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Numerical Modeling of Groundwater Pollution by Chlorpyrifos, Bromacil and Terbuthylazine. Application to the Buñol-Cheste Aquifer (Spain)

Author

Listed:
  • Ricardo Pérez-Indoval

    (Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València (IIAMA-UPV), 46022 Valencia, Spain)

  • Javier Rodrigo-Ilarri

    (Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València (IIAMA-UPV), 46022 Valencia, Spain)

  • Eduardo Cassiraga

    (Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València (IIAMA-UPV), 46022 Valencia, Spain)

  • María-Elena Rodrigo-Clavero

    (Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València (IIAMA-UPV), 46022 Valencia, Spain)

Abstract

Chlorpyrifos, Bromacil and Terbuthylazine are commonly used as insecticides and herbicides to control weeds and prevent non-desirable growth of algae, fungi and bacteria in many agricultural applications. Despite their highly negative effects on human health, environmental modeling of these pesticides in the vadose zone until they reach groundwater is still not being conducted on a regular basis. This work shows results obtained by version 5.08 of the Pesticide Root Zone Model (PRZM5) numerical model to simulate the fate and transport of Chlorpyrifos, Bromacil and Terbuthylazine between 2006 and 2018 inside the Buñol-Cheste aquifer in Spain. The model uses a whole set of parameters to solve a modified version of the mass transport equation considering the combined effect of advection, dispersion and reactive transport processes. The simulation process was designed for a set of twelve scenarios considering four application doses for each pesticide. Results show that the maximum concentration value for every scenario exceeds the current Spanish Maximum Concentration Limit (0.1 μg/L). Numerical simulations were able to reproduce concentration observations over time despite the limited amount of available data.

Suggested Citation

  • Ricardo Pérez-Indoval & Javier Rodrigo-Ilarri & Eduardo Cassiraga & María-Elena Rodrigo-Clavero, 2021. "Numerical Modeling of Groundwater Pollution by Chlorpyrifos, Bromacil and Terbuthylazine. Application to the Buñol-Cheste Aquifer (Spain)," IJERPH, MDPI, vol. 18(7), pages 1-21, March.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:7:p:3511-:d:525658
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    References listed on IDEAS

    as
    1. Trevisan, M. & Errera, G. & Goerlitz, G. & Remy, B. & Sweeney, P., 2000. "Modelling ethoprophos and bentazone fate in a sandy humic soil with primary pesticide fate model PRZM-2," Agricultural Water Management, Elsevier, vol. 44(1-3), pages 317-335, May.
    2. Javier Rodrigo-Ilarri & María-Elena Rodrigo-Clavero & Eduardo Cassiraga & Leticia Ballesteros-Almonacid, 2020. "Assessment of Groundwater Contamination by Terbuthylazine Using Vadose Zone Numerical Models. Case Study of Valencia Province (Spain)," IJERPH, MDPI, vol. 17(9), pages 1-17, May.
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