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Preparation of macroreticular chelating resins containing dihydroxyphosphino and/or phosphono groups and their adsorption ability for uranium
Author(s) -
Egawa Hiroaki,
aka Takamasa,
Ikari Masanori
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070290613
Subject(s) - uranium , adsorption , chelating resin , chemistry , chelation , copolymer , elution , nuclear chemistry , seawater , alkali metal , chromatography , inorganic chemistry , organic chemistry , materials science , metal , metallurgy , metal ions in aqueous solution , geology , polymer , oceanography
The macroreticular chelating resins (RSP, RSPO, RCSP, and RCSPO) containing dihydroxy‐phosphino and/or phosphono groups were prepared and their adsorption capacity for UO 2 2+ and the recovery of uranium from sea water were investigated. RSP and RCSP were prepared by phosphorylation of macroreticular styrene–divinylbenzene copolymer beads and the chloromethylated copolymer beads, respectively. RSPO and RCSPO were prepared by oxidation of RSP and RCSP, respectively. The order of recovery of uranium from sea water with these four resins is as follows: RCSPO ⋍ RCSP > RSPO > RSP. The adsorption of uranium in sea water was not only affected by the chemical structure, but also by physical structure of the resins. Uranium absorbed on the resins was eluted with 0.25 ∼ 1 mol·dm −3 Na 2 CO 3 or NaHCO 3 solution by batch and column methods. The average recovery ratios of uranium from sea water with Na‐form and H‐form RCSP on 10 recycles were 84.9% and 90.5%, respectively, when 20 dm 3 of sea water was passed through the column (resin 4 cm 3 , 10 mm ϕ × 50 mm) at the space velocity of 60 h −1 . RCSP has a high physical stability and resistance against acid and alkali solution.