公开(公告)号：US11213799B2

公开(公告)日：2022-01-04

申请号：US16065386

申请日：2016-12-08

Applicant: EBARA CORPORATION ,  NIPPON CHEMICAL INDUSTRIAL CO., LTD.

Inventor： Takashi Sakuma ,  Makoto Komatsu ,  Takeshi Izumi ,  Shinsuke Miyabe ,  Yutaka Kinose ,  Kiyoshi Satou ,  Kenta Kozasu ,  Mari Tokutake ,  Takeshi Sakamoto ,  Kaori Sugihara

IPC: B01J20/06 ,  G21F9/12 ,  B01J20/28 ,  C01F17/235 ,  B01J20/02 ,  B01J20/281 ,  C02F1/28

Abstract: An adsorbent capable of adsorbing radioactive antimony, radioactive iodine and radioactive ruthenium, the adsorbent containing cerium(IV) hydroxide in a particle or granular form having a particle size of 250 μm or more and 1200 μm or less; and a treatment method of radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium, the treatment method comprising passing the radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium through an adsorption column packed with the adsorbent, to adsorb the radioactive antimony, radioactive iodine and radioactive ruthenium on the adsorbent, wherein the absorbent is packed to a height of 10 cm or more and 300 cm or less of the adsorption column, and wherein the radioactive waste water is passed through the adsorption column at a linear velocity (LV) of 1 m/h or more and 40 m/h or less and a space velocity (SV) of 200 h−1 or less.

公开(公告)号：US20180008954A1

公开(公告)日：2018-01-11

申请号：US15545533

申请日：2016-01-13

Applicant: Nippon Chemical Industrial Co., Ltd.

Inventor： Shinsuke Miyabe ,  Yutaka Kinose ,  Kenta Kozasu ,  Takeshi Sakamoto ,  Kiyoshi Satou ,  Kaori Sugihara

IPC: B01J20/18 ,  B01J20/28 ,  B01J20/02 ,  B01J20/06 ,  G21F9/12 ,  B01J20/30

CPC classification number: B01J20/18 ,  B01J20/02 ,  B01J20/0207 ,  B01J20/0233 ,  B01J20/0277 ,  B01J20/0288 ,  B01J20/0292 ,  B01J20/06 ,  B01J20/186 ,  B01J20/28004 ,  B01J20/28016 ,  B01J20/30 ,  B01J20/3021 ,  B01J20/3078 ,  B01J20/3085 ,  B01J2220/42 ,  C02F1/281 ,  C02F2101/006 ,  C02F2101/12 ,  G21F9/02 ,  G21F9/12

Abstract: Provided is an adsorbent for removal of iodide ions and iodate ions, which exhibits excellent adsorption performance of iodide ions and iodate ions. An adsorbent according to the present invention comprises cerium(IV) hydroxide and a poorly soluble silver compound. It is preferable that the content of cerium(IV) hydroxide is 50% by mass or more and 99% by mass or less, and the content of the poorly soluble silver compound is 1% by mass or more and 50% by mass or less. It is also preferable that the poorly soluble silver compound is at least one selected from silver zeolite, silver phosphate, silver chloride, and silver carbonate.