Title:
六価クロムに汚染された土壌・地下水、及び底質の浄化剤と浄化方法
Document Type and Number:
Japanese Patent JP3564574
Kind Code:
B1
Abstract:
It is an objective of the present invention to provide a decontaminant capable of efficiently and rapidly decontaminating soil, groundwater or sediment contaminated with hexavalent chromium, and a decontamination method utilizing the same. By adding at least one of iron (0) and ferrous iron, and a microbial biostimulant of at least one member selected from the group consisting of yeast extract, inactive yeast, active yeast and peptone to soil, groundwater or sediment contaminated with hexavalent chromium. Hexavalent chromium is chemically and biologically reduced efficiently, and iron reducing microorganisms are propagated and activated to sustain reducing power of the added iron over a long period of time.
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Inventors:
Shri Hari Chandra Gatogi
Shingo Maeda
Kaoru Nogawa
Hideki Himi
Shingo Maeda
Kaoru Nogawa
Hideki Himi
Application Number:
JP2003332352A
Publication Date:
September 15, 2004
Filing Date:
September 24, 2003
Export Citation:
Assignee:
Eco Cycle Co., Ltd.
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): B09C1/10; B09C1/02; B09C1/08; C02F1/70; C02F3/00; C02F3/34; C02F11/00; C02F11/02; C09K17/02; C09K17/14; C09K17/32; C09K17/42
Domestic Patent References:
| JP2003251331A | ||||
| JP2003211145A | ||||
| JP2001205248A | ||||
| JP7136632A | ||||
| JP11263926A | ||||
| JP11262751A | ||||
| JP9225449A |
Attorney, Agent or Firm:
Aperture Muneaki