Preparation, characterization of chitin-based activated carbon for Orange II removal

Chitin-based activated carbon (CAC) was prepared by a two-step process of carbonization and potassium carbonate chemical activation. The CAC characterized using scanning electron microscopy (SEM), N2 adsorption/ desorption, Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS). adsorption performance for Orange II (O II) evaluated in terms contact time, temperature, initial concentration, kinetics, isotherms, thermodynamics. had surface area 1320 m2 g-1 total pore volume 1.10 cm3 g-1. maximum monolayer capacity 1010 mg at 318.2 K O II, respectively. Equilibrium isotherms showed that the Langmuir model higher coefficient determination than Freundlich model. thermodynamic results indicated onto 800 spontaneous endothermic. Given this work, can be used as an efficient adsorbent removal dyes from wastewater.