نوع مقاله : پژوهشی
عنوان مقاله English
نویسندگان English
In the present study, glucosamine-modified Fe3O4@SiO2-TCT-GA nanosorbents were synthesized and their ability to separate lead ions from aqueous solutions was investigated. The effects of parameters affecting the adsorption efficiency, including adsorption isotherms, adsorbent dose, adsorbent contact time, selective removal, and solution pH, on the adsorption behavior were evaluated and discussed. Kinetic adsorption tests showed a better fit with the pseudo-second-order model, and the equilibrium data were in good agreement with the Langmuir model, which estimated the maximum Pb(II) adsorption to be 131.58 mg/g using this model. The desorption of heavy metal ions using HCl solution was effectively performed, and the results showed that the nanosorbent could be magnetically separated, regenerated, and effectively reused for seven consecutive cycles without significant loss of adsorption capacity.
کلیدواژهها English