as citric and oxalic acids due to their relative complexing power and
environmental persistence (Randall et al., 2011). Consequently it has been suggested that
the use of biodegradable decontamination agents should be encouraged and that the
presence of polycarboxylic acids at a concentration of below 0.1% by weight would not be
expected to lead to any significant effect (Randall et al., 2011, LLWR, 2011).
The aim of this review is to investigate the environmental fate and persistence of citric acid in
order to evaluate the position that biodegradation will attenuate the impact of citric acid on the
transport of radionuclides and nonradiological contaminants in the context of the LLWR

Item Type: Monograph (Technical Report)
Subjects: Q Science > Q Science (General)
Schools: School of Applied Sciences > Biomolecular Sciences Research Centre
School of Applied Sciences
Related URLs:
Depositing User: Paul Humphreys
Date Deposited: 29 May 2014 14:54
Last Modified: 03 Dec 2016 18:51


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