REMOVAL OF MALACHITE GREEN A CATIONIC DYE FROM WASTEWATER VIA ADSORPTION ON FISH BONES

摘要

In this study, the removal of Malachite Green synthetic dye from aqueous environment was investigated using Sparus aurata as a source of fish bone. The removal efficiency of the adsorbent was investigated as a function of time and dye concentration via batch method at room temperature. The correlation coefficient values indicate that the data fit the Freundlich Isotherm (R2= 0,9861) better than the Langmuir Isotherm (R2=0,3695). The thermodynamic and reaction kinetic of Malachite Green from the aqueous solution were determined and correlated to pseudo-second order kinetic models and the experimental data revealed that pseudo-second order kinetic model is available to experimental data. Gibbs free energy value was found to be -1.308 kJ/mol and indicating the spontaneity of the system. Thermodynamic parameters exhibited that the adsorption process was spontenous (AG<0). According to the experimental results, the Sparus aurata bone can be used as an appropriate adsorbent for the removal of Malachite Green synthetic dye.