Add time:07/30/2019         Source:sciencedirect.com

Two ion-exchangers, the first is organic in nature and the other is inorganic named as resorcinol–formaldehyde (R–F) and zirconyl-molybdopyrophosphate (ZMPP) were synthesized and applied to decontaminate some fission radionuclides from radioactive waste streams. The distribution coefficients of the studied radionuclides for the two ion-exchanges at varying pH conditions are evaluated and the data showed that the selectivity sequence of resorcinol–formaldehyde for the studied cations is Cs+ > Co2+ > Eu3+ > Zn2+ which is the same sequence of zirconyl-molybdopyrophosphate while as the X-ray diffraction characterization showed that resorcinol–formaldehyde resin is an amorphous material but zirconyl-molybdopyrophosphate is a semicrystalline one and both of resorcinol–formaldehyde and zirconyl-molybdopyrophosphate are considered as promising materials specially for the decontamination of cesium from radioactive waste solutions.

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