Date of Award
Civil and Environmental Engineering
Enrique La Motta
As human population becomes diverse, the need for sustainable, inexpensive, scalable, and decentralized water treatment technologies to supplement or replace conventional treatment methods are important, especially to satisfy the need of small, rural communities for safe drinking water. These challenges can be somewhat met with the use of semiconductor photocatalysis, especially if the process is driven by visible light energy. Visible-light-active (VLA) photocatalysis can be effectively applied in disinfection of drinking water. In comparison to traditional, energy-intensive, physical and chemical disinfection methods, VLA photocatalysis is capable of providing high disinfection efficiency with the use of cheaper energy, no harmful by-products, and no addition of chemicals. Doped with noble metals, some photocatalysts can be improved to react under visible light, producing in-situ reactive oxidative species (ROS) to disinfect water. In this thesis, experiments show that the noble metal based photocatalyst Ag/TiO2/AgBr is promising in neutralizing coliform bacteria under visible light.
Upadhyaya, Ashraya, "Visible-light-active disinfection of surface water coliform using silver/titanium dioxide/silver bromide(Ag/TiO2/AgBr) as photocatalyst" (2020). University of New Orleans Theses and Dissertations. 2810.