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    • 3. 发明授权
    • Biological system for degrading nitroaromatics in water and soils
    • 降解硝酸芳香烃在水土中的生物体系
    • US5616162A
    • 1997-04-01
    • US545903
    • 1995-10-20
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • A62D3/00A62D3/02B09C1/10C02F3/12C02F3/28C02F3/30C02F3/34C12N1/20C02F11/08C02F3/00C05G3/00
    • C02F3/34A62D3/02B09C1/10C02F3/1231C02F3/2806C02F3/286C02F3/30C12N1/20C12R1/01C12R1/145C12R1/22A62D2101/26A62D2101/28C02F2101/003Y02E50/343Y02W10/15Y10S71/903
    • Novel methods for biodegrading nitroaromatic compounds present as contaminants in soil or water using microorganisms are disclosed. Water is treatable directly; dry soil is first converted into a fluid medium by addition of water. The preferred method comprises two stages, each employing microorganisms: a fermentative stage, followed by an anaerobic stage. The fermentative stage is rapid, wherein an inoculum of aerobic and/or facultative microorganisms ferments a carbohydrate added to the fluid medium, exhausting the oxygen in the fluid medium and thereby inhibiting oxidative polymerization of amino by-products of the nitroaromatics. In the subsequent anaerobic stage, an inoculum of a mixed population of anaerobic microorganisms completes the mineralization of the contaminant nitroaromatics, using the remaining carbohydrate as a carbon and energy source. Preferably, the carbohydrate is a starch and the aerobic and/or facultative microorganisms are amylolytic, which cleave the starch at a moderate rate throughout both stages, ensuring a sustained supply of metabolizable carbohydrate. The microorganisms are preferably selected to be resistant to the types and concentrations of nitroaromatics present as contaminants.
    • 公开了使用微生物在土壤或水中作为污染物存在的硝基芳族化合物生物降解的新方法。 水可直接对待; 干土首先通过加水转化成流体介质。 优选的方法包括两个阶段,每个阶段使用微生物:发酵阶段,然后是厌氧阶段。 发酵阶段是快速的,其中有氧和/或兼性微生物的接种物将加入到流体介质中的碳水化合物发酵,排出流体介质中的氧,从而抑制硝基芳族化合物的氨基副产物的氧化聚合。 在随后的厌氧阶段,厌氧微生物的混合群体的接种物完成了污染物硝基芳族化合物的矿化,使用剩余的碳水化合物作为碳和能源。 优选地,碳水化合物是淀粉,并且需氧和/或兼性微生物是淀粉分解的,其在两个阶段以适中的速度切割淀粉,确保可代谢的碳水化合物的持续供应。 优选选择微生物以对作为污染物存在的硝基芳族化合物的类型和浓度具有抗性。
    • 5. 发明授权
    • Biological system for degrading nitroaromatics in water and soils
    • 降解硝酸芳香烃在水土中的生物体系
    • US06348639B1
    • 2002-02-19
    • US09588439
    • 2000-06-06
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • A62D300
    • C02F3/34A62D3/02A62D2101/26A62D2101/28B09C1/10C02F3/1231C02F3/2806C02F3/286C02F3/30C02F2101/003C12N1/20C12R1/01C12R1/145C12R1/22Y02E50/343Y02W10/15Y10S71/903
    • Methods for biodegrading nitroaromatic compounds present as contaminants in soil or water using microorganisms are disclosed. Water is treatable directly; dry soil is first converted into a fluid medium by addition of water. The preferred method comprises two stages, each employing microorganisms: a fermentative stage, followed by an anaerobic stage. The fermentative stage is rapid, wherein an inoculum of aerobic and/or facultative microorganisms ferments a carbohydrate added to the fluid medium, exhausting the oxygen in the fluid medium and thereby inhibiting oxidative polymerization of amino by-products of the nitroaromatics. In the subsequent anaerobic stage, an inoculum of a mixed population of anaerobic microorganisms completes the mineralization of the contaminant nitroaromatics, using the remaining carbohydrate as a carbon and energy source. Preferably, the carbohydrate is a starch and the aerobic and/or facultative microorganisms are amylolytic, which cleave the starch at a moderate rate throughout both stages, ensuring a sustained supply of metabolizable carbohydrate. The microorganisms are preferably selected to be resistant to the types and concentrations of nitroaromatics present as contaminants.
