Hui Liu is a professor at the School of Metallurgy and Environment, Central South University. He completed his PhD studies in Environmental Engineering at Shanghai Jiao Tong University and was awarded the Second Prize of the National Science and Technology Progress Award of China. He recently led the National Major Science and Technology Project of China. He has published more than 200 papers in various journals and serves as Deputy Director of the State Key Laboratory of Nonferrous Metal Strengthened Metallurgy New Technology and the National Engineering Research Center for Heavy Metal Pollution Control. His interests include air pollution control and resource recovery.