发明名称 |
BIOLOGICAL SYSTEM FOR DEGRADING NITROAROMATICS IN WATER AND SOILS |
摘要 |
Novel methods for biodegrading nitroaromatic compounds present as contaminants in soil or water using microorganisms are disclosed. Water is treatable directly; dry soil (22) 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 (36) ferments a carbohydrate (30) 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 (44) completes the mineralization of the contaminant nitroaromatics, using the remaining carbohydrate as a carbon and energy source. Preferably, the carbohydrate (30) is a starch and the aerobic and/or facultative microorganisms are amylolytic (36), which cleave the starch at a moderate rate throughout both stages, ensuring a sustained supply of metabolizable carbohydrates. The microorganisms are preferably selected to be resistant to the types and concentrations of nitroaromatics present as contaminants. |
申请公布号 |
WO9503259(A1) |
申请公布日期 |
1995.02.02 |
申请号 |
WO1994US08431 |
申请日期 |
1994.07.25 |
申请人 |
IDAHO RESEARCH FOUNDATION, INC. |
发明人 |
CRAWFORD, DONALD, L.;STEVENS, TODD, O.;CRAWFORD, RONALD, L. |
分类号 |
A01N33/22;A62D3/02;B09C1/10;C02F3/00;C02F3/12;C02F3/28;C02F3/30;C02F3/34;C05F11/08;C05G3/00;C07C205/23;C09K17/32;C09K101/00 |
主分类号 |
A01N33/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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