Dr. Hui Zhang works as a faculty member in School of Environmental Science and Engineering, Shanghai Jiaotong University. He have been on the subject of pollutant behavior in environment for near 30 years, with valuable achievements such as many books and papers. As the PI of the Research Group of Pollutant Behavior Chemistry of Shanghai Jiaotong University, his recent interests mainly focus on the impacts of human activity in geo-chemical cycles of substances on water and soil quality change (trace metals, arsenic, nitrogen, phosphorus and persistent organic pollutants) in natural and engineered systems (water, soil, and pollutant treating systems). Favorite researches are in four main areas: (1) Metals, nitrogen, phosphorus in soil and sediment; (2) Arsenic geochemistry and health; (3) Behaviors and controlling for pollutants (inorganic and organic) in the treatment of sewage sludge; and (4) Inactivation remediation for the metal contaminated soil.