Cotransport of human adenoviruses with clay colloids and TiO2 nanoparticles in saturated porous media: effect of flow velocityCotransport of human adenoviruses with clay colloids and TiO2 nanoparticles in saturated porous media: effect of flow velocity Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2018-03-162017enThis study focuses on the effects of two clay colloids (kaolinite, KGa-1b and montmorillonite, STx-1b) and titanium dioxide (TiO2) nanoparticles (NPs) on human adenovirus transport and retention in water saturated porous media at three different pore water velocities (0.38, 0.74, and 1.21 cm/min). Transport and cotransport experiments were performed in 30-cm long laboratory columns packed with clean glass beads with 2 mm diameter. The experimental results suggested that the presence of KGa-1b, STx-1b and TiO2 NPs increased human adenovirus inactivation and attachment onto the solid matrix, due to the additional attachment sites available. Retention by the packed column was found to be highest (up to 99%) in the presence of TiO2 NPs at the highest pore water velocity, and lowest in the presence of KGa-1b. The experimental results suggested that adenoviruses would undergo substantial aggregation or heteroaggregation during cotransport. However, no distinct relationships between mass recoveries and water velocity could be established from the experimental cotransport data. Note that for the cotransport experiments, collision efficiency values were shown to be higher for the higher flow rate examined in this study.http://creativecommons.org/licenses/by/4.0/Science of the Total Environment598160-167 Syngouna Vasiliki Συγγουνα Βασιλικη Chrysikopoulos Constantinos Χρυσικοπουλος Κωνσταντινος Κόκκινος Πέτρος Α. Kokkinos Petros A. Τσελέπη Μαρία Α. Tselepi Maria A. Βανταράκης Απόστολος Vantarakis Apostolos C. Elsevier Clay minerals Cotransport Human adenoviruses Porous media TiO2 nanoparticles