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| Number | Title | Issue Date |
| 6878282 | System and method for withdrawing permeate through a filter and for cleaning the filter in situ A system is provided for withdrawing permeate from a substrate. The exemplary system includes a vessel having a wall configured to contain substrate, a compartment positioned adjacent the wall of the vessel and configured to receive substrate from the vessel, and a ... | 04/12/2005 |
| 6830922 | System and method for inoculating a biological reactor A system and method are provided for inoculating a biological reactor having a chamber. The chamber is configured to contain influent and biomass to degrade contaminants in the influent. A vessel is configured to receive influent and biomass from the chamber and to ... | 12/14/2004 |
| 6706521 | Bed cleaning system for fluidized-bed bioreactors A reaction chamber is adapted to contain a fluidized bed having a slurry of liquid, media and biomass. A lift and motive fluid are provided to urge slurry from the reaction chamber through a passage from a slurry inlet to a slurry discharge. The height of the slurry... | 03/16/2004 |
| 6627082 | System and method for withdrawing permeate through a filter and for cleaning the filter in situ A system is provided for withdrawing permeate from a substrate. The exemplary system includes a vessel configured to contain substrate, two or more compartments configured to receive substrate from the vessel and to return a portion of received substrate ... | 09/30/2003 |
| 6524842 | Biodegradation of gasoline oxygenates A method for degrading an undesirable ether-based environmental contaminant by contacting the ether with a hydrogen-oxidizing microorganism to convert the ether to innocuous compounds which are environmentally acceptable, including treating the ether-base... | 02/25/2003 |
| 6331251 | System and method for withdrawing permeate through a filter and for cleaning the filter in situ A system is provided for withdrawing permeate from a substrate through a filter and for cleaning the filter in situ. The system includes a vessel configured to contain a substrate and a compartment connected to receive substrate from the vessel and connec... | 12/18/2001 |
| 6303366 | Biodegradation of the gasoline oxygenates Disclosed is a method for monitoring the degradation of methyl tert-butyl ether in a contaminated media which contains methyl tert-butyl ether and/or which is treated under conditions which cause the degradation of methyl tert-butyl ether into 2-hydroxy i... | 10/16/2001 |
| 5958757 | Biological conversion of organic compounds Saturated aliphatic halocarbons, including environmental contaminants, are degraded to innocuous, environmentally acceptable compounds by contact, either in situ or in a bioreactor, with microorganisms that produce aromatic oxygenases, preferably with use... | 09/28/1999 |
| 5861303 | Biofiltration apparatus and method with chemical pre-treatment of contaminated air An apparatus and method is provided for removing contaminants from a gas, wherein the gas flows through a gas treatment chamber having a biological treatment zone and a chemical treatment zone. The amount of a chemical treatment agent that is introduced i... | 01/19/1999 |
| 5821114 | Biofilter with modular panels and method of using the same A filter and method are provided for removing contaminants from gas. The filter includes a frame member, gas-permeable supports positioned in openings defined by the frame member, and a biofiltration material in the supports including a filter substrate a... | 10/13/1998 |
| 5814514 | Biodegradation of the gasoline oxygenates The present invention is directed to a method for degrading an undesirable ether-based environmental contaminant by contacting the ether with a propane-oxidizing microorganism or with an isopropanol-oxidizing microorganism to convert the ether to innocuou... | 09/29/1998 |
| 5788842 | Biomass separation apparatus and method A separator for use with a fluidized-bed bioreactor. A lift draws a slurry of liquid, media and biomass from the fluidized bed. A biomass discharge is connected to the lift and located above the height of the fluidized bed for discharging excess biomass. ... | 08/04/1998 |
| 5750028 | Biomass separation apparatus and method with media return A separator is provided for use with a fluidized-bed bioreactor. A lift draws a slurry of liquid, media and biomass from the fluidized bed. A biomass discharge is connected to the lift for discharging excess biomass. A media discharge, also connected to t... | 05/12/1998 |
| 5567324 | Method of biodegrading hydrophobic organic compounds A method of degrading hydrophobic organic compounds (HOCs) comprising heating the HOCs in the presence of a microorganism capable of metabolizing the HOCs to cause degradation thereof, an embodiment of such method including contacting at ambient temperatu... | 10/22/1996 |
| 5516688 | Method of biodegrading hydrophobic organic compounds, particularly PCBS, and remediation thereof using a bioemulsifier The invention includes remediating a medium contaminated with an organohalide using a microorganism that produces a bioemulsifier. The organohalide is dispersed within the medium by contacting the medium with the bioemulsifier directly produced from Pseud... | 05/14/1996 |
| 5512479 | Method of degrading volatile organochlorides and remediation thereof A process for degrading volatile organic contaminants such as trichloroethylene. and remediating volatile organic contaminant contaminated media using trichloroethylene induced toluene monooxygenase activity in Pseudomonas mendocina KR-1 is described.... | 04/30/1996 |
| 5510033 | Electrokinetic transport of microorganisms in situ for degrading contaminants The method and apparatus of the present invention feature the use of and electric current to induce movement of bacteria in situ to degrade contaminants in aquifers.... | 04/23/1996 |
| 5494574 | Mechanically mixed packed bed bioreactor A bioreactor for separating contaminants from fluid and degrading the separated contaminants is disclosed.... | 02/27/1996 |
| 5439590 | Methods for treating toxic material The present invention features methods and apparatus for processing waste material held in an aqueous medium. A sorbent is added to the aqueous medium. The sorbent reduces the effective concentration of waste material allowing biodegration of the waste ma... | 08/08/1995 |
| 5242598 | Solid phase extraction Hydrophobic contaminants are removed from a particulate matter by contacting the particulate matter with a solid organic phase. The hydrophobic contaminants have greater affinity for the solid organic phase than for the particulate matter and repartition ... | 09/07/1993 |
