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Chen, R.*; Tanaka, Hisashi*; Fukushima, Chikako*; Asai, Miyuki*; Kawamoto, Toru*; Kurihara, Masato*; Ishizaki, Manabu*; Arisaka, Makoto; Nankawa, Takuya; Watanabe, Masayuki
no journal, ,
Transition metal hexacyanoferrates (MHCFs) are preferred to be competitive ion exchangers over other materials due to their selectivity and high capacity. CuHCF
has been much used as precipitants for alkali metal cations, especially cesium, to remove them from aqueous radioactive wastes. Instated of the conventional adsorption by using copper hexacyanoferrate powder, we developed and coated the CuHCF nanoparticles on the electrode substance, and then performed Cs removal in an electrochemical column System. The objective of this study was to develop a nanoparticle film of CuHCF for Cs removal and to suggest a promising column technology for sequential removal of actual radiocesium wastewater.
Emori, Tatsuya; Morita, Keisuke; Ban, Yasutoshi; Sato, Hiromori*; Arai, Tsuyoshi*; Sano, Yuichi
no journal, ,
Two types of adsorbents were, respectively, prepared by impregnating nitrilotriacetamides (NTAamides) of HONTA and TOD2EHNTA in silica beads, and their adsorption properties for fission products (FPs), trivalent lanthanides (Ln(III)), and trivalent minor actinides (MA(III)) were clarified by single-stage batch experiments. Based on the results of the batch experiments, column experiments using HONTA adsorbents were performed by setting the nitric acid concentration and the flow rate of the eluents as parameters, and adsorption and elution behaviors of FPs, Ln(III) and MA(III) were evaluated.