Main Article Content
In this work, cationic surfactant intercalated-montmorillonite (OMt) was prepared as adsorbent used for the removal of Reactive Red 120 (RR120) from aqueous solutions. The OMt and as received motmorillonite (Mt) were characterized by the FTIR, BET method, SEM, and XRD. The affecting factors such as contact time, initial dye concentration, initial pH, and temperature were investigated. The result revealed that adsorption of RR120 reached equilibrium at 480 minutes. The uptake of RR120 increased with temperatures, indicating an endothermic process. The adsorption capacity was slightly decreased with increasing in pH. Kinetics data were well described by the pseudo-second order model. The equilibrium data were better fitted by the Langmuir isotherm and the maximum monolayer adsorption capacity was 268.54 mg. g-1. These results suggested that the OMt is an effective adsorbent for removing RR120 from aqueous solutions.
Keywords: Adsorption, Reactive red 120, Cationic surfactant, Montmorillonite clay
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