RT Journal Article
T1 Sorption/desorption and kinetics of atrazine, chlorfenvinphos, endosulfan sulfate and trifluralin on agro-industrial and composted organic waste
A1 Rojas Rodríguez, Raquel
A1 Repetto, Guillermo
A1 Morillo, J
A1 Usero, J
K1 Pesticide removal
K1 Organic residues
K1 Adsorption isotherms
K1 Desorption
K1 Kinetic models
AB The use of pesticides presents a risk to terrestrial and aquatic ecosystems. For this reason, the development of strategies to prevent and restore pollution is of the greatest interest, including the adsorption to organic matter. The aim of the present study was to investigate the sorption/desorption and kinetics of atrazine, chlorfenvinphos, endosulfan sulfate, and trifluralin onto several raw organic wastes by batch experiments. Three kinetic models were used to fit the obtained sorption kinetics data and two to fit the obtained adsorption isotherm data; both the Freundlich and pseudo-second-order kinetic models described the sorption isotherms well. The desorption study revealed hysteresis in all cases, showing strong, and not completely reversible, adsorption in most cases, with the exception of atrazine-sawdust and chlorfenvinphos-sawdust and chicken manure combinations, for which responses were weak and irreversible. The best kinetic, adsorption and desorption constants were achieved for the hydrophobic pesticides. With respect to sorption-desorption rates, orujillo was found to be the best adsorbent for atrazine, while composted urban solid waste was more suitable for trifluralin and endosulfan sulfate. Sorption constants and simple correlations indicated that, not only the organic matter content, but also the nature of the organic matter itself, and the pesticide and adsorbent properties, determine pesticide sorption-desorption. The use of wastes as efficient and cheap adsorbents for reducing the risk of pesticide pollution is proposed.
PB MDPI
YR 2022
FD 2022-02-14
LK https://hdl.handle.net/10433/26022
UL https://hdl.handle.net/10433/26022
LA en
NO Rojas R., Repetto G., Morillo J., Usero, J. Sorption/Desorption and Kinetics of Atrazine, Chlorfenvinphos, Endosulfan Sulfate and Trifluralin on Agro-Industrial and Composted Organic Wastes. Toxics (Basel) [BASEL], vol. 10, no. 2, no. 85, 2022, https://doi.org/10.3390/toxics10020085.
NO Universidad Pablo de Olavide. Departamento de Biología Molecular e Ingeniería Bioquímica
NO Universidad de Sevilla. Departamento de Ingeniería Química y Ambiental
DS RIO
RD May 7, 2026