    • 公开了使用微生物在土壤或水中作为污染物存在的硝基芳族化合物生物降解的方法。 水可直接对待; 干土首先通过加水转化成流体介质。 优选的方法包括两个阶段,每个阶段使用微生物:发酵阶段,然后是厌氧阶段。 发酵阶段是快速的,其中有氧和/或兼性微生物的接种物将加入到流体介质中的碳水化合物发酵,排出流体介质中的氧,从而抑制硝基芳族化合物的氨基副产物的氧化聚合。 在随后的厌氧阶段,厌氧微生物的混合种群的接种物完成了污染物硝基芳族化合物的矿化,使用剩余的碳水化合物作为碳和能源。 优选地,碳水化合物是淀粉,并且需氧和/或兼性微生物是淀粉分解的,其在两个阶段以适中的速度切割淀粉,确保可代谢的碳水化合物的持续供应。 优选选择微生物以对作为污染物存在的硝基芳族化合物的类型和浓度具有抗性。
    • 6. 发明授权
    • Biological system for degrading nitroaromatics in water and soils
    • 降解硝酸芳香烃在水土中的生物体系
    • US5387271A
    • 1995-02-07
    • US96735
    • 1993-07-23
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • A01N33/22A62D3/02B09C1/10C02F3/00C02F3/12C02F3/28C02F3/30C02F3/34C05F11/08C05G3/00C07C205/23C09K17/32C09K101/00
    • C02F3/34B09C1/10C02F3/1231C02F3/2806C02F3/286C02F3/30C02F2101/003Y02E50/343Y02W10/15Y02W30/47Y10S71/903
    • Novel methods for biodegrading nitroaromatic compounds present as contaminants in soil or water using microorganisms are disclosed. Water is treatable directly; dry soil is first converted into a fluid medium by addition of water. The preferred method comprises two stages, each employing microorganisms: a fermentative stage, followed by an anaerobic stage. The fermentative stage is rapid, wherein an inoculum of aerobic and/or facultative microorganisms ferments a carbohydrate added to the fluid medium, exhausting the oxygen in the fluid medium and thereby inhibiting oxidative polymerization of amino by-products of the nitroaromatics. In the subsequent anaerobic stage an inoculum of a mixed population of anaerobic microorganisms completes the mineralization of the contaminant nitroaromatics, using the remaining carbohydrate as a carbon and energy source. Preferably, the carbohydrate is a starch and the aerobic and/or facultative microorganisms are amylolytic, which cleave the starch at a moderate rate throughout both stages, ensuring a sustained supply of metabolizable carbohydrate. The microorganisms are preferably selected to be resistant to the types and concentrations of nitroaromatics present as contaminants.
    • 公开了使用微生物在土壤或水中作为污染物存在的硝基芳族化合物生物降解的新方法。 水可直接对待; 干土首先通过加水转化成流体介质。 优选的方法包括两个阶段,每个阶段使用微生物:发酵阶段,然后是厌氧阶段。 发酵阶段是快速的,其中有氧和/或兼性微生物的接种物将加入到流体介质中的碳水化合物发酵,排出流体介质中的氧,从而抑制硝基芳族化合物的氨基副产物的氧化聚合。 在随后的厌氧阶段,厌氧微生物的混合群体的接种物完成了污染物硝基芳族化合物的矿化,使用剩余的碳水化合物作为碳和能源。 优选地,碳水化合物是淀粉,并且需氧和/或兼性微生物是淀粉分解的,其在两个阶段以适中的速度切割淀粉,确保可代谢的碳水化合物的持续供应。 优选选择微生物以对作为污染物存在的硝基芳族化合物的类型和浓度具有抗性。
    • 7. 发明授权
    • Biological system for degrading nitroaromatics in water and soils
    • 降解硝酸芳香烃在水土中的生物体系
    • US06334954B1
    • 2002-01-01
    • US09587648
    • 2000-06-05
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • Donald L. CrawfordTodd O. StevensRonald L. Crawford
    • A62D300
    • C02F3/34A62D3/02A62D2101/26A62D2101/28B09C1/10C02F3/1231C02F3/2806C02F3/286C02F3/30C02F2101/003C12N1/20C12R1/01C12R1/145C12R1/22Y02E50/343Y02W10/15Y10S71/903
    • Novel methods for biodegrading nitroaromatic compounds present as contaminants in soil or water using microorganisms are disclosed. Water is treatable directly; dry soil is first converted into a fluid medium by addition of water. The preferred method comprises two stages, each employing microorganisms: a fermentative stage, followed by an anaerobic stage. The fermentative stage is rapid, wherein an inoculum of aerobic and/or facultative microorganisms ferments a carbohydrate added to the fluid medium, exhausting the oxygen in the fluid medium and thereby inhibiting oxidative polymerization of amino by-products of the nitroaromatics. In the subsequent anaerobic stage, an inoculum of a mixed population of anaerobic microorganisms completes the mineralization of the contaminant nitroaromatics, using the remaining carbohydrate as a carbon and energy source. Preferably, the carbohydrate is a starch and the aerobic and/or facultative microorganisms are amylolytic, which cleave the starch at a moderate rate throughout both stages, ensuring a sustained supply of metabolizable carbohydrate. The microorganisms are preferably selected to be resistant to the types and concentrations of nitroaromatics present as contaminants.
