Title:
ADSORBENT AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2004/096433
Kind Code:
A1
Abstract:
An arsenic adsorbent which is superior in the ability to adsorb boron, arsenic, and fluorine to conventional adsorbents, effectively functions even when the concentrations of these are low, and has a long life. Maintenance of the adsorbent is easy, and adsorbent or resin components do not dissolve away. The adsorbent for boron, arsenic, and fluorine is an arsenic adsorbent comprising a hydroxide and/or hydrous oxide of a rare earth element and a water-resistant polymer resin with which the surface of the hydroxide and/or hydrous oxide is coated, and characterized in that the hydroxide and/or hydrous oxide has a central void and micropores surrounding the central void and that the polymer resin with which the surface of the hydroxide and/or hydrous oxide is coated constitutes a porous skin layer.
Inventors:
KUROSAWA HIROAKI (JP)
ITO HARUHIKO (JP)
YOTSUMOTO TOSHIO (JP)
ITO HARUHIKO (JP)
YOTSUMOTO TOSHIO (JP)
Application Number:
PCT/JP2004/006091
Publication Date:
November 11, 2004
Filing Date:
April 27, 2004
Export Citation:
Assignee:
SHIN NIHON SALT CO LTD (JP)
KUROSAWA HIROAKI (JP)
ITO HARUHIKO (JP)
YOTSUMOTO TOSHIO (JP)
KUROSAWA HIROAKI (JP)
ITO HARUHIKO (JP)
YOTSUMOTO TOSHIO (JP)
International Classes:
B01J20/06; B01J20/26; C01F17/235; C02F1/28; (IPC1-7): B01J20/06; B01J20/30; C08L101/00; C08L27/12; C08L29/14; C08K3/22
Foreign References:
| JPS60153940A | 1985-08-13 | |||
| JPS61192340A | 1986-08-26 | |||
| JPS61187931A | 1986-08-21 | |||
| JPS6012190A | 1985-01-22 | |||
| JPH02102734A | 1990-04-16 | |||
| JP2004050069A | 2004-02-19 | |||
| JP2004057870A | 2004-02-26 |
Attorney, Agent or Firm:
Sakai, Masami (13-5 Akasaka 4-chom, Minato-ku Tokyo 52, JP)
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