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Destruction of Chemical Warfare Agents by Enhanced Photocatalytic Reactions at Semiconductor Ceramic Membranes

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 28840
Amount: $69,999.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
7610 Eastmark Drive Suite 105
College Station, TX 77840
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Anuncia Gonzalez-martin
 (409) 693-0017
Business Contact
Phone: () -
Research Institution

Semiconductor-catalyzed photooxidation of chemical waste is a comparatively recent development which offers several advantages over other know oxidation processes. The advantages include: 9i) no consumption of expensive oxidant; (ii) catalyst is non- hazardous; (iii) the photocatalytic reactions may be driven by sunlight, and (iv) the oxidation is powerful and leads to the mineralization of the majority of organic contaminants. However, because only about 1% of the solar spectrum is utilized by highly oxidizing semiconductor catalysts, the quantum yield of photooxidation reactions has to be optimized. This project pursues the development of an innovative approach to increase the rate of the photocatalytic mineralization of chemical waste, which can be used both in the gas and liquid phases. This approach is based on combining two technologies: (i) photocatalytic oxidation using the porous semiconductor membranes, and (ii) Lynntech's electrochemical process for generation of highly concentrated ozone. It is expected that the use of ozone as a reactant in the semiconductor membrane photocatalytic reactor will increase the rate of photooxidation reactions by 2-4 orders of magnitude compared to other enhanced photocatalytic processes. Lynntech, Inc. will adopt a dual-use development approach because the combined technologies have the potential for waste degradation in both Army and commercial applications.

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