Title:
ADSORBENT FOR RADIOACTIVE ANTIMONY, RADIOACTIVE IODINE, AND RADIOACTIVE RUTHENIUM, AND METHOD OF PROCESSING RADIOACTIVE WASTE LIQUID USING SAID ADSORBENT
Document Type and Number:
WIPO Patent Application WO/2017/110485
Kind Code:
A1
Abstract:
Provided are an adsorbent and a method of processing radioactive waste liquid with which radioactive antimony, radioactive iodine, and radioactive ruthenium can be removed simply with a high removal efficiency. The adsorbent includes cerium hydroxide (IV) in the form of particles or powder having a particle size at least equal to 250 µm and at most equal to 1200 µm, and is capable of simultaneously adsorbing radioactive antimony, radioactive iodine and radioactive ruthenium. The method of processing a radioactive waste liquid includes causing a radioactive waste liquid containing radioactive antimony, radioactive iodine and radioactive ruthenium to pass through an adsorption tower filled with said adsorbent in a layer having a height of at least 10 cm and at most 300 cm, with a water-flow linear flow velocity (LV) at least equal to 1 m/h and at most equal to 40 m/h, and a space velocity (SV) at most equal to 200 h-1, to cause the radioactive antimony, radioactive iodine and radioactive ruthenium to be adsorbed by the adsorbent.
Inventors:
SAKUMA TAKASHI (JP)
KOMATSU MAKOTO (JP)
IZUMI TAKESHI (JP)
MIYABE SHINSUKE (JP)
KINOSE YUTAKA (JP)
SATOU KIYOSHI (JP)
KOZASU KENTA (JP)
TOKUTAKE MARI (JP)
SAKAMOTO TAKESHI (JP)
SUGIHARA KAORI (JP)
KOMATSU MAKOTO (JP)
IZUMI TAKESHI (JP)
MIYABE SHINSUKE (JP)
KINOSE YUTAKA (JP)
SATOU KIYOSHI (JP)
KOZASU KENTA (JP)
TOKUTAKE MARI (JP)
SAKAMOTO TAKESHI (JP)
SUGIHARA KAORI (JP)
Application Number:
PCT/JP2016/086485
Publication Date:
June 29, 2017
Filing Date:
December 08, 2016
Export Citation:
Assignee:
EBARA CORP (JP)
NIPPON CHEMICAL IND (JP)
NIPPON CHEMICAL IND (JP)
International Classes:
G21F9/12; B01J20/06; B01J20/28; C01F17/235
Foreign References:
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| JPS60161598A | 1985-08-23 | |||
| JPS6019035A | 1985-01-31 | |||
| JPS50140799A | 1975-11-12 | |||
| JP2015505718A | 2015-02-26 | |||
| JP2013241312A | 2013-12-05 | |||
| JP2015045606A | 2015-03-12 | |||
| JP2015181972A | 2015-10-22 | |||
| JP2014238407A | 2014-12-18 | |||
| JP2013104727A | 2013-05-30 | |||
| JP2015059852A | 2015-03-30 | |||
| JPS61187931A | 1986-08-21 | |||
| JP5793230B1 | 2015-10-14 | |||
| JP5793231B1 | 2015-10-14 |
Other References:
YUKO KOMATSUZAKI ET AL.: "N37 Development of wide-varied adsorbents for one through purification of multi-nuclides contaminated water (2) Sb and iodate ions absorption characteristics of an activated carbon impregnated with ceria", ABSTRACTS (CD-ROM) OF ''2013 FALL MEETING'' OF THE ATOMIC ENERGY SOCIETY OF JAPAN, ATOMIC ENERGY SOCIETY OF JAPAN, 2013, pages 648
See also references of EP 3396677A4
See also references of EP 3396677A4
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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