Transport of thiophanate methyl in porous media in the presence of titanium dioxide nanoparticlesTransport of thiophanate methyl in porous media in the presence of titanium dioxide nanoparticles Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2025-06-042023enHuman activities in modern life are contributing significantly to global environmental pollution. With the need for clean drinking water ever increasing, so does the need to find new water-cleaning technologies. The ability of nanoparticles (NPs) to remove persistent pollutants from aqueous solutions makes them very important for use in water treatment technology. Titanium dioxide (TiO2) is recognized as an NP with unique optical, thermal, electrical, and magnetic properties and is widely used as an adsorbent material. Due to the extensive use of pesticides, their removal from the aquatic environment has gained widespread attention from the scientific community. In the present work, the transport of pesticide thiophanate methyl (TM), as well as the cotransport of TM and TiO2 nanoparticles, in a water-saturated column packed with quartz sand under various water conditions were investigated. Several ionic strengths (1, 10, 50, and 100 mM) and pH values (3, 5, 7, and 10) were examined. The results from the transport experiments were fitted and analyzed with the use of the ColloidFit software, while the results from the cotransport experiments were fitted with a modified version of a recently developed mathematical cotransport model. The results of this study suggested that the lowest mass recovery rate was for the cotransport experiments with the addition of NaCl. Furthermore, it was shown that TM has a weak affinity for sand but a relatively strong affinity for TiO2 at high ionic strength and acidic pH, probably accounting for the reduced mass recovery of TM in cotransport experiments.This project received funding from the Partnership for Research and Innovation in the Mediterranean Area (PRIMA), under grant agreement number: 1923-InTheMED.http://creativecommons.org/licenses/by/4.0/Water157Stefanarou_et_al_Water_ 15(7)_2023.pdfChania [Greece]Library of TUC2025-06-04application/pdf1.6 MBfree Stefanarou Anthi Στεφαναρου Ανθη Katzourakis Vasileios Fu Fenglian Malandrakis Anastasios Μαλανδρακης Αναστασιος Chrysikopoulos Constantinos Χρυσικοπουλος Κωνσταντινος MDPI Nanoparticles Titanium dioxide Pesticides Thiophanate methyl Cotransport Porous media Quartz sand Column experiments