Title:
DECONTAMINATING AGENT FOR, CONTAMINATED WITH HEXAVALENT CHROMIUM, SOIL/GROUNDWATER AND BOTTOM SEDIMENT, AND METHOD OF DECONTAMINATION THEREWITH
Document Type and Number:
WIPO Patent Application WO/2005/028133
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a decontaminating agent capable of efficiently and rapidly decontaminating soil, groundwater and bottom sediment having been contaminated with hexavalent chromium, and a method of decontamination therewith. [MEANS FOR SOLVING PROBLEMS] Provided means is characterized in that at least one of iron (0) and a ferrous salt and at least one microbe activator selected from the group consisting of yeast extract, inactive yeast, active yeast and peptone are added to soil, groundwater and bottom sediment having been contaminated with hexavalent chromium to thereby efficiently carry out chemical/biological reduction of hexavalent chromium, and that added iron reducing power is sustained for a prolonged period of time by the proliferation and activation of microbes capable of iron reduction.
Inventors:
CHANDRAGHATGI SHRIHARI (JP)
MAEDA SHINGO (JP)
NOGAWA KAORU (JP)
HIMI HIDEKI (JP)
MAEDA SHINGO (JP)
NOGAWA KAORU (JP)
HIMI HIDEKI (JP)
Application Number:
PCT/JP2004/011139
Publication Date:
March 31, 2005
Filing Date:
August 04, 2004
Export Citation:
Assignee:
ECOCYCLE CORP (JP)
CHANDRAGHATGI SHRIHARI (JP)
MAEDA SHINGO (JP)
NOGAWA KAORU (JP)
HIMI HIDEKI (JP)
CHANDRAGHATGI SHRIHARI (JP)
MAEDA SHINGO (JP)
NOGAWA KAORU (JP)
HIMI HIDEKI (JP)
International Classes:
B09C1/00; B09C1/02; B09C1/08; B09C1/10; C02F1/70; C02F3/00; C02F3/34; C02F11/00; C02F11/02; C09K17/02; C09K17/14; C09K17/32; C09K17/42; C09K101/00; (IPC1-7): B09C1/08; B09C1/10; C02F3/34; C02F11/02
Foreign References:
| JPH09225449A | 1997-09-02 | |||
| JP2003311258A | 2003-11-05 |
Attorney, Agent or Firm:
Kaiguchi, Muneaki (Shibuya 2-chome Shibuya-ku Tokyo, 02, JP)
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