Abstract
Al-Tharwani, W.S., M.T. Mohammadali and I.M. Abd al-Ridha. 2024. The Effect of Silica Nanoparticles Addition on Removal of Glyphosate Residue from Aqueous Solutions. Arab Journal of Plant Protection, 42(2): 255-259. https://doi.org/10.22268/AJPP-001231 The aim of this study was to evaluate herbicide Tiller 48% SL (Glyphosate) residues in aqueous water by using silica nanoparticles as adsorption agent to remove glyphosate from aqueous solutions. Results obtained showed that when three concentrations of 10, 15 and 20 ml/L water were used, glyphosate concentration determined immediately after treatment was 3520, 5600 and 7955 mg/L, respectively. The concentration of the herbicide decreased with time and reached 1203 mg/L on the tenth day after treatment. No residues were detected by HPLC 21 days after treatment. The results of the study of the use of Nano-silica as an agent for the removal of glyphosate in aqueous solutions showed that the concentration 200 mg/L nano-silica achieved the highest rate of herbicide removal of 89.37%, outperforming the other two concentrations of 100 and 150 mg/L, which achieved 63.45 and 82.87% removal, respectively. Keywords: Glyphosate, residues, silica nanoparticles, adsorptio
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