WO2005001066A1 - 新規分解菌及びそれを用いた有機化合物の分解処理方法 - Google Patents
新規分解菌及びそれを用いた有機化合物の分解処理方法 Download PDFInfo
- Publication number
- WO2005001066A1 WO2005001066A1 PCT/JP2004/008529 JP2004008529W WO2005001066A1 WO 2005001066 A1 WO2005001066 A1 WO 2005001066A1 JP 2004008529 W JP2004008529 W JP 2004008529W WO 2005001066 A1 WO2005001066 A1 WO 2005001066A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formaldehyde
- methanol
- phenol
- strain
- microorganism
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
- C12N1/16—Yeasts; Culture media therefor
- C12N1/165—Yeast isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/645—Fungi ; Processes using fungi
- C12R2001/72—Candida
Definitions
- the present invention relates to a biological decomposition treatment of an organic compound such as cresol, phenol, formaldehyde, and methanol.
- Cresol, phenol, formaldehyde, and methanol are useful chemical raw materials, and are used in many applications as raw materials for producing resins, adhesives, plywood, laminates, and the like.
- wastewater containing cresol, phenol, formaldehyde, and methanol is often generated during their production.
- methods for treating such wastewater include a dilution method, an incineration method, a distillation recovery method, and an activated sludge method.
- the activated sludge is treated as a biological decomposition treatment.
- the activated sludge group used in conventional activated sludge treatment has a high biodegradability such as cresol, phenol, honolemaldehyde, methanol, etc. with a high concentration exceeding 20 mg / L.
- Attempts to treat wastewater containing high concentrations of organic compounds are not suitable for treating wastewater containing high concentrations of the above organic compounds, because there is a risk of killing useful microorganisms in sludge.
- Patent Document 1 discloses a pseudomonas' Sepacia KK01 strain capable of decomposing a waste liquid containing a mixture of phenol and tarezol. The decomposition method used is disclosed. However, it cannot treat wastewater containing honolealdehyde and methanol.
- Patent Document 2 discloses that a phenolic compound can be decomposed even under conditions including a high concentration of inorganic salt.
- a method for decomposing phenolic compounds using microorganisms belonging to the genus Candida has been developed. It is shown. Only phenolic compounds can be treated in this way.
- phenol, cresol, formaldehyde, methanol and the like are biorefractory organic compounds having bactericidal properties, can survive in a waste liquid in which these organic compounds are present, and decompose these organic compounds. It is not found in strains that have the ability, or in the range of currently known strains.
- Patent Document 1 JP-A-8-80188
- Patent Document 2 JP-A-8-24892
- the present invention provides a bactericidal action such as high concentrations of cresol, phenol, formaldehyde, and methanol, can survive even a waste liquid containing an organic compound that is hardly degradable, and It is an object of the present invention to provide a novel microorganism capable of efficiently decomposing water, and to provide a method for efficiently decomposing waste water containing the above-mentioned organic compound which is bactericidal and hard to decompose by using the microorganism.
- the present invention relates to a process for purifying wastewater containing bactericidal, biodegradable organic compounds, such as cresol, phenol, formaldehyde, and methanol, using microorganisms.
- the present inventors have found a novel strain capable of efficiently decomposing one or more of the above-mentioned organic compounds at a high concentration among microorganisms living in soil and water in a water storage tank, and completed the present invention.
- bactericidal, biodegradable organic compounds such as cresol, phenol, formaldehyde, and methanol
- the present invention provides a bactericidal organism using one or more microorganisms selected from the group consisting of Pseudomonas sp., Microorganisms belonging to the genus Methylobacterium radiotolerans, and microorganisms belonging to the genus Candida maltosa.
- a method for decomposing a decomposable organic compound is provided.
- the present invention provides a novel microorganism SB0301 strain (FERM P_19681) suitable for the above method, which is capable of decomposing organic compounds such as (1) Pseudomonas sp., Such as cresol, phenol, formaldehyde and methanol. , (2) belonging to the genus Methylobacterium radiot olerans, capable of resolving organic compounds such as formaldehyde and methanol A new microorganism strain SB0202 (FERM P-19301) having the following characteristics: and (3) a new microorganism strain SB0201 (FERM P.M. P— 19300).
- organic compounds such as (1) Pseudomonas sp., Such as cresol, phenol, formaldehyde and methanol.
- (2) belonging to the genus Methylobacterium radiot olerans capable of resolving organic compounds such as formaldehyde and methanol
- a new microorganism strain SB0202 (FERM
- wastewater containing bactericidal organic hardly decomposable organic compounds such as cresol, phenol, honolemunorehdehyde, and methanol at high concentrations exceeding 20 mg / L, respectively, It can be efficiently decomposed using a novel microorganism.
- the method for decomposing the organic compound of the present invention comprises one or two selected from the group consisting of Pseudomonas sp., Microorganisms belonging to the genus Methylobacterium radiotolerans and microorganisms belonging to the genus Candida maltosa.
- the biodegradable organic compound having bactericidal properties is decomposed using the above microorganisms.
- the biodegradable organic compound having bactericidal properties is selected from the group consisting of phenolic compounds such as phenol, cresol, salicylic acid, and hydroxybenzoic acid, formaldehyde, methanol, and formic acid.
- phenolic compounds such as phenol, cresol, salicylic acid, and hydroxybenzoic acid, formaldehyde, methanol, and formic acid.
- One or more compounds are preferable.
- the microorganism used in the method of the present invention is preferably selected from Pseudomonas sp.
- Pseudomonas sp. Is preferably a novel microorganism strain SB0301 (FERM P-19681) (hereinafter referred to as SB0301 strain).
