JPS63221899A - Oxidative decomposing method of methyl mercaptan by microorganism - Google Patents
Oxidative decomposing method of methyl mercaptan by microorganismInfo
- Publication number
- JPS63221899A JPS63221899A JP5388087A JP5388087A JPS63221899A JP S63221899 A JPS63221899 A JP S63221899A JP 5388087 A JP5388087 A JP 5388087A JP 5388087 A JP5388087 A JP 5388087A JP S63221899 A JPS63221899 A JP S63221899A
- Authority
- JP
- Japan
- Prior art keywords
- methyl mercaptan
- methyl
- microorganism
- oxidative decomposition
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 16
- 244000005700 microbiome Species 0.000 title claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 title description 2
- 241000894006 Bacteria Species 0.000 claims abstract description 11
- 238000006864 oxidative decomposition reaction Methods 0.000 claims abstract description 7
- 241000605118 Thiobacillus Species 0.000 claims abstract description 6
- 241000605268 Thiobacillus thioparus Species 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 8
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010800 human waste Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 1
- 235000019797 dipotassium phosphate Nutrition 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 239000008057 potassium phosphate buffer Substances 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Landscapes
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、微生物による悪臭物質の酸化分解方法に関す
るものであり、より詳しくはパルプ工場、し尿処理場、
食品工場等から発生するメチルメルカプタンの酸化分解
法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for oxidative decomposition of malodorous substances by microorganisms, and more specifically to pulp mills, human waste treatment plants,
This paper relates to the oxidative decomposition method of methyl mercaptan generated from food factories, etc.
従来、メチルメルカプタンを生物学的に酸化分解する方
法として、土壌もしくは活性汚泥が用いられているが、
メチルメルカプタンを酸化分解する微生物について何ら
報告されていない。Conventionally, soil or activated sludge has been used to biologically oxidize and decompose methyl mercaptan.
There are no reports on microorganisms that oxidize and degrade methyl mercaptan.
そこで、本発明者らはメチルメルカプタンに対し酸化分
解能を有する微生物を求めた結果、本発明者の一人が先
に有機燐化合物分解菌として分離したチオバイルス Ｔ
Ｋ−１（特公昭５７−４３０４号公報）がメチルメルカ
プタンを酸化分解することを見い出し、本国を使用して
メチルメルカプタンを効率的に酸化分解せしめる方法を
開発したものである。Therefore, the present inventors searched for a microorganism that has the ability to oxidize and degrade methyl mercaptan, and as a result, Thiovirus T., which one of the present inventors had previously isolated as an organophosphorus compound degrading bacterium.
K-1 (Japanese Patent Publication No. 57-4304) discovered that methyl mercaptan could be oxidized and decomposed, and developed a method for efficiently oxidatively decomposing methyl mercaptan.
すなわち、本発明はチオバチルス属に属し、メチルメル
カプタンに対し酸化分解能を有する細菌と、メチルメル
カプタンを接触させることを特徴とする微生物によるメ
チルメルカプタンの酸化分解法に関するものであります
。That is, the present invention relates to a method for oxidative decomposition of methyl mercaptan using a microorganism, which is characterized by bringing methyl mercaptan into contact with bacteria belonging to the genus Thiobacillus and having the ability to oxidize methyl mercaptan.
以上、本発明の具体的方法について詳述する。 The specific method of the present invention will be described in detail above.
