Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...
Patent
1989-09-15
1991-09-03
Kyle, Deborah L.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
With means applying electromagnetic wave energy or...
20415715, 2041573, 20415741, 2041575, 423240, B01J 1908, B01J 1912
Patent
active
050452886
ABSTRACT:
Means and methods employing gas-solid heterogenous photocatalysis ("GSHP") to counteract the widespread occurrence of groundwater and air polluted by volatile organic compounds (VOCs) such as trichloroethylene (TCE) and non-volatile organic compounds such as polychlorinated biphenyls (PCBs), and the like without creating other environmentally hostile agents. Common treatment methods such as spray tower aeration and activated carbon adsorption, both of which merely convert pollutants into alternate but equally obnoxious forms, can be augmented by the means and methods hereof to create ecologically innocuous byproducts. Heterogeneous photocatalysis allows the complete destruction of those organic water pollutants normally contained in the effluents of existing water treatment facilities. Ambient temperature ultraviolet-illuminated catalyst, such as, titanium dioxide, in the presence of moist air substantially completely destroys trichloroethylene (TCE) type-materials in a gaseous phase.
REFERENCES:
patent: 3924246 (1975-12-01), Scherer
patent: 4544470 (1985-10-01), Hetrick
patent: 4774026 (1988-09-01), Kitamori et al.
Dibble Lynette A.
Raupp Gregory B.
Arizona Board of Regents, a body corporate acting on behalf of A
Eldred J. Woodrow
Kyle Deborah L.
Mybeck Richard R.
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