Abstract
The contamination with toxic dyes is the most important problem facing all over the world for water sources, environment and living beings. Therefore, in present study, the removal of fuchsin dye from aqueous environment was investigated using fish bones as source of biogenic apatite to the best removal efficiency. The removal efficiency of the adsorbent was investigated as a function of contact time and initial dye concentration. The highest removal capacity was found to 14.75 mg/g. The experimental data generally exhibit a good compliance with the pseudo-second-order equation. Langmuir and Freundlich models were also applied to experimental equilibrium data to find the best adsorption isotherm. Weber-Morris and Urano-Tachikawa models were used to calculate diffusion constants. The results were showed that fish bones can be effectively used as a sorbent for the removal of basic dyes from aqueous solutions.
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