本国をメチルメルカプタンと接触させると本菌は、メチ
ルメルカプタンを構成する炭素、水素およびイオウを酸
化することによりてエネルギーを得て生育し、これらを
それぞれ二酸化炭素、水および硫酸にまで酸化分解する
ことが本国の特徴である。従って、本国の他の栄養源と
しては通常使用される燐酸カリウム、塩化マグネシウム
、塩化アンモニウム、塩化カルシウム、塩化第一鉄、硫
酸マンガンなどを含む無機培地が供される。また本国の
前培養に際しては、基質としてメチルメルカプタン、硫
化メチルまたは二硫化メチルを用いることが重要である
０本国をチオ硫酸や硫化水素を基質として生育させた場
合にはメチルメルカプタンと接触させてもすぐには分解
能力を示さず１０日以上の馴養期間を要する。When brought into contact with methyl mercaptan, this bacterium grows and obtains energy by oxidizing the carbon, hydrogen, and sulfur that make up methyl mercaptan, and oxidizes and decomposes these into carbon dioxide, water, and sulfuric acid, respectively. is a characteristic of the home country. Therefore, as other nutritional sources in Japan, commonly used inorganic media containing potassium phosphate, magnesium chloride, ammonium chloride, calcium chloride, ferrous chloride, manganese sulfate, etc. are provided. It is also important to use methyl mercaptan, methyl sulfide, or methyl disulfide as a substrate when pre-cultivating the native soil.If the native soil is grown using thiosulfuric acid or hydrogen sulfide as a substrate, it is also important to use methyl mercaptan, methyl sulfide, or methyl disulfide as a substrate. It does not show decomposition ability immediately and requires an acclimatization period of 10 days or more.
しかし、本国を一度メチルメルカプタン、硫化メチル又
は二硫化メチルを基質として生育させると本国はメチル
メルカプタン分解能を獲得し、その後チオ硫酸や硫化水
素を基質として用いた場合でもメチルメルカプタン分解
能を保持し、１〜２日の馴養期間でメチルメルカプタン
分解能を示すようになる。However, once grown on methyl mercaptan, methyl sulfide, or methyl disulfide, it acquires the ability to decompose methyl mercaptan, and even when thiosulfate or hydrogen sulfide is used as a substrate, it retains the ability to decompose methyl mercaptan. After an acclimatization period of ~2 days, it begins to show methyl mercaptan decomposition ability.
ガス状のメチルメルカプタンと本国とを接触させる方法
としては、従来より悪臭ガスの処理方法として用いられ
る曝気法、充てん浴法、トレー法、網棚法等のいずれで
も良く、また土壌、熟成堆肥、活性汚泥などに接種して
用いても良い。The method of bringing gaseous methyl mercaptan into contact with the home country may be any of the conventional methods used to treat malodorous gases, such as the aeration method, the filled bath method, the tray method, and the net rack method. It may also be used by inoculating sludge.
メチルメルカプタンを活性汚泥で処理する場合の負荷限
度は、活性汚泥菌１ｋｇ当たり１０ｇ１日と言われてい
る（重田ら：産業公害、２０巻、Ｐ２Ｓ５）が本国を用
いた場合は、１ｋｇ当たり２０００ ｇ ／日でも処理
が可能である０本国によりメチルメルカプタンを分解す
る場合の温度条件は、１０℃〜４０℃であるが、より望
ましくは２５℃〜３０℃が良い、ｐＨについてはｐｊ１
５〜８、より望ましくは６．５〜７．２が良い、メチル
メルカプタンの酸化により硫酸が生成されてＤＨが低下
するので、水酸化ナトリウム、炭酸カリウム、アンモニ
ア等のアルカリ剤を適宜加えて中和する必要がある。
ｐＨの激変を避けるため、本国の使用に際し、ｐＨ緩衝
液を用いるのが望ましい＊ ｐＨ１１衝液としては、リ
ン酸カリウム緩衝液が良イ、ｖｌ衝［［Ｇ！０．０１Ｍ
〜０．０４Ｍカ良イ。When treating methyl mercaptan with activated sludge, the load limit is said to be 10 g per 1 kg of activated sludge bacteria per day (Shigeta et al., Industrial Pollution, Vol. 20, P2S5), but in Japan, it is 2000 g per 1 kg. The temperature conditions for decomposing methyl mercaptan in different countries are 10°C to 40°C, but more preferably 25°C to 30°C, and the pH is pj1.
5 to 8, more preferably 6.5 to 7.2. Oxidation of methyl mercaptan produces sulfuric acid and lowers DH, so add an alkaline agent such as sodium hydroxide, potassium carbonate, ammonia, etc. as appropriate. It is necessary to harmonize.
