WO2005100268A1 - ヒ素の無害化方法 - Google Patents
ヒ素の無害化方法 Download PDFInfo
- Publication number
- WO2005100268A1 WO2005100268A1 PCT/JP2005/006853 JP2005006853W WO2005100268A1 WO 2005100268 A1 WO2005100268 A1 WO 2005100268A1 JP 2005006853 W JP2005006853 W JP 2005006853W WO 2005100268 A1 WO2005100268 A1 WO 2005100268A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arsenic
- microorganism
- detoxifying
- compound
- harmless
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
Definitions
- the present invention relates to a method for detoxifying arsenic, in which microorganisms are brought into contact with a substance containing arsenic to detoxify the substance.
- the present inventors have repeated research and experiments on detoxification of arsenic by microorganisms. As a result, the existence of microorganisms capable of synthesizing arsenic in the object to be converted into arsenic compounds having relatively low harm was confirmed.
- the present invention is based on this new finding, and its object is to detoxify arsenic, which can detoxify arsenic-containing substances to be treated by microorganisms and also detoxify microorganisms themselves. It is to provide a method.
- a first characteristic configuration of the present invention includes a step of bringing a microorganism that is active in synthesizing an organic arsenic compound into contact with an object containing arsenic, and a step of placing the microorganism in a growth environment for the microorganism. And the step of synthesizing arsenic in the object to be treated into a harmless organic arsenic compound by the microorganism to detoxify the arsenic.
- an object to be treated containing arsenic can be rendered harmless.
- the microorganism itself can be rendered harmless, as will be described in detail later.
- the post-treatment of the microorganism used for the detoxification of the non-treated material is not required.
- the above steps can be performed simultaneously, if not necessarily in the order described. For example, if the arsenic in the object is incorporated into the microorganism by mixing the object and the microorganism in an environment suitable for the growth of the microorganism after mixing, the harmless organic arsenic compound is synthesized. Steps (b) and (c) are performed almost simultaneously after (a), or step (c) occurs after step (b). Alternatively, steps (a) to (c) are performed simultaneously if the untreated material is brought into contact with the microorganism in the growth environment.
- a second characteristic configuration of the present invention resides in that the harmless organic arsenic compound is arsenobetaine.
- arsenovetaine having a particularly small harm is preferable, as will be described in detail later. In extreme cases, it is possible to leave it as it is. Therefore, the subsequent treatment of the microorganisms becomes easier.
- a third characteristic configuration of the present invention resides in that the microorganism is zooplankton.
- the microorganism for detoxifying arsenic is an animal plankton, for example, an animal plankton such as a bryozoan, copoda, amphipod, krillina. Its practicality is relatively high, as it is relatively easily available in the waters near Japan.
- a fourth characteristic configuration of the present invention resides in that the zooplankton is a co-poder.
- zooplankton is a co-poder, and therefore relatively easy to obtain as described above.
- the organic arsenic compound synthesized by the co-poder is particularly harmless arsenobetaine, it can be left as it is in extreme cases. Therefore, the subsequent processing of the copier is further facilitated.
- the method of the present invention is, for example, a method of contacting various microorganisms to be treated, such as arsenic-containing soil and wastewater, to make them harmless.
- animal plantaton for example, marine animal blankton such as bryozoan, copoda, amphipod, krillida, is used as a microorganism.
- marine zooplankton were found to have an activity to synthesize organic arsenic compounds. These marine plankton are relatively easy to obtain, and can be collected, for example, in the waters near Japan.
- the experimental sample was prepared by dispensing 5 OmL of the seawater to be treated having an arsenic concentration of lmgZUl. Oppm) and adding 0.1 to 0.2 g of a co-poder thereto.
- the comparative sample was prepared by only collecting 50 mL of the seawater to be treated and without adding a copoder. Next, these experimental samples and comparative samples were placed in a co-op breeding environment.
- the experimental sample and the comparative sample were placed at a culture temperature of 25 ° C. After that, the arsenic concentration in seawater was measured in the experimental sample and the comparative sample. As for the experimental sample, the arsenic compound in the co-poder was analyzed. The arsenic concentration was measured using ICP (inductively coupled plasma) emission spectroscopy. An arsenic analysis system (ASA-2P manufactured by Shimadzu Corporation) was used for arsenic compound analysis.
