Hydroxyl Radical Formation during Ozonation of Multi-Walled Carbon Nanotubes: Performance Optimization and Demonstration of a Reactive CNT Filter
Dr. Cwiertny and his lab at the University of Iowa have invented a reactive filter consisting of immobilized carbon nanotubes (CNTs). In contrast to other forms of CNTs, the immobilized CNTs enhances disinfection and oxidation of pollutants in wastewater treatment systems when used in conjunction with the ozone system. Specifically, the presence of CNTs during ozonation promotes hydroxyl radical, the strongest oxidizing agent in water used during the Advanced Oxidation Process (AOP). Ultimately ozonation of CNT results in a new AOP mechanism that is more efficient and cost-effective in purifying wastewater. Our inventors have identified a permeable CNT layer immobilized on an inert filter support that can be integrated into wastewater treatment. Overall this invention could revolutionize the wastewater treatment industry by allowing large volumes of water to be treated with relatively low CNT masses.
美國
