Removal of Reactive Dyes using Magnetically Separable Trametes versicolor Cells as a New Composite Biosorbent

Abstract

Magnetically modified Trametes versicolor cells were used for biosorption of Reactive Blue 13 (RB13), Reactive Yellow 85 (RY85) and Reactive Violet 1 (RV1). Percent biosorption values and maximum adsorption capacities of 98.30% and 135.35 mg g⁻¹ for RB13, 96.02% and 125 mg g⁻¹ for RY85, and 98.56% and 227.27 mg g⁻¹ for RV1 were observed under optimal conditions. The biosorption of all dyes was exothermic in nature. The biosorbent was characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and magnetic force microscopy. The Langmuir model was found to be most suitable for describing the biosorption of all dyestuffs. The experimental data fitted very well the pseudo second order kinetic model.

• biosorption
• nanoparticle Fe₃O₄
• Trametes versicolor

ACKNOWLEDGEMENTS

The authors would like to thank Seda Erol from the Department of Chemical Engineering for kinetic and thermodynamic calculations, Dr. Suat Pat from the Physics Department for conducting the magnetic force microscopy analysis, and Dr. Okan Zafer Yeşilel from the Department of Chemistry at Eskisehir Osmangazi University for the FTIR spectra of the biomass. This study is partially based on the MSc thesis of G. Cengiz.