- one or more organic compounds selected from the group consisting of cresol, phenol, formaldehyde and methanol are subjected to degradation treatment using the strain SB0301.
- the microorganism used in the method of the present invention is preferably selected from microorganisms belonging to the genus Methylobacterium radiotolerans.
- the microorganism belonging to the genus Methylobacterium radiotolerans is a novel microorganism SB 0202 strain (FERM P-19301) (hereinafter referred to as SB0202 strain).
- Formaldehyde and / or methanol are preferably decomposed using the SB0202 strain.
- the microorganism used in the method of the present invention is preferably selected from microorganisms belonging to the genus Candida maltosa.
- the microorganism belonging to the genus Candida maltosa includes a novel microorganism SB0201 strain (FER
- one or more selected from the group consisting of phenol, formaldehyde and methanol is degraded using the SB0201 strain.
- the microorganism used in the method of the present invention is a novel microorganism SB0301 strain (FERM P-196).
- a novel microorganism SB0202 strain (FERM P-19301) and a novel microorganism SB0201 strain (FERM P-19300) are preferably used.
- novel microorganism SB0301 of the present invention is used as the microorganism of Pseudomonas sp. It is preferable to use them.
- the method of the treatment method of the present invention may be performed by a known activated sludge method, which is not particularly limited, or may be performed by a bioreactor method.
- a method suitable for the purpose can be appropriately selected.
- an aqueous solution containing the organic compound is placed in a water tank in which microorganisms live.
- the sprinkling filter method, the immersion filter method, and the cell fixing method are used to immobilize microorganisms.
- an aqueous solution (waste liquid) containing an organic compound By bringing an aqueous solution (waste liquid) containing an organic compound into contact with the substrate, it is possible to decompose the organic compound.
- the novel microorganism SB0301 may be used alone in decomposing organic compounds, or may be a known microorganism used in a conventional activated sludge method or the like. It may be used in combination with Z or another novel microorganism of the present invention.
- the object to be treated by the treatment method of the present invention is a waste liquid containing the above-mentioned organic compound mainly generated in a manufacturing process of a chemical industry or the like, but the present invention is not limited to this, and an aqueous liquid containing the above-mentioned organic compound is used. If so,
- the decomposition temperature of the above organic compound is generally in the range of 1040 ° C, preferably 1535 ° C.
- the pH during the treatment is generally in the range 6.0-9.0, preferably 6.5-8.5.
- the decomposition treatment is preferably performed under aerobic conditions. Prior to the decomposition process, various pretreatments may be performed as necessary.
- m-talesole in an aqueous liquid containing 1,400 mg / L concentration of m-talesole alone in 7 days Can decompose 99% or more, and similarly, decompose these organic compounds in aqueous liquid containing 1,200 mg / L concentration of p-talesol or 0-cresol alone in 99 days or more. I can do it.
- phenol in an aqueous liquid containing 1600 mg / L of phenol alone can be decomposed by 95% or more in one day, and an aqueous liquid containing 400 mg / L of formaldehyde alone It can decompose more than 99% of formaldehyde in 2 days and about 55% of methanol in aqueous liquid containing 1,500 mg / L of methanol alone in 7 days.
- Example 1 99% or more of the phenol and formaldehyde in the aqueous liquid containing phenol, formaldehyde and methanol at a concentration of 25 OmgZL each could be decomposed in 99 days or more in 2 days. In about 20%.
- Example 2 phenol and formaldehyde in an aqueous liquid containing phenol, formaldehyde and methanol at a concentration of 250 mg ZL each, and m, p, o-talesole at a concentration of 25 mg ZL each were used for 2 days.
- Can decompose more than 99% in 90% can decompose m, p_cresol more than 90% in 2 days, and decompose o-talesol in about 30% in 7 days
- the microorganism belonging to the genus Methylobacterium radiotolerans includes a novel microorganism SB02 of the present invention.
- the method of the treatment method of the present invention is not particularly limited, and it may be carried out by a known activated sludge method or by a bioreactor method. S can.
- an aqueous liquid (waste liquid) containing a biodegradable organic compound such as formaldehyde and methanol is put into a water tank where microorganisms inhabit and brought into contact with the microorganisms to formaldehyde and methanol.
- a biodegradable organic compound such as formaldehyde and methanol
- the microorganism is immobilized on a carrier, and an aqueous liquid containing a biodegradable organic compound such as formaldehyde and methanol therein. (Waste liquid) can be decomposed and decomposed by contact.
- a biodegradable organic compound such as formaldehyde and methanol therein.
- the novel microorganism SB0202 strain may be used alone in the decomposition treatment of an aqueous liquid (waste liquid) containing an organic compound, or may be used in a conventional activated sludge method or the like. It may be used in combination with certain known microorganisms and / or other novel microorganisms of the present invention.
- the object to be treated by the treatment method of the present invention is a waste liquid mainly containing biodegradable organic compounds such as formaldehyde and methanol generated in the production process of the chemical industry, but the present invention is not limited thereto. Any aqueous solution containing the above organic compound may be used.
- the treatment temperature during the decomposition treatment of the organic compound is generally in the range of 15 to 40 ° C, preferably 20 to 35 ° C.
- the pH is generally in the range of 5.5-8.0, preferably 6.0-7.5.
- the decomposition treatment is preferably performed under aerobic conditions.
- the concentration of 6,000 mg / L Formaldehyde in an aqueous liquid containing formaldehyde alone can be degraded by about 87% or more in 7 days, and similarly, methanol in an aqueous liquid containing 20,000 mg / L methanol alone can be decomposed in 10 days. It can decompose almost 99% or more.
- formaldehyde and methanol in an aqueous liquid containing formaldehyde and methanol at a concentration of 5000 mg / L can be decomposed by about 99% or more in 3 days.
