Adsorptive Removal of Toxic Dye Using Fe3O4–TSC Nanocomposite: Equilibrium, Kinetic, and Thermodynamic Studies

• Published in: Journal of chemical and engineering data Vol. 61; no. 11; pp. 3806 - 3813
• Main Authors: Alqadami, Ayoub Abdullah, Naushad, Mu, Abdalla, Mohammad Abulhassan, Khan, Mohammad Rizwan, Alothman, Zeid Abdullah
• Format: Journal Article
• Language: English
• Published: American Chemical Society 10.11.2016
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/acs.jced.6b00446

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.