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Award Information
Agency: Environmental Protection Agency
Branch: N/A
Contract: N/A
Agency Tracking Number: 30598
Amount: $65,000.00
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
12345 West 52nd Avenue
Wheat Ridge, CO 80033
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. Cecily Romero
 () -
Business Contact
 Mr. Michael E. Karpuk
Phone: (303) 940-2334
Research Institution

As demands for drinking water quality become increasingly stringent, new methodsfor educing contaminant levels to the low ppb range are being sought. Ofparticular concern is the reduction of trihalomethanes (THM's), reaction productsfrom chlorination of water in the presence of naturally occurring humic andfulvic acids. These compounds have been identified as probable carcinogens.Membrane filtration has demonstrated promising potential for removing the THMprecursors from the water prior to chlorination. A "molecular sieve" membranecould either remove these precursors from the water or remove the THM's from thefinished water stream.In Phase I, TDA Research will demonstrate that zeolite molecular sieve membranecan remove trihalomethanes and other impurities from water. The flux andretention characteristics of zeolite membranes are superior to the recentlydeveloped nanofiltration polymeric membranes. They will fabricated dense, crack-free zeolite filmsflux and retention of THM precursors and THMs and conduct an engineeringanalysis. In Phase II, TDA Research will design and fabricate a prototype of azeolite film module and demonstrate its ability to remove THM contaminants. Theywill investigate the fouling behavior and optimize cleaning techniques.

* Information listed above is at the time of submission. *

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