- the novel microorganism SB0202 strain of the present invention does not have the ability to degrade phenol, but has the resistance (resistance) to phenol. Therefore, even in the presence of phenol, it contains formaldehyde and methanol. Can be decomposed. In the presence of 2000 mg / L of phenol, without dying, honoremuanoledaldehyde 2000 mg / L in 98 days. / 0 or more can be decomposed.
- the microorganism belonging to the genus Candida maltosa includes the novel microorganism SB0201 strain of the present invention. It is preferable to use them.
- the method of the treatment method of the present invention may be performed by a known activated sludge method, which is not particularly limited, or may be performed by a bioreactor method.
- a method suitable for the purpose can be appropriately selected.
- an aqueous solution containing the organic compound is placed in an aquarium in which microorganisms live.
- the microorganisms are immobilized, and an aqueous solution containing an organic compound (waste liquid) is brought into contact with the microorganism to fix the aqueous liquid (waste liquid).
- the above organic compounds in ()) can be decomposed.
- the novel microorganism SB0201 may be used alone or used in a conventional activated sludge method or the like in decomposing organic compounds contained in an aqueous liquid (waste liquid).
- aqueous liquid waste liquid
- Known microorganisms and / or other novel microorganisms of the present invention May be used in combination.
- the object to be treated by the treatment method of the present invention is a waste liquid containing the above-mentioned organic compound, which is mainly generated in a manufacturing process of a chemical industry or the like, but the present invention is not limited to this, and an aqueous liquid containing the above-mentioned organic compound is used. If so,
- the decomposition temperature of the above organic compound is generally in the range of 1540 ° C, preferably 2035 ° C.
- the pH during the treatment is generally in the range 5.5-8.0, preferably 6.0-7.5.
- the decomposition treatment is preferably performed under aerobic conditions.
- phenol and formaldehyde in an aqueous liquid containing 750 mg / L each of phenol, formaldehyde and methanol can be decomposed by almost 99% or more in two days, and methanol can be decomposed in 40 days by 40 days. % Can be decomposed.
- Phenol and formaldehyde in an aqueous liquid containing phenol and formaldehyde at a concentration of 500 mg / L can be decomposed almost 99% or more in one day, and phenol and formaldehyde at a concentration of 750 mg / L each. It can decompose formaldehyde in an aqueous liquid containing phenol in almost one day and phenol in almost two days.
- two or more strains selected from the strains SB0301, SB0202, and SB0201 may be used in combination as the microorganism.
- organic compounds can be decomposed more efficiently.
- phenol and formaldehyde in an aqueous liquid containing phenol, formaldehyde and methanol at a concentration of 100 mgZL each can be decomposed by 99% or more in 4 days.
- These new microorganisms SB0202 strain and SB0201 strain By using a combination of phenol, formaldehyde and methanol, phenol, formaldehyde and methanol in an aqueous liquid containing phenol, formaldehyde and methanol can be efficiently decomposed.
- m, p-talesole can be degraded by 95% or more in 1 day
- o-cresol can be degraded by 95% or more in 2 days
- Methanol can be degraded by more than 99% in 3 days.
- the first novel microorganism of the present invention is Pseudomonas sp., A novel microorganism SB0301 strain (FERM P-19681) (FERM P-19681) capable of decomposing organic compounds such as cresol, phenol, formaldehyde and methanol. This is referred to as the SB0301 strain).
- the second novel microorganism of the present invention belongs to the genus Methylobacterium radiotolerans, and is a novel microorganism SB0202 strain (FERM P-19301) (hereinafter referred to as SB0202) having the ability to degrade organic compounds such as formaldehyde and methanol. Strains).
- the third novel microorganism of the present invention belongs to the genus Candida maltosa, and has the ability to degrade organic compounds such as phenol, formaldehyde and methanol.
- the microorganism SB0201 (FERM P-19300 ) (Hereinafter referred to as SB0201 strain).
- the SB0301 strain which is the first novel microorganism of the present invention, is Pseudomonas sp., And is characterized by being capable of decomposing organic compounds such as cresol, phenol, formaldehyde, and methanol.
- the novel microorganism SB0301 strain of the present invention is Pseudomonas sp., And is isolated as follows. First, soil or water in a water tank is sampled, and it is resistant to high concentrations of cresol, phenol, formaldehyde, and methanol among microorganisms present in it, and at least one or more of these compounds Microorganisms capable of decomposing more than one were searched. Microorganisms capable of decomposing and assimilating the high concentrations of cresol, phenol, formaldehyde, and methanol found thereby were isolated.
- Pseudomonas sp. Strain KK01 of Patent Document 1 is Burkholderia sp. (Betaproteobacteria) belonging to the class B Betaproteobacteria.
- novel microorganism SB0301 strain of the present invention isolated as described above is a Pseudomonas sp. Are different bacteria belonging to completely different taxa.
- the novel microorganism of the present invention has the microbiological properties shown in Tables 1 and 2 below.
- the applicant assigned the identification number of SB0301 to this new microorganism and deposited the strain of this microorganism in Japan with the National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary (Microorganism Deposit Number FERM P-1 9681). Subsequently, an application for transferring this original deposit to a deposit under the Budapest Treaty was filed with the International Depository Authority, National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary ( ⁇ Tsukuba-Higashi, Ibaraki, Japan 305-8566, Japan). Address 1 Central No. 6) and assigned International Deposit Number FE RM BP-10035.
- the nutrient source of the medium used for culturing the SB0301 bacterium may be any nutrient that is necessary for the growth of normal microorganisms and can be assimilated by the bacterium, such as a carbon source or a nitrogen source. And inorganic salts.
