Olya Keen was a graduate student with Dr. Linden from 2009-2012 and graduated with a Ph.D. in Environmental Engineering. Â During her time at the University of Colorado Boulder she was a EPA STAR Fellow and researched advanced oxidation of pharmaceuticals in wastewater. Â After graduation, she went on to work as an Assistant Professor at the University of North Carolina at Charlotte. Currently she is an Associate Professor.Â