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Title:
ADSORBENT FOR SEPARATING NICKEL FROM COBALT OR NICKEL AND COBALT FROM ALUMINUM AND SEPARATION METHOD THEREFOR
Document Type and Number:
Japanese Patent JPH07112128
Kind Code:
A
Abstract:

PURPOSE: To obtain an adsorbent for adsorbing and separating Ni, Co and Al from an aq. soln. by using chemically modified chitosan obtd. by substituting a specified polyaminocarboxyl group for one of the H atoms of an amino group bonding to a C atom at the 2-position of chitosan.

CONSTITUTION: Chemically modified chitosan obtd. by substituting a polyaminocarboxyl group represented by formula I or II for one of the H atoms of an amino group bonding to a C atom at the 2-position of chitosan is used as the objective adsorbent. When this adsorbent is used, Ni, Co and Al are separately and selectively adsorbed. In the formula I, each of R1-R3 is a 1-3C n-alkylene and each of R4-R7 is a 1-4C n-alkylene. In the formula II, each of R8 and R9 is a 1-3C n-alkylene and each of R11-R12 is a 1-4C n-alkylene.


Inventors:
INOUE KATSUTOSHI
OWATARI KEISUKE
YOSHIZUKA KAZUHARU
NIIHARA TAKASHI
TSUYAMA HIROMI
Application Number:
JP1994000200155
Publication Date:
May 02, 1995
Filing Date:
August 02, 1994
Export Citation:
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Assignee:
CATALYSTS & CHEM IND CO
International Classes:
C08B37/08; B01D15/00; B01J20/22; C01G53/00; C09K3/00; C22B21/00; C22B23/00; (IPC1-7): B01J20/22; B01D15/00; C01G53/00; C08B37/08; C22B21/00; C22B23/00
Attorney, Agent or Firm:
友松 英爾 (外1名)