- the carbon source organic compounds such as cresol, phenol, formaldehyde, and methanol, and natural products such as yeast extract and fish extract can be used.
- the nitrogen source there can be used ammonium salts such as ammonium sulfate, nitrates such as sodium nitrate, and natural products such as leptone.
- potassium salt, calcium salt, sodium salt, magnesium salt, iron salt, manganese salt, phosphate and the like can be used as the inorganic component.
- the culture conditions of the SB0301 strain are as follows. Culture temperature is 10-40 ° C, preferably
- the novel microorganism SB0301 strain of the present invention has the ability to degrade organic compounds such as cresol, phenol, formaldehyde, and methanol. In particular, cresol, and Excellent resolution for phenol.
- the SB0301 strain can also be treated with wastewater containing cresol, phenol, formanolaldehyde, methanol, or the like alone, or with wastewater containing a mixture of a plurality of types.
- the concentration of the organic compound contained in the aqueous liquid which can be assimilated by the SB0301 strain, varies depending on the compound.
- the concentration is generally 2,000 mg / L or less, and preferably in the range of 200 1,500 mg ZL. This concentration range corresponds to about 10 to 75 times the concentration that can be treated by the conventional activated sludge group.
- the SB0202 strain which is the second novel microorganism of the present invention, belongs to the genus Methylobacterium radi otolerans and is characterized by being capable of degrading organic compounds such as formaldehyde and methanol.
- the novel microorganism SB0202 strain of the present invention belongs to the genus Methylobacterium radiotolerans.
- the SB0202 strain was isolated as follows. First, water from soil and water tanks is sampled, and high-concentration biodegradable organic compounds, such as formaldehyde and methanol, that have a high bactericidal action, are used to decompose the microorganisms that exist in the water. Microorganisms that could be found were searched, and the found microorganisms were isolated independently.
- Microorganisms useful in the present invention have the microbiological properties shown in Tables 3 and 4 below.
- the applicant of the present invention has attached an identification number of “SB0202” to this microorganism, and deposited the microorganism in Japan at the Patent Organism Depositary of the National Institute of Advanced Industrial Science and Technology (Microorganism Deposit Number FERM P-1 19301). Subsequently, an application for transferring this original deposit to a deposit under the Budapest Treaty was filed with the International Depository Authority, National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary (Patent 305-85 66 Tsukuba East, Ibaraki, Japan 1-chome 1) Address No. 1 Central No. 6) and assigned International Deposit Number F ERM BP-10034.
- the nutrient source of the medium used for culturing the SB0202 bacterium of the present invention may be any carbon source or nitrogen source as long as it is necessary for normal growth of microorganisms and can be assimilated by the bacterium. And inorganic salts.
- the carbon source organic compounds such as honolemaldehyde, formic acid, methanol, and p-hydroxybenzoic acid, and natural products such as yeast extract can be used.
- the nitrogen source ammonium salts such as ammonium sulfate, nitrates such as sodium nitrate, and natural substances such as peptone can be used.
- potassium salts, calcium salts, sodium salts, magnesium salts, iron salts, manganese salts, phosphates and the like can be used.
- the culture conditions of the SB0202 strain are as follows.
- the culture temperature is 15-40 ° C, preferably 20-35. C, ⁇ ⁇ 5.5-8.0, preferably 6.6.0-7.5, cultivation on aerobic stirrup
- the novel microorganism SB0202 strain of the present invention has the ability to degrade organic compounds such as formaldehyde and methanol.
- these organic compounds are biodegradable compounds having a bactericidal action, and the SB0202 strain can degrade salicylic acid, hydroxybenzoic acid, formic acid and the like in addition to the above compounds.
- the SB0202 strain can also decompose organic compounds in wastewater containing formaldehyde and methanol alone, or in wastewater in which a plurality of species are mixed.
- the SB0202 strain contains formaldehyde, methanol, etc. in an aqueous liquid containing bactericidal, biodegradable organic compounds such as formaldehyde and methanol at a concentration of 25,000 mg / L or less, and preferably at a concentration of 2005, OOOmgZL. Biodegradable organic compounds can be decomposed and utilized. This concentration range corresponds to about 5-500 times the concentration that can be treated by the conventional activated sludge group.
- the SB0202 strain does not have the ability to degrade phenol, but has resistance (resistance) to phenol, and is therefore a waste solution containing phenol and containing formaldehyde and / or methanol. Even so, organic compounds such as formaldehyde and methanol can be efficiently decomposed.
- the SB0201 strain which is the third novel microorganism of the present invention, belongs to the genus Candida maltosa, and is characterized by having the ability to degrade organic compounds such as phenol, formaldehyde, and methanol.
- the novel microorganism SB0201 strain of the present invention is a kind of yeast belonging to the genus Candida maltosa, and is isolated as follows. First, water from soil and water storage tanks is sampled, and it is resistant to high concentrations of formaldehyde, phenol, and methanol among microorganisms present in the soil, and two or three of these compounds are removed. We searched for microorganisms that could be used for decomposition. Microorganisms capable of assimilating the high concentrations of formaldehyde, phenol, and methanol that were found were isolated.
- novel microorganism SB0201 strain of the present invention differs from the microorganism described in Patent Document 2 in that it belongs to the genus Candida paratosilosis, whereas it belongs to the genus Candida maltosa. I have.
- the novel microorganism of the present invention has the microbiological properties shown in Tables 5 and 6 below.