    • 公开了使用微生物在土壤或水中作为污染物存在的硝基芳族化合物生物降解的新方法。 水可直接对待; 干土首先通过加水转化成流体介质。 优选的方法包括两个阶段,每个阶段使用微生物:发酵阶段,然后是厌氧阶段。 发酵阶段是快速的,其中有氧和/或兼性微生物的接种物将加入到流体介质中的碳水化合物发酵,排出流体介质中的氧,从而抑制硝基芳族化合物的氨基副产物的氧化聚合。 在随后的厌氧阶段,厌氧微生物的混合种群的接种物完成了污染物硝基芳族化合物的矿化,使用剩余的碳水化合物作为碳和能源。 优选地,碳水化合物是淀粉,并且需氧和/或兼性微生物是淀粉分解的,其在两个阶段以适中的速度切割淀粉,确保可代谢的碳水化合物的持续供应。 优选选择微生物以对作为污染物存在的硝基芳族化合物的类型和浓度具有抗性。
    • 10. 发明授权
    • Biodegradable azo dyes
    • 可生物降解偶氮染料
    • US5618726A
    • 1997-04-08
    • US345261
    • 1994-11-23
    • Andrzej PaszczynskiStefan GoszczynskiRonald L. CrawfordDonald L. CrawfordMaria B. Pasti
    • Andrzej PaszczynskiStefan GoszczynskiRonald L. CrawfordDonald L. CrawfordMaria B. Pasti
    • C09B67/42B09B3/00C12N1/14D06M16/00
    • C12R1/645C09B67/0071
    • A composition comprises an azo dye having a lignin-like substitution pattern and an environmentally common microbe, such as Streptomyces or Phanerochaete chrysosporium. The composition may also comprise an azo dye having a lignin-like substitution pattern, an amount of lignin peroxidase effective to degrade the dye, and an amount of veratryl alcohol effective to recycle lignin peroxidase II to lignin peroxidase. The lignin peroxidase may be provided by an environmentally common microbe. Azo dyes substituted with lignin-like groups are completely mineralized by the environmentally common microbe. The biodegradable azo dye preferably includes a first aromatic ring having a first substituent R1 selected from hydroxy or lower alkoxy, a second substituent R2 selected from lower alkyl or lower alkoxy, and a third substituent R3 selected from lower alkoxy or halogen. In especially preferred embodiments the first substituent R.sub.1 is hydroxy and is para to the azo group, and both R.sub.2 and R.sub.3 are electron-releasing substituents and are ortho to R.sub.1.
    • 组合物包含具有木质素样取代模式的偶氮染料和环境友好的微生物,例如链霉菌或Phanerochaete chrysosporium。 组合物还可以包含具有木质素样取代模式的偶氮染料,有效降解染料的木质素过氧化物酶的量以及有效将木质素过氧化物酶II再循环至木质素过氧化物酶的量的藜芦醇。 木质素过氧化物酶可以由环境上常见的微生物提供。 用木质素样基团取代的偶氮染料被环境常见的微生物完全矿化。 可生物降解的偶氮染料优选包括具有选自羟基或低级烷氧基的第一取代基R 1的第一芳环,选自低级烷基或低级烷氧基的第二取代基R2和选自低级烷氧基或卤素的第三取代基R3。 在特别优选的实施方案中,第一取代基R 1是羟基,并且与偶氮基对位,并且R 2和R 3都是电子释放取代基并且与R 1邻位。