1. Adsorptive Removal of Toxic Dye Using Fe3O4-TSC Nanocomposite: Equilibrium, Kinetic, and Thermodynamic Studies.
- Author
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Alqadami, Ayoub Abdullah, Naushad, Mu, Abdalla, Mohammad Abulhassan, Khan, Mohammad Rizwan, and Alothman, Zeid Abdullah
- Subjects
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ADSORPTIVE separation , *LANGMUIR isotherms , *FREUNDLICH isotherm equation , *ADSORPTION capacity , *CHEMICAL equilibrium , *CHEMICAL kinetics - 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 (qe) 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. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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