- the applicant assigned the identification number of SB0201 to this novel microorganism, and deposited the strain of this microorganism in Japan with the National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary (Microorganism Deposit No. FERM P-19300). Subsequently, an application for transferring this original deposit to a deposit under the Budapest Treaty was filed with the International Depository Authority, National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary ( ⁇ Tsukuba-Higashi, Ibaraki, Japan 305-8566, Japan). Address No. 1 Central No. 6) and assigned International Deposit Number FE RM BP-10033.
- the nutrient source of the medium used for culturing the SB0201 bacterium may be any nutrient that is necessary for the growth of normal microorganisms and can be assimilated by the bacterium, such a carbon source or nitrogen source. And inorganic salts.
- the carbon source for example, organic compounds such as honolemu- norehdehyde, formic acid, methanolenole, phenol, creso-nole, ⁇ -hydroxybenzoic acid, and natural products such as yeast extract can be used.
- Ammonia salts such as ammonium sulfate, nitrates such as sodium nitrate, and natural products such as peptone can be used as the nitrogen source.
- potassium salts, calcium salts, sodium salts, magnesium salts, iron salts, manganese salts, phosphates and the like can be used.
- Culture conditions for the SB0201 strain are as follows. Culture temperature is 15-40 ° C, preferably 20—35. C. Culture in aerobic stirrer at ⁇ 5.5-8.0, preferably at 60.6-7.5.
- the novel microorganism SB0201 strain of the present invention has the ability to degrade organic compounds such as phenol, formaldehyde, and methanol. In particular, it has excellent resolution for phenol and formaldehyde.
- these organic compounds are bactericidal and biodegradable, and the SB0201 strain can degrade other compounds such as cresol, hydroxybenzoic acid, and formic acid.
- the SB0201 strain can be treated with wastewater containing solely phenol, honolemunorrehide, methanol, or the like, or with wastewater containing a mixture of a plurality of types.
- the concentration of the organic compound contained in the aqueous liquid which can be assimilated by the SB0201 strain, varies depending on the compound.
- the concentration is generally 5,000 mg / L or less, and preferably in the range of 200 2,000 mg ZL. This concentration range corresponds to about 5 to 100 times the concentration that can be treated by the conventional activated sludge group.
- Example 7 In the same manner as in Example 1, the components shown in Table 7 were dissolved in 80 mL of distilled water, sterilized by autoclaving at 121 ° C for 15 minutes, and cooled to room temperature to prepare an inorganic salt base medium. Produced.
- a 500 mL shake flask was charged with 80 mL of the above-mentioned inorganic base main culture medium, and contained phenol, formaldehyde and methanol at a concentration of 2,500 mg / L each as the organic compound, and each of o, m, and p_tarezol. 10 mL of an aqueous solution containing 250 mg / L was added. Then, 10 mL of the same SB0301 bacterial solution as in Example 1 was added thereto. By mixing these three types, the concentration of each of phenol, formaldehyde and methanol in the medium was adjusted to 250 mg / L, and the concentration of each of o, m, and p-talesol to 25 mg / L.
- Degradation treatment was performed under the same treatment conditions as in Table 8 above, and the concentrations of phenol, honolemuanolaldehyde, methanol, and o, m, p_cresol in the medium were measured over time.
- Figure 2 shows the results.
- Each liquid medium having a p-talesole concentration of 1, 200, and 1,400 mg / L was prepared in the same manner as in Example 3 except that p-talesole was used instead of m-talesole of Example 3.
- p-talesole was used instead of m-talesole of Example 3.
- the results are shown in Table 10 below.
- the SB0301 bacterium decomposed P-talesole contained in the aqueous liquid at a concentration as high as 1,200 mg / L to 99% or more in 7 days.
- each liquid medium with o-talesole concentrations of 1, 200, and 1,400 mg ZL was prepared and inoculated with SB0301 bacteria in the same manner as in Example 3. And cultured at 30 ° C.
- the results are shown in Table 11 below.
- the SB0301 bacterium degraded 0-talesol contained in the aqueous liquid at a concentration as high as 1,200 mg / L to 99% or more in 7 days.
- Each liquid medium having a honolemuanolaldehyde concentration of 400 and 500 mg / L was prepared in the same manner as in Example 3 except that formaldehyde was used in place of m-talesol of Example 3, and inoculated with SB0301. And cultured at 30 ° C.
- the results are shown in Table 13 below.
- SB0301 bacteria decomposed formaldehyde contained in the aqueous liquid to 99% or more in 2 days.
- Example 8 Each liquid medium with a methanol concentration of 1, 500 and 2,000 mg / L was prepared in the same manner as in Example 3 except that methanol was used in place of m-talesole in Example 3, and SB0301 bacteria were inoculated. Cultured at ° C. The results are shown in Table 14 below. The SB0301 bacterium degraded methanol contained in the aqueous liquid at a high concentration of 1,500 mg / L by 55% in 7 days.
- the mixture was sterilized under pressure for 5 minutes, and cooled to room temperature to prepare an inorganic base medium.
- FIG. 3 shows the time-dependent changes in the formaldehyde and methanol concentrations in the medium at this time. From the results shown in FIG. 3, it can be seen that formaldehyde and methanol in an aqueous liquid containing formaldehyde and methanol at a concentration of 5000 mg / L, respectively, can be decomposed almost 99% or more in three days.
- a basal medium having the following composition 80 mL of a basal medium having the following composition was autoclaved at 121 ° C. for 15 minutes. Then, 10 mL of 60,000 and 80,000 mg / L concentrations of honolem dehydrogen, sterilized by using membrane finoleta of 0.45 / im mosquito, and 10 mL of the same SB0202 bacteria as in row f 9 were calorie. The cells were cultured at 30 ° C with the final and final formaldehyde concentrations of 6,000 and 8,000 mg / L, respectively. The results are shown in Table 17 below. At a concentration as high as 6,000 mg / L, SB0202 bacteria decomposed formaldehyde contained in aqueous liquid by 87% or more in 7 days.
