Hiroaki Egawa

TL;DR: In this paper, a macroreticular cation exchange resins containing phosphoric acid groups (RGP) were prepared by the reaction of GMSC-divinylbenzene copolymer beads with either phosphorous acid or phosphorous oxychloride, and the adsorption behavior of metal ions was investigated.

TL;DR: In this paper, the authors designed the amidoxime resins (RNH) suitable for circulating fluidized bed adsorbers, which were prepared from precursory acrylonitrile-divinylbenzene copolymer beads of different particle sizes and chemical and physical properties of the resulting RNH were evaluated.

TL;DR: In this paper, a comparative study was conducted on the adsorptions of cobalt and nickel from aqueous ammonium nitrate solutions on a Levextrel resin containing acidic organophosphinate extractant, Cyanex 272, as an active component and on chelating resins containing phosphorus-based acidic functional groups.

TL;DR: The use of macroporous chelating resins (RSP, RSPO, RCSP, and RCSPO) was shown to be very effective in concentrating uranium from seawater and separating it from most other elements.

TL;DR: Macroreticular chelating resins containing aminomethylphosphonic acid groups were prepared by reaction of methyl methacrylate/divinylbenzene copolymer beads with triethylenetetramine, followed by the reaction of the products with phosphorous acid and formaline.