Removal of Crystal violet Dye from Aqueous Solution Using Surfactant Modified NiFe2O4 as Nanoadsorbent; Isotherms, Thermodynamics and kinetics Studies

Authors

Mohammad Mahjoub Department of Chemistry, University of Guilan, Rasht, Iran

Nina Alizadeh Department of Chemistry, University of Guilan, Rasht, Iran

Abstract:

The removal of crystal violet from aqueous solution by NiFe2O4 magnetic nanoparticles treated with sodium dodecyl sulfate was investigated. The modified magnetic nanoparticles were prepared by chemical reaction of a mixture of Ni+2 and Fe+3 ions mixture in aqueous solution at the presence of ammonia and then sodium dodecyl sulfate was utilized as an ionic surfactant to modified the obtained magnetic nanoparticles. The morphologies of synthesized magnetic nanoparticles was characterized by electron microscopy techniques. The X–ray diffraction results confirmed the formation of magnetic nanoparticles with face centred cubic structure and the crystallite size was found to be 19 nm. The Fourier transform infrared spectrums confirmed the coating of sodium dodecyl sulfate on synthesized magnetic nanoparticles. The effects of different parameters, such as pH, initial concentration of dye and contact time were studied on the adsorption of crystal violet onto modified magnetic nanoparticles. The equilibrium data of dye adsorption were well fitted to the Freundlich adsorption isotherm. Adsorption kinetic was accommodated by a pseudo–second–order model and the results, obtained from Boyd plot indicated that the crystal violet adsorption onto modified magnetic nanoparticles was controlled by film diffusion. Thermodynamic parameters, such as changes in Gibbs free energy, enthalpy, and entropy were also determined. The calculated activation energy suggested physical adsorption of dye onto synthesized magnetic nanoparticles.

Upgrade to premium to download articles

Already have an account?login

similar resources

Removal of hexavalent chromium from aqueous solution using canola biomass: Isotherms and kinetics studies

The removing of hexavalent chromium from wastewater or decreasing its chromium (VI) content up to the permitted levels is important due to its non-biodegradation, bioaccumulation, and cancer-causing and toxic effects. In the present study, biosorption of Cr (VI) from aqueous solutions using canola was investigated. The various physicochemical parameters such as pH, initial Cr (VI) ion concentra...

full text

Removal of Basic Dye Bromophenol Blue from aqueous solution by Electrocoagulation using Al – Fe Electrodes: Kinetics, Equilibrium and Thermodynamics Studies.

Electrocoagulation (EC) in a batch cell with Al anode and Fe cathode in monopolar parallel (MP) connection was used for the removal of basic dye, Bromophenol Blue (BPB). The effects of current density, pH, temperature and initial dye concentration, on the process were investigated. Equlibrium data were analyzed using four model equations: Langmuir, Freudlinch, Temkin and Dubinin–Radushkevich. D...

full text

Application of Magnetic-modified Fe3O Nanoparticles for Removal of Crystal Violet from Aqueous Solution: Kinetic, Equilibrium and Thermodynamic Studies

The prepared magnetic-modified Fe3 O4 nanoparticles (Fe3 O4 -TAN) were used as adsorbent for removal of crystal violet (CV) from water solution. The effects of pH, contact time, dye concentration and temperature on adsorption were determined. The experimental data were analyzed using the Langmuir adsorption model. The data fitted well to the model with maximum adsorption capacities 84.0 mg/gund...

full text

Removal of caffeine from aqueous solution using multi-wall carbon nanotubes: kinetic, isotherm, and thermodynamics studies

The occurrence of contaminants in wastewaters, and their behavior during wastewater treatment and production of drinking water are key issues to re-use water resources. The present research aims to remove caffeine from aqueous solutions via adsorption technique, using Multi-Wall Carbon Nanotubes (MWCNTs) as an adsorbent under different experimental conditions. The processing variables such as p...

full text