- the inorganic base main culture medium of Table 15 in Example 9 was autoclaved at 121 ° C for 15 minutes, and 80 mL thereof was sterilized using a membrane finoleta of 0.45 x m spores, and 150,000, 200,000, 240,000 mg. / L concentration of methanol (10 mL) and the same SB0202 bacteria as in row 9 (10 mL) were mixed at a final concentration of 15,000, 20, 000 and 24, OOOmg / L, respectively, and cultured at 30 ° C. did.
- the results are shown in Table 18 below.
- the SB0202 bacterium degraded more than 99% of the methanol contained in the aqueous liquid at concentrations as high as 20,000 mg / L in 10 days.
- a 500 mL shake flask was charged with 80 mL of the inorganic base main medium used in Example 9, and sterilized with a membrane filter. 10 mL of an aqueous solution containing phenol, formaldehyde, and methanol at a concentration of 2,50 Omg / L each was added. added. To this was added 10 mL of the same SB0202 bacterial solution as in Example 9, which had been pre-cultured with the inorganic base main medium in the test tube, and the concentrations of phenol, formaldehyde and methanol in the medium were each 250 mg / L. . Table 16 above Decomposition was performed under the treatment conditions, and the concentrations of formaldehyde and methanol in the medium were measured over time.
- Figure 4 shows the time-dependent changes in the concentrations of formaldehyde and methanol in the medium at this time. From the results in Fig. 4, it can be seen that SB0202 bacteria contained 95% or more of honolemunoraldehyde in 3 days in an aqueous liquid containing formaldehyde and methanol at a concentration of 250 mg ZL, even in the presence of phenol. , And methanol can be decomposed by 95% or more in 3 days.
- the SB0202 bacterium does not have the ability to degrade phenol, but it is resistant to phenol, and will die even if the aqueous liquid to be treated contains 2, OOOmgZL of phenol. Nagu 2, More than 98% of OOOmg / L formaldehyde was decomposed in 10 days.
- Example 9 The components listed in Table 15 of Example 9 were dissolved in 75 mL of distilled water and autoclaved in a basal medium, and sterilized using a 0.45 / im pore membrane filter in 1, OOOmg / L salicylic acid. Add 20 mL, and add the liquid medium to a final salicylic acid concentration of 200 mg / L. Produced. In addition, liquid media supplemented with P-hydroxybenzoic acid or formic acid instead of salicylic acid were prepared. 5 mL of the same SB0202 bacterial solution as in Example 9 was inoculated into 95 mL of each of these liquid media, cultured at 30 ° C. for 7 days, and tested for assimilation. The results are shown in Table 20 below. It was confirmed that SB0202 bacteria assimilate three kinds of organic compounds (salicylic acid, p-hydroxybenzoic acid, and formic acid).
- the solution was sterilized under pressure for 5 minutes and cooled to room temperature to prepare an inorganic salt basal medium.
- aqueous solution containing phenol, formaldehyde and methanol at a concentration of 7,500 mg / L each was prepared and sterilized using a 0.45 / m pore membrane filter.
- a 500 mL shake flask was charged with 80 mL of the above inorganic base main culture medium, and 10 mL of an aqueous solution containing phenol, formaldehyde, and methanol at 7,500 mg / L each as organic compounds was added.
- 10 mL of a bacterial solution of SBO201 (cell concentration: 1.8 ⁇ 10 6 cfuZmL), which had been cultured in advance in the inorganic base medium in a test tube, was added.
- FIG. 5 shows changes over time in the concentrations of phenol, formaldehyde and methanol in the medium at this time.
- a 500 mL shake flask was charged with 80 mL of the inorganic base main culture medium, and 10 mL of an aqueous solution containing phenol and formaldehyde at 7,500 mg / L each as organic compounds was added. Thereto, 10 mL of the same bacterial solution of SB0201 as in Example 15, which had been cultured in advance in the inorganic base main medium in the test tube, was caloried. By mixing these three types, the concentration of each of phenol and formaldehyde in the medium was adjusted to 750 mg / L. The decomposition treatment was performed under the same treatment conditions as in Table 22, and the concentrations of phenol and formaldehyde in the medium were measured over time. FIG. 6 shows the time-dependent changes in the phenol and formaldehyde concentrations in the medium at this time.
- Example 17 Same as Example 17 except that formaldehyde was used in place of the phenol of Example 17 to prepare each f-night medium having a honolemuanolaldehyde concentration of 1,000, 1,500 and 2,000 mg / L. Then, SB0201 was inoculated and cultured at 30 ° C. The results are shown in Table 24 below.
- the SB0 201 bacterium decomposed formaldehyde contained in aqueous liquids at concentrations as high as 2, OOO mg ZL to 99% or more in 8 days.
- Example 17 Except that methanol was used in place of the phenol of Example 17, the respective overnight medium was prepared at a methanol concentration of 1,000, 1,500 and 2,000 mg / L in the same manner as in Example 17, and the SB0201 strain was isolated. The cells were inoculated and cultured at 30 ° C. The results are shown in Table 25 below.
- Example 17 To the same autoclave-sterilized base medium used in Example 17, 200 mL of 1000 mg / L m-taresol sterilized using a 0.45 ⁇ -pore membrane filter was added to prepare a liquid medium. Also, a liquid medium was prepared in which 200 mL of p-hydroxybenzoic acid or formic acid was added instead of m-talesol. 95 mL of each liquid medium was inoculated with 5 mL of the same SB0201 bacterial solution as in Example 15, cultured at 30 ° C. for 7 days, and tested for assimilation. The results are shown in Table 26 below. It was confirmed that SB0201 bacteria assimilate three kinds of organic compounds (m_cresol, p-hydroxybenzoic acid and formic acid).
