In this study, Chitosan and Chitosan-zinc oxide (ZnO) nanocomposite were prepared applied as a low-cost adsorbent with high adsorption capacity for removing reactive red 198 (RR 198) dye from contaminated water. After preparation, it was characterized using FT-IR, XRD, SEM. The effect of pH, temperature, time, amount, initial concentration investigated in the removal efficiency RR 198. maximum ...