RT info:eu-repo/semantics/article
T1 Reusable and effective polyacrylic membranes for mecoprop and bentazon extractions
A1 Utzeri, Gianluca
A1 Guirado Moreno, José Carlos
A1 Cova, Tânia Firmino Guerra Guerreiro da
A1 Pais, Alberto A. C. C.
A1 Carvalho, Luís A. E. Batista de
A1 Ibeas Cortes, Saturnino
A1 García Pérez, José Miguel
A1 Valente, Artur J. M.
A1 Vallejos Calzada, Saúl
K1 Química orgánica
K1 Chemistry, Organic
K1 Polímeros
K1 Polymers
AB This study introduces reusable polyacrylic membranes, fabricated from commercially available monomers (1-vinyl-2-pyrrolidone and methylmethacrylate), as a promising approach for pesticide extraction. These membranes effectively remove the commonly used herbicides mecoprop (RE ≈ 99%) and bentazon (RE ≈ 95%) at low concentrations, which pose water contamination risks due to their water-soluble properties and leaf-level sorption. The membranes exhibit excellent manageability and resistance, allowing for safe handling without personal protective equipment. Additionally, the material is environmentally friendly and can be washed and reused for at least 4 cycles without a significant decrease in performance. Characterization techniques, including NMR, TGA, DSC, mechanical testing, N2 adsorption, and FTIR analysis, were used to investigate properties and assess the influence of the polymeric composition. The study focused on examining the lateral charged aminoethyl groups, which play a crucial role in sorbent-sorbate interactions. Sorption kinetics, isotherms, and permeation studies provided insights into the removal mechanism, efficiency, and permeability coefficients, revealing hydrophobic–hydrophobic interactions between the pesticides and the polymer. Molecular dynamics simulations revealed a scorpion-like conformation of the macromolecular chains surrounding the pesticides. These findings support the hydrophobic nature of the extraction mechanism and highlight the significant role of charged aminoethyl groups in facilitating this process.
PB Springer Nature
YR 2024
FD 2024-05-14
LK http://hdl.handle.net/10259/9179
UL http://hdl.handle.net/10259/9179
LA eng
NO We gratefully acknowledge the financial support provided by all funders. The financial support provided by Fondo Europeo de Desarrollo Regional-European Regional Development Fund (FEDER, ERDF) and Regional Government of Castilla y León -Consejería de Educación, Junta de Castilla y León- (BU025P23) is gratefully acknowledged. This work was supported by the Regional Government of Castilla y León (Junta de Castilla y León) and by the Ministry of Science and Innovation MICIN and the European Union NextGenerationEU PRTR. J.M.G. received grant PID2020-113264RB-I00 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe”. S.V. received grant BG22/00086 funded by Spanish Ministerio de Universidades. The authors also acknowledge Fundação para a Ciência e a Tecnologia (FCT), the Portuguese Agency for Scientific Research for the financial support through project UIDP/00313/2020. T.C. acknowledges the Junior Researcher Grant CEECIND/00915/2018 assigned by FCT. G.U. thanks FCT for the PhD grant SFR/BD/146358/2019.
DS Repositorio Institucional de la Universidad de Burgos
RD 24-nov-2024