Rapid Adsorption of Crystal Violet onto Magnetic Zeolite Synthesized from Fly Ash and Magnetite Nanoparticles

Olusola S. Amodu^1,2*, Tunde V. Ojumu¹, Seteno K. Ntwampe³, Olushola S. Ayanda⁴

¹Department of Chemical Engineering, Cape Peninsula University of Technology, Cape Town, South Africa.
²Department of Chemical Engineering, Lagos State Polytechnic, Lagos, Nigeria.
³Department of Biotechnology, Cape Peninsula University of Technology, Cape Town, South Africa.
⁴Department of Industrial Chemistry, Federal University Oye Ekiti, Oye Ekiti, Nigeria.

DOI: 10.4236/jeas.2015.54016                

Abstract

This work reports the adsorption of crystal violet (CV) dye onto magnetic zeolite (MZ) nanoparticles, synthesized by direct fusion of fly ash (FA) and magnetite particles. The synthesised MZ showed high capacity for CV dye adsorption, removing 95% of the dye at an equilibrium adsorption time of 10 min and 25℃. The effects of adsorbent dosage, dye concentration, and pH, on adsorption were evaluated. Adsorption data were best described by the Langmuir adsorption isotherm (R² = 0.9986), while the adsorption kinetics was best fitted by the pseudo-second-order kinetic model (R² = 0.9999). Application of the MZs synthesised from inexpensive resources such as FA could ensure the sustainability and cost effectiveness of treating industrial effluent containing basic dyes, especially effluent from the textile industries.

Keywords

Adsorption, Crystal Violet Dye, Fly Ash, Magnetic Zeolite, Kinetics, Isotherm

Conflicts of Interest

The authors declare no conflicts of interest.

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