Abstract
Herein, trisodium citrate based, magnetite nanocomposite (Fe3O4-TSC) was used for malachite green (MG) dye expulsion from aqueous medium. The adsorption tests were executed at different parameters. The maximum adsorption were took place at pH 4 in 40 min. The equilibrium studies were demonstrated using Langmuir and Freundlich isotherms and better agreement was attained with the Langmuir model. The maximum adsorption capacity (q(e)) was calculated 435 mg g(-1) using Langmuir equation. The kinetic parameters displayed that MG adsorption onto Fe3O4-TSC followed pseudo-second-order kinetic model. Furthermore, the thermodynamic analysis suggested the adsorption of MG onto Fe3O4-TSC was impulsive and exothermic. The desorption studies showed the best recovery of MG dye in 0.1 M HCl. Finally, it was found that Fe3O4-TSC can be effortlessly separated from mixed solutions using external magnetic field.