Preparation and Study of Layered Double Hydroxides (LDHs) for the Adsorption of Glyphosate Contaminant

This study investigates the synthesis of Layered Double Hydroxides (LDHs) modified with organic surfactants (Pluronic P123 and BTC) for the adsorptive removal of the herbicide glyphosate from aqueous media. ZnAl-LDHs were produced via coprecipitation, and their structural properties were confirmed by powder X-ray diffraction, revealing characteristic interlayer spacings consistent with nitrate, carbonate, and BTC intercalation. A colorimetric quantification method using ninhydrin and sodium molybdate was successfully established, yielding a reliable calibration curve for glyphosate detection. Preliminary adsorption tests demonstrated that the different LDH compositions exhibit varying glyphosate removal efficiencies. These findings provide a foundation for developing efficient adsorbents, with future work focusing on kinetic and isotherm studies to optimize the remediation process.