Prof. Constantinos V. Chrysikopoulos received his B.S. in Chemical Engineering, from the University of California, San Diego (1982), M.S. in Chemical Engineering, from Stanford University (1984), Engineer Degree (1986) and Ph.D (1991) both in Civil and Environmental Engineering, from Stanford University. He worked: (1991-2004) in the Department of Civil and Environmental Engineering, the University of California, Irvine; (2004-2013) in the Department of Civil Engineering, the University of Patras, Greece, (2013-present) in the School of Environmental Engineering, Technical University of Crete, Greece. He is the author of 117 peer-reviewed articles in professional journals, 4 chapters in refereed professional books, 226 other publications, and his Web of Science h-index is 39 (web of Science), 47 (Google scholar). His research has focused on various experimental as well as theoretical aspects of contaminant transport in porous media and environmental systems. Current research areas include the fate and transport of biocolloids (viruses, bacteria) and nanomaterials in subsurface formations, transport of polydisperse colloids in natural fractures, dissolution of multi-component nonaqueous phase liquids in porous media, filtration, water quality, and wastewater treatment.