- Phenol and formaldehyde in combination with SB0202 and SB0201 strains Decomposition characteristics for aqueous solutions containing a mixture of three organic compounds, methanol and methanol, were investigated.
- Example 15 In the same manner as in Example 15, an inorganic salt basal medium containing the components shown in Table 21 was prepared.
- a 500 mL shake flask was charged with 80 mL of the inorganic base main culture medium, and 10 mL of an aqueous solution containing phenol, formaldehyde, and methanol as organic compounds at a concentration of 10,000 mg / L each was prepared. Then, 5 mL of the bacterial solution of SB0202 (cell concentration: 1.9 ⁇ 10 9 cfu / mL) and the bacterial solution of SB0201 (cell concentration: (1.8 ⁇ 10 6 cfu / mL) 5 mL was added. By mixing these three types, the respective concentrations of phenol, formaldehyde and methanol in the medium were adjusted to 1000 mg / L.
- FIG. 7 shows the changes over time in the concentrations of phenol, formaldehyde and methanol in the medium at this time.
- Example 15 In the same manner as in Example 15, an inorganic salt basal medium containing the components shown in Table 21 was prepared.
- aqueous solution containing phenol, formaldehyde, and methanol at a concentration of 2,500 mg / L each, and containing o, m, and ⁇ -taresol at a concentration of 500 mg / L each was prepared, and 0.45 ⁇ pores were prepared. Sterilized using a membrane filter.
- a 500 mL shake flask was charged with 80 mL of the inorganic base main culture medium, containing phenol, formaldehyde and methanol at a concentration of 2,500 mg / L each as the organic compound, and each of o, m, and ⁇ _tarezol. 10 mL of an aqueous solution containing 500 mg / L was added.
- a waste liquid containing a bactericidal biodegradable organic compound such as cresol, phenol, formaldehyde and methanol can be efficiently mixed. Can be processed well. Further, even a waste liquid containing an organic compound having a higher concentration than before can be decomposed without requiring treatment such as dilution, so that the processing apparatus can be reduced in scale and the running cost can be reduced. Therefore, it is a very useful treatment method for treating wastewater from factories and hospitals.
- FIG. 1 is a graph showing the degradation characteristics of SB0301 bacteria in a mixed aqueous solution containing phenol, formaldehyde, and methanol at a concentration of 250 mg / L each.
- FIG. 2 Contains phenol, formaldehyde and methanol at a concentration of 250 mg / L each,
- FIG. 4 is a graph showing the degradation characteristics of SB0301 bacteria in a mixed aqueous solution containing, m, and p-talesol at a concentration of 25 mg / L.
- FIG. 3 is a graph showing the degradation characteristics of the novel microorganism SB0202 of the present invention with respect to a mixed aqueous solution containing formaldehyde and methanol at a concentration of 5,000 mg / L, respectively.
- FIG. 4 is a graph showing the degradation characteristics of the novel microorganism SB0202 of the present invention with respect to a mixed aqueous solution containing formaldehyde, methanol and phenol at a concentration of 250 mg / L each.
- FIG. 5 is a graph showing the degradation characteristics of SB0201 bacteria in a mixed aqueous solution containing formaldehyde, phenol and methanol at a concentration of 750 mg / L each.
- FIG. 6 is a graph showing the degradation characteristics of SB0201 bacteria in a mixed aqueous solution containing formaldehyde and phenol at a concentration of 750 mg / L each.
- FIG. 7 is a graph showing the decomposition characteristics of a combination of bacteria SB0202 and SB0201 with respect to a mixed aqueous solution containing formaldehyde, phenol, and methanol at a concentration of 1,000 mg / L each.
- FIG. 8 Contains phenol, formaldehyde, and methanol at a concentration of 250 mg / L each, and each of o, m, and p-talesol at a concentration of 50 mg / L, each of which is a combination of SB0301, SB0202, and SB0201. 4 is a graph showing decomposition characteristics for a mixed aqueous solution.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Biomedical Technology (AREA)
- Virology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Tropical Medicine & Parasitology (AREA)
- Mycology (AREA)
- Botany (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005511001A JPWO2005001066A1 (ja) | 2003-06-18 | 2004-06-17 | 新規分解菌及びそれを用いた有機化合物の分解処理方法 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-173064 | 2003-06-18 | ||
JP2003173064 | 2003-06-18 | ||
JP2003-208934 | 2003-08-27 | ||
JP2003208934 | 2003-08-27 | ||
JP2004071988 | 2004-03-15 | ||
JP2004-071988 | 2004-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005001066A1 true WO2005001066A1 (ja) | 2005-01-06 |
Family
ID=33556151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/008529 WO2005001066A1 (ja) | 2003-06-18 | 2004-06-17 | 新規分解菌及びそれを用いた有機化合物の分解処理方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2005001066A1 (ja) |
