Title:
FLOCCULANT, TRANSITION METAL SEPARATION METHOD, AND TRANSITION METAL SEPARATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/030218
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve the separation rate for specific transition metals. Provided is a flocculant that forms transition metal ions into aggregates by coordinate bonding, wherein the flocculant has a polymer with an amino group, and dicarboxylic acid or a dicarboxylate. Further provided is a transition metal separation method for aggregating and separating specific transition metal ions from an aqueous solution in which transition metal ions of a plurality of types are intermixed, wherein the method comprises the following: a first step in which, after a polymer with an amino group is added to the aqueous solution, dicarboxylic acid or a dicarboxylate is added thereto to form an aggregate; and a second step in which the aggregate and a dissolved component are separated from the aqueous solution.
Inventors:
SASAKI HIROSHI (JP)
YAMAMOTO HIROKI (JP)
YASUDA TOSHIO (JP)
YAMAMOTO HIROKI (JP)
YASUDA TOSHIO (JP)
Application Number:
PCT/JP2012/071124
Publication Date:
February 27, 2014
Filing Date:
August 22, 2012
Export Citation:
Assignee:
HITACHI LTD (JP)
SASAKI HIROSHI (JP)
YAMAMOTO HIROKI (JP)
YASUDA TOSHIO (JP)
SASAKI HIROSHI (JP)
YAMAMOTO HIROKI (JP)
YASUDA TOSHIO (JP)
International Classes:
C02F1/62; C22B59/00; C02F1/64; C22B3/24
Foreign References:
| JP2011132573A | 2011-07-07 | |||
| JP2012030139A | 2012-02-16 | |||
| JP2011088047A | 2011-05-06 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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