Probing interactions between organic matter and copper in stormwater and wastewater, Jeff Nason, Oregon State

Details

Copper is an essential micronutrient that can also exert toxicity on aquatic species if present at elevated concentrations. Toxicity is primarily associated with the free cupric ion (Cu+2), the concentration of which is strongly influenced by complexation with organic matter. Stormwater and wastewater represent sources of copper pollution. Further, the organic matter present in these waste streams likely differs from naturally occurring organic matter due to the nature of the processes involved and the likely presence of anthropogenic chemicals. This talk will share the results of our research utilizing voltammetric and mass spectrometry methods to identify and characterize the organic matter present in stormwater and wastewater with respect to interactions with copper. These results have the potential to inform treatment strategies and environmental regulations.

Jeff Nason is a Professor of Environmental Engineering and Head of the School of Chemical, Biological, and Environmental Engineering at Oregon State University. His research interests and expertise are in the area of water quality and treatment, with specific focus on particulate contaminants, physical and chemical processes, and aquatic chemistry. Recent work has focused on the fate and transport of engineered nanomaterials and micro/nanoplastics in aquatic systems and the role of natural organic matter in controlling the chemical speciation and treatment of heavy metals in stormwater and wastewater. He is also engaged in engineering education research, with ongoing projects investigating the affordances and constraints of virtual laboratories relative to their physical counterparts.