Title:
METHOD FOR DECONTAMINATING SOIL CONTAMINATED WITH HEAVY METAL
Document Type and Number:
Japanese Patent JP2006255515
Kind Code:
A
Abstract:
To provide a method for decontaminating the soil contaminated with a heavy metal, in which sorting work and the work of treating waste water are done efficiently and even a contaminated soil particle, which is discarded in the conventional method, can be decontaminated.
A heavy metal collecting fibrous material produced by a radiation graft polymerization method is mixed with the soil contaminated with the heavy metal and an aqueous medium and then recovered. The heavy metal adsorbed on the heavy metal collecting fibrous material is eluted and cleaned by using a dilute acid, for example, dilute hydrochloric acid to regenerate the heavy metal collecting fibrous material.
Inventors:
SUGO TAKANOBU
MIHASHI SHUICHI
KATAOKA MASAHIRO
HAYAMA TAKAYOSHI
MIHASHI SHUICHI
KATAOKA MASAHIRO
HAYAMA TAKAYOSHI
Application Number:
JP2005072981A
Publication Date:
September 28, 2006
Filing Date:
March 15, 2005
Export Citation:
Assignee:
NIPPO CORP KK
KANKYO JOKA KENKYUSHO KK
KANKYO JOKA KENKYUSHO KK
International Classes:
B09C1/02; B01J20/26; B01J20/34; B01J45/00; B09C1/08; C02F1/28; C02F1/42
Domestic Patent References:
| JP2002045708A | 2002-02-12 | |||
| JP2004089809A | 2004-03-25 | |||
| JP2004351288A | 2004-12-16 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai
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