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https://doi.org/10.1016/j.scitotenv.2019.01.060
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Título: | Reclamation of agro-wastewater polluted with pesticide residues using sunlight activated persulfate for agricultural reuse. |
Fecha de publicación: | 10-abr-2019 |
Editorial: | Elsevier |
Cita bibliográfica: | Science of the Total Environment. 660 (2019), 923-930 |
ISSN: | Print 0048-9697 Electronic 1879-1026 |
Palabras clave: | Broccoli irrigation Persulfate Pesticides Solar photocatalysis Water reuse |
Resumen: | The removal of 17 pesticides (pymetrozine, flonicamid, imidacloprid, acetamiprid, cymoxanil, thiachloprid, spinosad, chlorantraniliprole, triadimenol, tebuconazole, fluopyram, difenoconazole, cyflufenamid, hexythiazox, spiromesifen, folpet and acrinathrin) found in agro-wastewater from washing of containers and phytosanitary treatments equipment, has been carried out using sodiumpersulfate (Na2S2O8) at pilot plant scale under natural sunlight. Persulfate is a strong oxidant, inexpensive and environmentally appropriate. However, this oxidant is slow in kinetics under ordinary conditions. Na2S2O8 can be activated by ultraviolet light, generating SO4•− radicals, which are also a very strong oxidizing species (E0= 2.6 V). Previously, preliminary experiments were carried out at laboratory scale using a photoreactor to optimize the Na2S2O8 (300 mg L−1) concentration on the rate constants of the found pesticides. The residual levels of the studied pesticides in agro-wastewater (900 L) were in the range 0.02–1.17 mg L−1 for acrinathrin and fluopyram, respectively. After treatment, nearly complete degradation (N97%) of the parent molecules was achieved although 13% of initial DOC was measured. No significant differences (p b 0.05) were found when comparing grown broccoli using reclaimed and unreclaimed water. |
Autor/es principal/es: | Vela, Nuria Fenoll, José Garrido, Isabel Pérez-Lucas, Gabriel Flores, Pilar Hellín, Pilar Navarro, Simón |
Facultad/Departamentos/Servicios: | Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Química Agrícola, Geología y Edafología |
URI: | http://hdl.handle.net/10201/138359 |
DOI: | https://doi.org/10.1016/j.scitotenv.2019.01.060 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 8 |
Derechos: | info:eu-repo/semantics/embargoedAccess |
Matería geográfica: | Region of Murcia |
Aparece en las colecciones: | Artículos: Química Agrícola, Geología y Edafología |
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Fichero | Descripción | Tamaño | Formato | |
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1-s2.0-S004896971930066X-main.pdf | 620,86 kB | Adobe PDF | Visualizar/Abrir Solicitar una copia |
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