ACTIVATED CARBON PRODUCTION FROM VAN APPLE SHELL AND USE OF TEXTILE DYES ADSORPTION

In this study, chemical activation of carbon from Van apple shell, its characterization and usage in adsorption of textile dyes were investigated. Active carbon was prepared from apple shell by chemical activation with ZnCl2. Then, Malachite Green and Methylene Blue were used as dyes. In this research, the properties of prepared carbon were determined by BET, XRD, SEM, FTIR systems. Then characterization and zeta potential of these systems and adsorptions of dyes in liquid phase were investigated. SEM image, XRD pattern and IR spectrum show that no zinc is found at the surface of VAAC depending on the chemical activation process to prepare the activated carbon. There is no zinc particle at the surface on SEM image, no characteristic peaks and IR bands belonging to zinc or zinc forms are detected in the XRD pattern and IR spectrum. Experimental data were analysed using the Langmuir and Freundlich equations and equation constants were determined. Adsorption enthalpy (?H0) of thermodynamic parameters, Gibbs free enthalpy (?G0) and adsorption entropy (?S0) values were calculated. In addition, experimental studies have been conducted at four different temperatures, with different initial concentrations. The activated carbon which was obtained from apple pulp impregnated with ZnCl2 has remarkable BET surface area (1067.01 m2/g) with a well-developed pore structure and the average pore diameter is 2.46 nm. It is produced with a reasonable yield of 43%.