Publication: Photocatalytic degradation of four insecticides and their main generated transformation products in soil and pepper crop irrigated with reclaimed agro-wastewater under natural sunlight.
Authors
Aliste, Marina ; Garrido, Isabel ; Flores, Pilar ; Hellín, Pilar ; Pérez-Lucas, Gabriel ; Navarro, Simón ; Fenoll, José
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.jhazmat.2021.125603
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info:eu-repo/semantics/article
Description
Acceso restringido
Abstract
This work is the first-ever study of the concurrence of four insecticides (chlorantraniliprole, imidacloprid, pirimicarb and thiamethoxam) and their main transformation products (TPs) in soil and pepper crop irrigated with
reclaimed and non-reclaimed water under agricultural field conditions. Field experiments were conducted using
different irrigation supplies: control water (CW), wastewater polluted with phytosanitary commercial products
containing the studied insecticides (WW) and reclaimed wastewater after a photocatalytic processing with TiO2/
Na2S2O8 at pilot plant under sunlight (RWW). Photocatalytic treatments removed most of the insecticides and
their TPs generated during the photoperiod. Neither target insecticides nor their TPs were detected in pepper
samples when CW and RWW were used as irrigation source, whereas the four insecticides and two TPs were
detected when WW was used. In the experiment carried out with WW, all insecticides and eight TPs were
detected in soil samples. The impact of using reclaimed water on the quality of pepper crop was also assessed,
showing barely any significant difference.
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Citation
Journal of Hazardous Materials, Volume 414, 2021, 125603
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