Removal of Malachite Green Dye from Aqueous Solution Using MnO2 Nanocomposite in a Fixed Bed Column System

In this research, removal of cationic dye Malachite green dye (MG) was carried out using manganese dioxide sawdust nanocomposite (MnO2/SD NC) in a fixed bed column system. In order to find out the optimum adsorption conditions, the effect of important empirical parameters such as initial feed pH, initial concentration, bed depth and influent flow rate onto sorption capacities of the introduced adsorbent was investigated. The performance of MnO2/SD NC in fixed bed column system was evaluated using Adams-Bohart and Thomas kinetics models. The results of Thomas kinetic model showed that the system has maximum capacity 92/0 mg/g. Desorption investigation showed that the used column can be regenerated with high performance for reuse.