Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction
Abstract
Disclosed is a method for separating a vaporous or gaseous contaminant from an air stream contaminated therewith. This method includes the steps of: (a) passing said contaminated air into a contact zone in which is disposed an aerogel material capable of selecting adsorbing said contaminant from air and therein contacting said contaminated air with an aerogel material; and (b) withdrawing from said zone, air depleted of said contaminant. For present purposes, "contaminant" means a material not naturally occurring in ambient air and/or a material naturally occurring in air but present at a concentration above that found in ambient air. Thus, the present invention scrubs (or treats) air for the purpose of returning it to its ambient composition. Also disclosed herein is a process for the photocatalytic destruction of contaminants from an air stream wherein the contaminated air stream is passed into a control cell or contact zone in which is disposed a photocatalytic aerogel and exposing said aerogel to ultraviolet (UV) radiation for photocatalytically destroying the adsorbed contaminant, and withdrawing from said cell an exhaust air stream depleted in said contaminant.
- Inventors:
-
- 221 Oakland Park Ave., Columbus, OH 43214
- Issue Date:
- Research Org.:
- ATTIA APPLIED SCIENCES INC
- OSTI Identifier:
- 873056
- Patent Number(s):
- 6080281
- Assignee:
- Attia, Yosry A. (221 Oakland Park Ave., Columbus, OH 43214)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- DOE Contract Number:
- FG51-92R020214
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- scrubbing; contaminants; contaminated; air; streams; aerogel; materials; optional; photocatalytic; destruction; disclosed; method; separating; vaporous; gaseous; contaminant; stream; therewith; steps; passing; contact; zone; disposed; material; capable; selecting; adsorbing; therein; contacting; withdrawing; depleted; purposes; means; naturally; occurring; ambient; concentration; found; scrubs; treats; purpose; returning; composition; process; passed; control; cell; exposing; ultraviolet; radiation; photocatalytically; destroying; adsorbed; exhaust; contact zone; naturally occurring; ambient air; air stream; material capable; photocatalytic destruction; air streams; gaseous contaminant; catalytic destruction; aerogel material; aerogel materials; contaminated therewith; /204/95/423/
Citation Formats
Attia, Yosry A. Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction. United States: N. p., 2000.
Web.
Attia, Yosry A. Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction. United States.
Attia, Yosry A. Sat .
"Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction". United States. https://www.osti.gov/servlets/purl/873056.
@article{osti_873056,
title = {Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction},
author = {Attia, Yosry A},
abstractNote = {Disclosed is a method for separating a vaporous or gaseous contaminant from an air stream contaminated therewith. This method includes the steps of: (a) passing said contaminated air into a contact zone in which is disposed an aerogel material capable of selecting adsorbing said contaminant from air and therein contacting said contaminated air with an aerogel material; and (b) withdrawing from said zone, air depleted of said contaminant. For present purposes, "contaminant" means a material not naturally occurring in ambient air and/or a material naturally occurring in air but present at a concentration above that found in ambient air. Thus, the present invention scrubs (or treats) air for the purpose of returning it to its ambient composition. Also disclosed herein is a process for the photocatalytic destruction of contaminants from an air stream wherein the contaminated air stream is passed into a control cell or contact zone in which is disposed a photocatalytic aerogel and exposing said aerogel to ultraviolet (UV) radiation for photocatalytically destroying the adsorbed contaminant, and withdrawing from said cell an exhaust air stream depleted in said contaminant.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2000},
month = {Sat Jan 01 00:00:00 EST 2000}
}
Works referenced in this record:
Destructive adsorption of chlorinated hydrocarbons on ultrafine (nanoscale) particles of calcium oxide
journal, April 1993
- Koper, Olga; Li, Yong Xi; Klabunde, Kenneth J.
- Chemistry of Materials, Vol. 5, Issue 4
Aerogels and related porous materials
journal, June 1989
- Gesser, H. D.; Goswami, P. C.
- Chemical Reviews, Vol. 89, Issue 4