- ICP inductively coupled plasma
- the arsenic concentration in seawater in the comparative sample was 0.8 ppm.
- the arsenic concentration in seawater in the experimental sample was reduced to 0.7 ppm. Therefore, it was found that about 0.1 ppm of arsenic was incorporated into the coda per day.
- arsenobetaine ((CH) AsCHCOO_), a harmless organic arsenic compound, was synthesized.
- Arsenobetaine is an organic arsenic compound that is practically universally contained in various fish and shellfish, and has extremely low toxicity.
- FIG. 2 shows the half-lethal dose (LD) of arsenic species in rats or mice in experimental examples.
- the figure shows the dose per 1 kg of body weight, which is estimated to be 50% fatal.
- Inorganic arsenic is about 4.5 mgZkg and inorganic arsenic (pentavalent) is about 14-18 mgZkg, while arsenovetaine (AB) is about 10, OOOmgZkg, and its toxicity is extremely low.
- the present invention can be used for detoxification of various kinds of treatment objects such as soil and drainage containing arsenic.
- FIG. 1 is a chart showing the results of an arsenic uptake experiment using a copoder
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hydrology & Water Resources (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006512308A JPWO2005100268A1 (ja) | 2004-04-15 | 2005-04-07 | ヒ素の無害化方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-120224 | 2004-04-15 | ||
JP2004120224 | 2004-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005100268A1 true WO2005100268A1 (ja) | 2005-10-27 |
Family
ID=35149910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/006853 WO2005100268A1 (ja) | 2004-04-15 | 2005-04-07 | ヒ素の無害化方法 |
Country Status (2)
Country | Link |
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JP (1) | JPWO2005100268A1 (ja) |
WO (1) | WO2005100268A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8133912B2 (en) | 2006-07-26 | 2012-03-13 | Nippon Sheet Glass Company, Limited | Methyl aquocobyrinic acid derivative, alkylation composition, and method for detoxifying a harmful compound by utilizing the composition |
US8618345B2 (en) | 2006-11-28 | 2013-12-31 | Nippon Sheet Glass Company, Limited | Method of detoxifying a methyl compound |
US8847000B2 (en) | 2006-07-26 | 2014-09-30 | Nippon Sheet Glass Company, Limited | Composition for alkylation and method for detoxifying a harmful compound by using the composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001275683A (ja) * | 2000-03-31 | 2001-10-09 | Taiheiyo Cement Corp | 重金属吸収能を有する形質転換生物体及びそれを用いた重金属類浄化方法 |
JP2003265186A (ja) * | 2002-03-19 | 2003-09-24 | Japan Science & Technology Corp | ヒ素耐性に関わる遺伝子 |
-
2005
- 2005-04-07 JP JP2006512308A patent/JPWO2005100268A1/ja active Pending
- 2005-04-07 WO PCT/JP2005/006853 patent/WO2005100268A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001275683A (ja) * | 2000-03-31 | 2001-10-09 | Taiheiyo Cement Corp | 重金属吸収能を有する形質転換生物体及びそれを用いた重金属類浄化方法 |
JP2003265186A (ja) * | 2002-03-19 | 2003-09-24 | Japan Science & Technology Corp | ヒ素耐性に関わる遺伝子 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8133912B2 (en) | 2006-07-26 | 2012-03-13 | Nippon Sheet Glass Company, Limited | Methyl aquocobyrinic acid derivative, alkylation composition, and method for detoxifying a harmful compound by utilizing the composition |
US8847000B2 (en) | 2006-07-26 | 2014-09-30 | Nippon Sheet Glass Company, Limited | Composition for alkylation and method for detoxifying a harmful compound by using the composition |
US8618345B2 (en) | 2006-11-28 | 2013-12-31 | Nippon Sheet Glass Company, Limited | Method of detoxifying a methyl compound |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005100268A1 (ja) | 2008-03-06 |
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