Pesticide treatment in biobed systems at microcosms level under critical moisture and temperature range using an Orthic Solonchaks soil from southeastern Mexico amended with corn husk as support.

Autor: Córdova-Méndez EA; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico., Góngora-Echeverría VR; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico. Electronic address: vilorene2@gmail.com., González-Sánchez A; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico., Quintal-Franco C; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico., Giácoman-Vallejos G; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico., Ponce-Caballero C; Facultad de Ingeniería, Universidad Autónoma de Yucatán, Av. Industrias no Contaminantes por Periférico Norte, Apdo. Postal 150, Cordemex, CP 97310 Mérida, Yucatán, Mexico. Electronic address: cponce@correo.uady.mx.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2021 Jun 10; Vol. 772, pp. 145038. Date of Electronic Publication: 2021 Feb 02.
DOI: 10.1016/j.scitotenv.2021.145038
Abstrakt: Agriculture effluents from cleaning and handling equipment used in pesticide applications can contaminate superficial and groundwater sources when not correctly disposed of. Biobeds using soil enriched with amendments represent a viable technology to control and minimize pesticide pollution of soil and water in farmlands. They are usually installed outdoors without protection, making them vulnerable to rain flooding, lack of moisture, drought, and intense heat or cold. Temperature (T) and moisture (M) of the biomixture are considered two of the most important physical factor affecting pesticide dissipation. This study aimed to evaluate the effect of T and M on the dissipation of five of the most used pesticides (carbofuran, atrazine, 2,4-D, diazinon, and glyphosate) in Yucatan State, Mexico. Three experiments using miniaturized biobeds considering optimal temperature and moisture (T of 30 ± 2 °C and 90% water holding capacity [WHC]) were performed. The optimal dissipation time and the effect of T, M variations, and volatilization was determined. The optimal dissipation time was over 14 days. Carbofuran was the least dissipated pesticide and glyphosate the most. The primary factor affecting pesticide dissipation was T (P < 0.05), reaching rates of dissipation of 99% at 45 °C. Variations of M in the biomixture were not significant on pesticide dissipation (P > 0.05). The white-rot fungi were observed; its presence was related to increments of T. Head Space analysis (at 45 °C) showed low pesticide volatilization (≤0.03%) for all pesticide used were quantified; water vapor condensation could reduce the pesticide volatilization for experimental conditions.
Competing Interests: Declaration of competing interest No financial or personal interests were involved in this research, and anyone is involved in the possible publication of this manuscript.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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