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Öğe The investigation of kinetic and thermodynamic properties of the adsorption of trypan blue dyestuff by chitosan and chitosan phthalate(International Journal of Scientific and Technological Research, 2019-01) Ekinci, Selma; Güzel, FuatIn this article, toxic Trypan Blue dyestuff was uptaken from water by adsorption method. Chitosan and synthesized chitosan phthalate were used as adsorbents. Adsorption processes were consisted of kinetic and thermodynamic studies. First kinetical experiments were made and the results were practiced to Lagergren, Weber- Morris and Ho- Mckay equations. Adsorption rate constants (kads) and pore diffusion rate constants (kp) were calculated. Then, thermodynamic experiments were performed at different temperatures. Some thermodynamic parameters (ΔH, ΔG and ΔS) and adsorption isotherms were determined. Because Langmuir adsorption isotherms were more suitable, Langmuir constants were calculated. These experiments were performed with both chitosan and chitosan phthalate and the results were evaluated.Öğe Adsorption of toxic indigo carmen dyestuff from aqueous solution by chitosan and chitosan phthalate(Applied Chemical Engineering, 2018-11) Ekinci, Selma; Güzel, FuatToxic indigo carmen dyestuff was removed from the aqueous solution by adsorption. Adsorption was examined kinetically and thermodynamically based on temperature. Derivative of chitosan which is called chitosan phthalate was synthesized and used in removal of indigo carmen from aqueous solution. Some kinetic and thermodynamic parameters were calculated. Adsorption isotherms were drawn. Lastly, the adsorption of indigo carmen from the aqueous solution by chitosan and chitosan phthalate were compared.
