Assessment of spent mushroom substrate as sorbent of fungicides: influence of sorbent and sorbate properties

Journal of Environmental Quality
Jesús M Marín-BenitoM J Sánchez-Martín

Abstract

The capacity of spent mushroom substrate (SMS) as a sorbent of fungicides was evaluated for its possible use in regulating pesticide mobility in the environment. The sorption studies involved four different SMS types in terms of nature and treatment and eight fungicides selected as representative compounds from different chemical groups. Nonlinear sorption isotherms were observed for all SMS-fungicide combinations. The highest sorption was obtained by composted SMS from Agaricus bisporus cultivation. A significant negative and positive correlation was obtained between the K(OC) sorption constants and the polarity index values of sorbents and the K(OW) of fungicides, respectively. The statistic revealed that more than 77% of the variability in the K(OW) could be explained considering these properties jointly. The other properties of both the sorbent (total carbon, dissolved organic carbon, or pH) and the sorbate (water solubility) were nonsignificant. The hysteresis values for cyprodinil (log K(OW)= 4) were for all the sorbents much higher (>3) than for other fungicides. This was consistent with the remaining sorption after desorption considered as an indicator of the sorption efficiency of SMS for fungicides. Changes in the abs...Continue Reading

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Citations

May 9, 2014·Environmental Science and Pollution Research International·Isabel Rodríguez-SalgadoManuel Arias-Estévez
Feb 3, 2016·Environmental Science and Pollution Research International·Alba Álvarez-MartínMaría J Sánchez-Martín
Dec 29, 2015·International Journal of Phytoremediation·Z MagdziakP Goliński
Feb 19, 2017·Ecotoxicology and Environmental Safety·J M Marín-BenitoM J Sánchez-Martín
Oct 11, 2017·Environmental Science and Pollution Research International·Joyce CristaleSilvia Lacorte
Jan 20, 2019·Environmental Science and Pollution Research International·Borui LiuLiuye Sun

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