EGU23-2118
https://doi.org/10.5194/egusphere-egu23-2118
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Transport of thiophanate methyl in porous media in the presence of titanium dioxidenanoparticles

Constantinos V. Chrysikopoulos1,2, Anthi S. Stefanarou2, Vasileios E. Katzourakis2, and Anastasios A. Malandrakis2
Constantinos V. Chrysikopoulos et al.
  • 1Department of Civil Infrastructure and Environmental Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAE (constantinos.chrysikopoulos@ku.ac.ae)
  • 2Technical University of Crete, Environmental Engineering Laboratory, Chania, Greece (cvc@enveng.tuc.gr)

This study investigates the transport of pesticide thiophanate methyl (TM) as well as the co-transport of TM and titanium dioxide (TiO2) nanoparticles in a water saturated column packed with quartz sand under various water conditions. Several ionic strengths (Is) (1, 10, 50 and 100 mM) and pH (3, 5, 7, 10) values were examined. The results from the transport experiments  were fitted and analyzed with the use of the ColloidFit software, while the results from cotransport experiments were fitted with a modified mathematical model of Katzourakis and Chrysikopoulos (2015). The results suggested that the lowest mass recovery rate was for the co-transport experiments with the addition of NaCl. It was shown that TM has a weak affinity for sand but a relatively strong affinity for TiO2 at high Is and acidic pH. Furthermore, salinity was shown to have significant effects on TM removal.

How to cite: Chrysikopoulos, C. V., Stefanarou, A. S., Katzourakis, V. E., and Malandrakis, A. A.: Transport of thiophanate methyl in porous media in the presence of titanium dioxidenanoparticles, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-2118, https://doi.org/10.5194/egusphere-egu23-2118, 2023.