7/1/2000 - 6/30/2002
- Marc Anderson, UW-Madison
The principal objective of this study is to develop and test inexpensive, high-performance photoactive adsorption media for the simultaneous removal of arsenite, As(III), and arsenate, As(V), from groundwater without pH adjustment. This process utilizes UV-irradiated photoactive thin films composed of novel mixed oxides prepared by sol-gel processing. These materials will be employed in a unique photocatalytic process, which simultaneously removes both arsenic species without additional pH adjustment or further chemical addition.
Aluminum oxide (Al2O3), spinel (MgAl2O4), and titanium oxide (TiO2) sols were synthesized by sol-gel technology and coated on glass beads. The adsorption efficiency of each coated material
was determined in a batch reactor.