To avoid drastic changes in pH, it is recommended to use a pH buffer when using the product in your home country.* Potassium phosphate buffer is a good pH 11 buffer. 0.01M
~0.04M strength.
メチルメルカプタンの分解によって生じた硫酸の濃度が
高くなると菌の活性が低下するため、硫酸の濃度が２％
を超えないように、望ましくは０．８％を超えないよう
にする必要がある。As the concentration of sulfuric acid produced by the decomposition of methyl mercaptan increases, the activity of the bacteria decreases, so the concentration of sulfuric acid was reduced to 2%.
It is necessary not to exceed 0.8%, preferably not to exceed 0.8%.
なお、本国はチオバチルスチオパルス ＴＫ−１（微工
研菌寄第５２２２号）として、工業技術院微生物工業技
術研究所に寄託されている。In addition, in its home country, it has been deposited with the Institute of Microbial Technology, Agency of Industrial Science and Technology as Thiobacillus thioparus TK-1 (Fiber Science and Technology Research Institute No. 5222).
また、前述のとおり例示菌として本国が最も好適に用い
られるが、勿論チオバチルス属に属し、メチルメルカプ
タンに対し、酸化分解能を有する細菌であればいずれの
物であっても良い。Further, as mentioned above, as the example bacterium, the most suitable bacterium is used, but of course any bacterium belonging to the genus Thiobacillus and having the ability to oxidize and decompose methyl mercaptan may be used.
〈実施例 １〉
培地（＆Ｉ［ｍ ニリン酸−カリウム２ｇ、リン酸二カ
リウム２ｇ、炭酸ナトリウム０．４ｇ、塩化マグネシウ
ム０．２ｇ、塩化アンモニウム０．４ｇ、 微量元素類
混合液（Ａ、 Ｗｏｏｄら： Ａｒｃｈ、 Ｍｉｃｒｏ
ｂｉｏｌ、＋１１３巻、Ｐ２６５ （１９７７） ）
１ｍｊ！、ビタミン類混合液（Ｔ、Ｋａｎａｇａｗａら
： Ａｇｒ、Ｂｉｏｌ、Ｃｈｅｓ、＋ ４６巻、Ｐ２Ｓ
７１（１９８２）） ５曽ｌ、蒸溜水１０００鋤！）５
０閤Ｅを３００ｍ ｌ容三角フラスコに入れ、チオバチ
ルスチオパレスＴＫ−ｔ（＊１研菌寄第５２２２号）を
接種し、硫化メチル２μｌを加えてゴム栓をし、２５℃
の恒温室にて振盪した。１４日後に硫化メチル２μｌを
添加してさらに５日間振盪した。この培養液３■ｌずつ
を５０ｍ ｊの培地に加え、硫化メチル２μｉを加えて
振盪し、４日後に硫化メチル２μｌを添加した。<Example 1> Medium (&I [m Potassium diphosphate 2g, dipotassium phosphate 2g, sodium carbonate 0.4g, magnesium chloride 0.2g, ammonium chloride 0.4g, trace element mixture (A, Wood et al. : Arch, Micro
biol, Volume +113, P265 (1977))
1mj! , vitamin mixture (T, Kanagawa et al.: Agr, Biol, Ches, + 46 volumes, P2S
71 (1982)) 5 liters, 1000 plows of distilled water! )5
Pour E into a 300 ml Erlenmeyer flask, inoculate it with Thiobacillus Thiopares TK-t (*1 Research Institute No. 5222), add 2 μl of methyl sulfide, seal with a rubber stopper, and incubate at 25°C.
It was shaken in a constant temperature room. After 14 days, 2 μl of methyl sulfide was added and the mixture was shaken for an additional 5 days. 3 μl of this culture solution was added to a 50 mj medium, 2 μl of methyl sulfide was added and shaken, and 4 days later, 2 μl of methyl sulfide was added.
