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Título: | Application of a biosorbent to soil: a potential method for controlling water pollution by pesticides |
Autor: | Álvarez Martín, Alba CSIC; Rodríguez Cruz, M. Sonia CSIC ORCID ; Andrades, M. Soledad CSIC ORCID; Sánchez Martín, M. Jesús CSIC ORCID | Palabras clave: | Biosorbents Spent mushroom substrate Immobilization Soil Non-polar pesticides Polar pesticides Water pollution |
Fecha de publicación: | feb-2016 | Editor: | Springer Nature | Citación: | Environmental Science and Pollution Research 23(9): 9192-9203 (2016) | Resumen: | Different strategies are now being optimized to prevent water from agricultural areas being contaminated by pesticides. The aim of this work was to optimize the adsorption of non-polar (tebuconazole, triadimenol) and polar (cymoxanil, pirimicarb) pesticides by soils after applying the biosorbent spent mushroom substrate (SMS) at different rates. The adsorption isotherms of pesticides by three soils and SMS-amended soils were obtained and the adsorption constants were calculated. The distribution coefficients (Kd) increased 1.40–23.1 times (tebuconazole), 1.08–23.7 times (triadimenol), 1.31–42.1 times (cymoxanil), and 0.55–23.8 times (pirimicarb) for soils amended with biosorbent at rates between 2 and 75 %. Increasing the SMS rates led to a constant increase in adsorption efficiency for nonpolar pesticides but not for polar pesticides, due to the increase in the organic carbon (OC) content of soils as indicated by KOC values. The OC content of SMS-amended soils accounted formore than 90%of the adsorption variability of non-polar pesticides, but it accounted for only 56.3 % for polar pesticides. The estimated adsorption of SMS-amended soils determined from the individual adsorption of soils and SMS was more consistent with real experimental values for non-polar pesticides than for polar pesticides. The results revealed the use of SMS as a tool to optimize pesticide adsorption by soils in dealing with specific contamination problems involving these compounds. | Descripción: | 29 páginas, 3 figuras, 4 tablas. -- The final publication is available at Springer via http://dx.doi.org/10.1007/s11356-016-6132-4 | Versión del editor: | http://dx.doi.org/10.1007/s11356-016-6132-4 | URI: | http://hdl.handle.net/10261/130443 | DOI: | 10.1007/s11356-016-6132-4 | ISSN: | 0944-1344 | E-ISSN: | 1614-7499 |
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