Decolorization Study of Reactive Brilliant Blue KN-R by Activated Carbon from Rice Husk
Rice husk was modified into an activated carbon adsorbent under the microwave irradiation and character of the adsorption was studied on reactive brilliant blue KN-R. By using passive absorption method,experiments were done as a function of pH,temperature,contact time,initial concentrations and adsorbent doses. Results indicated that the adsorption capacity of rice bran activated carbon for reactive brilliant blue KN-R were found to be 303.03 mg/g and 384.62 mg/g when pH was 2 and 12 respectively. With the increase of temperature,the adsorption equilibrium time would be shortened. The adsorption was well described by Langmuir model pseudo-second-order model was found to explain the kinetics of adsorption most effectively. The thermodynamics constants of adsorption process showed that the adsorption was endothermic and spontaneous.