さらに、１日後に硫化メチル５μｌを添加して１日間振
盪して得られた培養液のうち８００１１Ｉｌを内径５５
■−長さ１０００關のアクリル製円筒に入れ、培地１２
００１１ Ｊを加えた０円筒低部より、メチルメルカプ
タンを１０６μｍ７１含む空気を流量２５軸ｊ！／ｗｉ
ｎで供給した０円筒内の温度は２５℃に保ち、ｐＨは１
モル濃度の炭酸カリウムを適宜加えて６．８±０．３に
保った。このようにして、メチルメルカプタン間にわた
り供給した結果、メチルメルカプタンは完全に分解され
て処理ガスは常に無臭であった。Furthermore, 1 day later, 5 μl of methyl sulfide was added, and 80011 Il of the obtained culture solution was shaken for 1 day.
■-Place in an acrylic cylinder with a length of 1000 mm, and culture medium 12
0011 J added 0 From the bottom of the cylinder, air containing 106 μm71 of methyl mercaptan is flowed at a flow rate of 25 axis j! /wi
The temperature inside the 0 cylinder supplied with n was maintained at 25°C, and the pH was 1.
A molar concentration of potassium carbonate was added as appropriate to maintain the concentration at 6.8±0.3. As a result of supplying methyl mercaptan in this way, the methyl mercaptan was completely decomposed and the treated gas was always odorless.
硫酸が定量的に生じた。Sulfuric acid was produced quantitatively.
菌体量はメチルメルカプタン供給開始時において２１１
ＩＩｇ／ｌであったものが、１１日後には２１１ｍｇ／
１に増加した。本実験におけるメチルメルカプタンの
容積負荷は４１．５ｇ／ ｍ”／日、菌体当たりの負荷
の最大値は２．０ｋｇ／ｋｇ／日であった。The amount of bacterial cells was 211 at the start of methyl mercaptan supply.
IIg/l, but after 11 days it was 211mg/l.
Increased to 1. The volume load of methyl mercaptan in this experiment was 41.5 g/m''/day, and the maximum load per bacterial cell was 2.0 kg/kg/day.
このように本発明は、パルブ工場、し尿処理工場、食品
工場等から発生する悪臭物質メチルメルカプタンと、チ
オバチルス属に属し、メチルメルカプタンに対し酸化分
解能を有する細菌を接触させることにより容易に脱臭す
ることが可能となったものである。As described above, the present invention enables easy deodorization of methyl mercaptan, a malodorous substance generated from pulp factories, human waste processing factories, food factories, etc., by bringing bacteria that belong to the genus Thiobacillus and have the ability to oxidize and decompose methyl mercaptan into contact with each other. is now possible.
Claims (1)
化分解能を有する細菌と、メチルメルカプタンを接触さ
せることを特徴とする微生物によるメチルメルカプタン
の酸化分解法。A method for oxidative decomposition of methyl mercaptan using microorganisms, which comprises bringing methyl mercaptan into contact with bacteria belonging to the genus Thiobacillus and having the ability to oxidize methyl mercaptan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5388087A JPS63221899A (en) | 1987-03-09 | 1987-03-09 | Oxidative decomposing method of methyl mercaptan by microorganism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5388087A JPS63221899A (en) | 1987-03-09 | 1987-03-09 | Oxidative decomposing method of methyl mercaptan by microorganism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63221899A true JPS63221899A (en) | 1988-09-14 |
| JPH0311838B2 JPH0311838B2 (en) | 1991-02-18 |
Family
ID=12955061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5388087A Granted JPS63221899A (en) | 1987-03-09 | 1987-03-09 | Oxidative decomposing method of methyl mercaptan by microorganism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63221899A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106822A (en) * | 1985-11-01 | 1987-05-18 | Cosmo Shokuhin Kk | Desulfurizing method utilizing sulfur oxidizing |
-
1987
- 1987-03-09 JP JP5388087A patent/JPS63221899A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106822A (en) * | 1985-11-01 | 1987-05-18 | Cosmo Shokuhin Kk | Desulfurizing method utilizing sulfur oxidizing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0311838B2 (en) | 1991-02-18 |
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