Guanyi Chen is a distinguished professor at Tianjin University of Commerce and Tianjin University, China. His research interests are solid wastes/biomass thermo-chemical conversion technology; recycling of solid waste; biochar preparation and its environmental use. He has published more than 400 articles in journals such as ES&T, WR, Nature Communications, Applied Energy, Biomass and Bioenergy, etc.

Ning Li is an associate professor at the School of Environmental Science and Engineering, Tianjin University, China. His research interests are environmental catalysis and advanced oxidation process; recycling of solid waste. He has published several articles in journals such as ES&T, WR, etc.

Zhanjun Cheng is a professor at the School of Environmental Science and Engineering, Tianjin University, China. His research interests are clean and efficient use of solid waste resources; pyrolysis reaction kinetics; catalysis science and technology. He has published several articles in journals such as JACS, ES&T, ACB, etc.