Back to results
US 6,143,553 AGranted
Process and materials for removing pollutants
AssigneeRegenerative Environmental Equipment Co., Inc.
InventorAaron J. Teller
Life of this patent
Estimating the term…
Abstract
A process for removing pollutants is enhanced by using a slurry containing a particulate adsorbent carrying a biologically active material. The pollutant is contacted with the slurry and is adsorbed and biodegraded therein. The slurry is useful in a bioscrubber and provides economical high flow rate treatment of gases.
Claims20
A process for scrubbing a gas stream, which comprises:
- contacting a gas containing pollutant with a slurry containing a particulate absorbent carrying a biologically active material thereon, in a packed bed, wherein the gas is passed through said bed at a mass flow rate of at least about 500 lbs/(hr.multidot.ft.sup.2) and the ratio of the slurry flow rate to the gas mass flow rate is greater than about 2:1, thereby reducing the amount of said pollutant by biodegradation.
A process, which comprises:
- (1) passing through a filamentous packed bed having a free volume of at least 70%, (1) a gas stream containing a pollutant at a mass flow rate of from about 250 to about 2500 lbs/(hr.multidot.ft.sup.2) and (2) a slurry containing a particulate adsorbent having a biologically active material thereon at a mass flow rate of from about 1,000 to 17,000 lbs/(hr.multidot.ft.sup.2), wherein the ratio of the slurry mass flow rate to the gas mass flow rate is within the range of from 2:1 to 20:1 and the mean residence time in the packed bed is not more than 60 seconds;
- and
- (2) adsorbing at least 60% of said pollutant onto said particulate adsorbent and biodegrading said adsorbed pollutant by said biologically active material before said slurry exits the packed bed.
Dependencies are inferred from the claim text.