Dry-Scrubbing Media Compositions and Methods of Production and Use
First Claim
1. A dry-scrubbing media composition comprising activated alumina and magnesium oxide.
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Abstract
Dry-scrubbing media compositions, methods of preparation and methods of use are provided. The compositions contain activated alumina and magnesium oxide. Optionally, activated carbon and other impregnates, such as hydroxides of group 1A metals, are included. The compositions exhibit improved efficiency and capacity for the removal of compounds, such as hydrogen sulfide, from an air-stream. The compositions are particularly useful for reducing or preventing the release of toxic gaseous compounds from the areas such as landfills, petroleum storage areas, refineries, drinking water systems, sewage treatment facilities, swimming pools, hospital morgues, animal rooms, and pulp and paper production sites.
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Citations
23 Claims
- 1. A dry-scrubbing media composition comprising activated alumina and magnesium oxide.
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5. A dry-scrubbing media composition comprising:
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(a) about 15% to about 35% by weight of activated alumina; (b) about 20% to about 60% by weight activated carbon; and
,(c) about 5% to about 50% by weight magnesium oxide. - View Dependent Claims (6)
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7. A process for making a dry-scrubbing media composition comprising:
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(a) mixing activated alumina and magnesium oxide in water; (b) forming the mixture into at least one cohesive unit; and (c) curing the unit until the water is from about 5% to about 20% by weight of the composition. - View Dependent Claims (8, 9, 10)
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11. A process for making a dry-scrubbing media composition comprising:
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(a) forming a mixture of from about 20% to about 60% activated carbon, from about 15% to about 35% alumina, and from about 5% to about 50% magnesium oxide; (b) combining the mixture with a mixture of from about 5% to 15% solution in water of a hydroxide of a Group IA metal to form at least one cohesive unit; and (c) curing the unit at a temperature of from about 100 to about 225 degrees Fahrenheit until the water is about 5% to about 30% by weight of the composition. - View Dependent Claims (12)
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- 13. A method for preventing or reducing release of a contaminant from an air-stream comprising administering a dry-scrubbing media composition comprising activated alumina and magnesium oxide to an air-stream, wherein the dry-scrubbing media is effective to remove the contaminant from the air stream.
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16. An apparatus for removing a contaminant from an air-stream comprising a dry-scrubbing media and a reaction chamber;
wherein the dry scrubbing media comprises activated alumina and magnesium oxide. - View Dependent Claims (17, 18, 19, 20)
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21. A process for making a dry-scrubbing media composition comprising:
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(a) forming a mixture of activated alumina and magnesium oxide; and (b) extruding the mixture through a die to form a matrix or honeycomb structure with long open channels. - View Dependent Claims (22, 23)
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Specification