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Removal of some chelators from aqueous solutions using polymeric ingredients
Abstract
Application of nuclear technology in many fields have undoubtedly accompanied by generation of large quantities of radioactive aqueous wastes. These wastes contain significant amounts of organic materials notably complexants, such as thenoyl trifluoroacetone (TTA) and ethylene diamine tetraacetic acid (EDTA) that extensively used in reprocessing and decontamination processes [1–4]. Safe and effective disposal of radioactive waste containing such organic ingredients are diffi- cult tasks because these chelators form water-soluble complexes with most radionuclides. Environmentally, this complexation enhances the migration of disposed radionuclides in geosphere due to the formation of less adhered water-soluble compounds [5]. Also, certain chelators, in radioactive environment, degrade rapidly creating an organic mixture of unaffected chelators’ components along with an array of chelator related fragments. This degradation changes the speciation of disposed radionuclides causing a variation in their leachability and so depresses.
Keywords: TTA EDTA Chelators Removal Amberlite XAD Diffusion model.
Removal of some chelators from aqueous solutions using polymeric ingredients