Abstract
In light of the absence of appropriate techniques for pesticide monitoring and removal from industrial effluents in Egypt, a variety of steps should be taken. In this study, two selected pesticides, atrazine and fenitrothion, are monitored using a validated chromatographic method. The limit of detection for the selected pesticides ranged between 0.73 and 1.08 ng/mL, and their limit of quantitation was between 2.22 and 3.28 ng/mL. The method recovery was found to be more than 99% at different spiking levels. A novel natural polymer composite of chitosan/gelatin was prepared and utilized for the decontamination of pesticide wastewater samples. Detailed adsorption studies for atrazine and fenitrothion as model pesticides were carried out using Box–Behnken experimental design to investigate the influence of pH, initial pesticides concentrations, and amount of adsorbent on the adsorption capacity. Adsorption/desorption experiments were performed and chitosan/gelatin composite was able to maintain ≈70% of its pesticide’s removal efficiency after its third use. Adsorption study was carried out on synthetic pesticides wastewater samples using the prepared chitosan/gelatin composite (0.10 g/L) at the natural pH of solutions. The removal efficiency achieved by the proposed composite ranged from 87.13 to 94.48% for atrazine and 82.65 to 96.45% for fenitrothion.
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Attallah, O.A., Wafa, M.M.A., Al-Ghobashy, M.A. et al. Adsorptive removal of pesticides from aqueous solutions using chitosan/gelatin polymeric composite: process monitoring and optimization. Int. J. Environ. Sci. Technol. 19, 8183–8194 (2022). https://doi.org/10.1007/s13762-021-03694-4
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DOI: https://doi.org/10.1007/s13762-021-03694-4