is a Regents Professor in the School of Sustainable Engineering and the Built Environment at Arizona State University and the Fulton Chair of Environmental Engineering. He was elected into the National Academy of Engineering in 2023.
He joined ASU in 1995 and after serving as the Civil and Environmental Engineering Department Chair he was the Founding Director for the School of Sustainable Engineering and the Built Environment. Since then he has served as an Associate Dean of Research in Engineering, ASU Vice Provost for Academic Programming, and Vice Dean for Research and Innovation in Engineering. He is currently the Director of the ASU Global Center for Water Technology.
He served as the Deputy Director of a National Science Foundation Nanosystems Engineering Research Center for Nanotechnology Enabled Water Treatment (newtcenter.org) and is Deputy Director of the NSF STC for Science and Technologies for Phosphorus Sustainability (https://steps-center.org/) & Director of the ASU Global Center for Water Technology. He has over 450 journal publications (ISI H-index>110) and multiple patents on his research related to fate of nanomaterials in water, developing novel technologies for water and reuse treatment, and understanding reactions related to the fate of pollutants during treatment or in natural systems with a focus on oxo-anions, natural organic matter and micropollutants.