15-06-2017 дата публикации
Номер: WO2017099099A1
Автор:
SAKUMA, Takashi,
KOMATSU, Makoto,
IZUMI, Takeshi,
MIYABE, Shinsuke,
KINOSE, Yutaka,
KIKUCHI, Masahiro,
SAKAMOTO, Takeshi
Принадлежит:
In the present invention, waste liquid comprising radioactive cesium and radioactive strontium is fed, at a flow linear velocity (LV) of 1 m/h to 40 m/h inclusive and a space velocity (SV) of no higher than 200 h-1, through an adsorption tower filled to a layer height of 10 cm to 30 cm inclusive with a particulate adsorbent having a particle size of 250 μm to 1200 μm inclusive. The adsorbent includes: at least one crystalline silicotitanate selected from the crystalline silicotitanates represented by general formulas Na4Ti4Si3O16⋅nH2O, (NaxK(1-x))4Ti4Si3O16⋅mH2O, and K4Ti4Si3O16⋅lH2O (in the formulas, x indicates a number that is greater than 0 but less than 1, and n, m, and l each indicate a number from 0 to 8); and at least one titanate selected from the titanates represented by general formulas Na4Ti9O20⋅qH2O, (NayK(1-y))4Ti9O20⋅rH2O, and K4Ti9O20⋅tH2O (in the formulas, y indicates a number that is greater than 0 but less than 1, and q, r, and t each indicate a number from 0 to 10).
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