WO (1) | WO2005001066A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006035093A (ja) * | 2004-07-27 | 2006-02-09 | Sumitomo Chemical Co Ltd | ホルムアルデヒドの分解方法 |
CN108753641A (zh) * | 2017-10-23 | 2018-11-06 | 山西省农业科学院果树研究所 | 一种高效降解自毒物质对羟基苯甲酸的细菌及其应用 |
WO2019012910A1 (ja) * | 2017-07-12 | 2019-01-17 | 三木理研工業株式会社 | ホルムアルデヒド分解方法 |
CN110194534A (zh) * | 2019-06-14 | 2019-09-03 | 湖南工学院 | 一种降解废水中甲醛的多功能再生材料的制备方法 |
CN111592093A (zh) * | 2020-05-25 | 2020-08-28 | 中国科学院城市环境研究所 | 一种酚醛废水处理方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6599722B2 (en) * | 1998-12-22 | 2003-07-29 | Genencor International, Inc. | Method for producing ascorbic acid intermediates |
-
2004
- 2004-06-17 JP JP2005511001A patent/JPWO2005001066A1/ja active Pending
- 2004-06-17 WO PCT/JP2004/008529 patent/WO2005001066A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6599722B2 (en) * | 1998-12-22 | 2003-07-29 | Genencor International, Inc. | Method for producing ascorbic acid intermediates |
Non-Patent Citations (3)
Title |
---|
CHANG B.-V. ET AL.: "Biodegradation of benzene, toluene, and other aromatic compounds by Pseudmonas sp. D8", CHEMOSPHERE, vol. 35, no. 12, 1997, pages 2807 - 2815, XP002981444 * |
CORTI A. ET AL.: "Biodegradation of nonionic surfactants. I. Biotransformation of 4-(1-nonyl)phenol by a Candida maltosa isolate", ENVIRONMENTAL POLLUTION, vol. 90, no. 1, 1995, pages 83 - 87, XP002981446 * |
PALA A.I. ET AL.: "Biological treatment of petrochemical wastewaters by Pseudomonas sp. added activated sludge culture", ENVIRONMENTAL TECHNOLOGY, vol. 17, no. 7, 1996, pages 673 - 685, XP002981445 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006035093A (ja) * | 2004-07-27 | 2006-02-09 | Sumitomo Chemical Co Ltd | ホルムアルデヒドの分解方法 |
WO2019012910A1 (ja) * | 2017-07-12 | 2019-01-17 | 三木理研工業株式会社 | ホルムアルデヒド分解方法 |
CN108753641A (zh) * | 2017-10-23 | 2018-11-06 | 山西省农业科学院果树研究所 | 一种高效降解自毒物质对羟基苯甲酸的细菌及其应用 |
CN108753641B (zh) * | 2017-10-23 | 2021-06-04 | 山西省农业科学院果树研究所 | 一种高效降解自毒物质对羟基苯甲酸的细菌及其应用 |
CN110194534A (zh) * | 2019-06-14 | 2019-09-03 | 湖南工学院 | 一种降解废水中甲醛的多功能再生材料的制备方法 |
CN111592093A (zh) * | 2020-05-25 | 2020-08-28 | 中国科学院城市环境研究所 | 一种酚醛废水处理方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005001066A1 (ja) | 2006-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Mirizadeh et al. | Biodegradation of cyanide by a new isolated strain under alkaline conditions and optimization by response surface methodology (RSM) | |
Chen et al. | Simultaneous cadmium removal and 2, 4-dichlorophenol degradation from aqueous solutions by Phanerochaete chrysosporium | |
Karimi et al. | Biodegradation of naphthalene using Pseudomonas aeruginosa by up flow anoxic–aerobic continuous flow combined bioreactor | |
CN110643548B (zh) | 一株降解苯胺的浅黄微杆菌及其应用 | |
CN103025668A (zh) | 一种快速处理废水的方法及其组合物 | |
JP7058274B2 (ja) | 好塩性微生物を使用する高塩分環境からのアニリンの生分解 | |
Krishnaswamy et al. | Studies on the efficiency of the removal of phosphate using bacterial consortium for the biotreatment of phosphate wastewater | |
CN103923867A (zh) | 混合菌群微生物制剂及其在处理含硝态氮废水中的应用 | |
CN105062936A (zh) | 一种复合适盐微生物菌剂及其应用 | |
Dewi et al. | Efficiency of Aspergillus sp. 3 to reduce chromium, sulfide, ammonia, phenol, and fat from batik wastewater | |
Ghanem et al. | Optimization of chloroxylenol degradation by Aspergillus niger using Plackett-Burman design and response surface methodology | |
Cherni et al. | Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate | |
EP1210407B1 (en) | Bacterial consortium ebc1000 and a method using the bacterial consortium ebc1000 for remedying biologically recalcitrant toxic chemicals contained in industrial wastewater, waste materials and soils | |
Ghanem et al. | Optimization of chloroxylenol degradation by Aspergillus niger using Plackett-Burman design and response surface methodology | |
CN104388343B (zh) | 一种用于处理高盐工业废水的微生物菌群 | |
Farag et al. | Degradation of phenol by a new-degradable marine halophilic fungus Fennellia flavipes isolated from mangrove sediments | |
WO2005001066A1 (ja) | 新規分解菌及びそれを用いた有機化合物の分解処理方法 | |
Ramteke et al. | Synthesis and characterization of modified activated sludge for biological oxidation with isolation studies and performance evaluation | |
JP4670425B2 (ja) | 新規分解菌及びそれを用いた有機化合物の分解処理方法 | |
WO2019012910A1 (ja) | ホルムアルデヒド分解方法 | |
Radwan et al. | Atrazine mineralization by Stenotrophomonas maltophilia and Agrobacterium tumefaciens Egyptian soil isolates | |
Parihar et al. | Identification and characterization of potential phenol degrading bacterial strains isolated from municipal sewage, Bilaspur, Chhattisgarh | |
EP1571202B1 (en) | PVA-decomposing bacteria and method for decomposing PVA | |
Sikhosana et al. | Profile of Nitrification and Denitrification Bacteria in the Different Layers of Filter Media in a Rhizofiltration System | |
Chitra et al. | Biodegradation of nitrate in waste streams from explosives manufacturing plants |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005511001 Country of ref document: JP |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
122 | Ep: pct application non-entry in european phase |