Dr. Tiezheng Tong is currently an assistant professor of Environmental Engineering at Colorado State University (CSU). Prior to joining CSU, he worked as a postdoc fellow in the Department of Chemical and Environmental Engineering at Yale University. He received his Ph.D. degree in Civil and Environmental Engineering from Northwestern University, M.S. degree in Environmental Engineering from Tsinghua University, and B.S. degree in Environmental Engineering from Beijing Normal University (with the highest honor). He is the leading author or co-author of >50 peer-reviewed journal articles, which have been published on high-profile journals such as Nature Communications, Energy & Environmental Science, and Environmental Science & Technology. His review article on zero liquid discharge (ZLD, Environ. Sci. Technol.) has been cited more than 300 times globally. He is also the recipient of several academic and professional awards, including the Young Membrane Scientist Award from North American Membrane Society, Environmental Chemistry Graduate Student Award from American Chemistry Society, and a student award from Sustainable Nanotechnology Organization. His research interests include (i) membrane-based technologies for sustainable water supply; (ii) energy-efficient treatment of hypersaline brines; and (iii) industrial wastewater treatment for the energy sector.