Removal of glyphosate from aqueous environment by adsorption using water industrial residual

►Alum sludge exhibited the potential to be an efficient and cost-effective adsorbent for glyphosate. ►The maximum glyphosate adsorption capacity computed by Langmuir isotherm is 85.875 mg/g for DAS and 113.636 mg/g for LAS. ►Glyphosate adsorption kinetics onto alum sludge can be described by the pseudo second-order model. ►Polymer (LT25) conditioning of the glyphosate-enriched LAS cannot lead to the further reduction of the glyphosate in the supernatant.