Abstract

Transition metal ferrocyanides are used since many years to selectively entrap radio-cesium from nuclear contaminated effluents. We investigate the cesium sorption properties on a series of ferrocyanides containing different transition metal ions (Ni2+, Co2+ and Cu2+) and outline the role of the chemical nature of the bivalent metal ion, the iron oxidation state, the presence of K+ in the structure and the grain size of the powders on the equilibrium time and efficiency of the Cs+ sorption.

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