Seymour S. Block
Ph.D., 1942, Pennsylvania State University (1944)
Professor Emeritus
Ph : 352-392-9102
block@che.ufl.edu
217 Chemical Engineering Building
 
Areas
Disinfection and Sterilization
Optimal growth of commercial mushrooms
 
 
Solar energy is Florida's most abundant waste product. While it is responsible for Florida's agricultural and forest products industries, as well as the tourist trade, 99 percent of the solar energy is just dissipated as heat.

We have studied he catalytically-enhanced use of the ultraviolet part of the solar spectrum for the destruction of disease-producing microorganisms in water and air. An innocuous, non-toxic chemical, titanium dioxide, which is employed as a whitener in paints and toothpaste, is catalyzed by solar UV to produce a powerful oxidant. We have demonstrated that solar radiation in the presence of titanium dioxide rapidly kills microorganisms. It also destroys chemical that produce obnoxious odors. Using lamps that generate solar ultraviolet, a device for purifying air with titanium dioxide has been developed and is now being marketed.

Research_Image
The oyster mushroom, grown on waste sawdust, was first produced in this department and is now grown commercially worldwide.
Recent Publications
1. Block, S.S., “Enhanced Photocatalytic Disinfection of Indoor Air,” Applied Catalysis B: Environmental, 65 (2006) 57.
2. Block, S.S., “Enhanced Photocatalytic Disinfection of Indoor Air,” Poster Presentation PERC (2005).
3. Block, S.S., “Effect of Relative Humidity on Photocatalytic Disinfection,” Poster Presentation PERC (2005).
4. Block, S.S., Benjamin Franklin: American Inventor, American History (2006).
5. Block, S.S., Before Sudoku, The World of Magic Squares, Oxford University Press (2008-9).
6. Block, S.S., Disinfection, Sterilization and Preservation, Fifth Edition, Lipincott-William & Wilkins (2000).