Dr. Johnston is an assistant professor of environmental engineering who specializes in the aquatic and surface geochemistry of environmental pollutants. He holds a PhD from the University of Connecticut, where he served for two years as an assistant professor in residence before joining Loyola Chicago in 2015.  His research focuses primarily on molecular-scale aspects of contaminant fate in natural and engineered systems.  Outcomes of this work have applications in contaminant transport modeling, water treatment, and environmental remediation.