Removal of Methylene Blue Dye from Aqueous Solution Using Kaolin

Abstract

Abstract Freshwater resources were suffered from the pollution problems that resulted from pollutants of industries such as dyes and colourants. This study utilised a natural adsorbent, kaolin clay to remove pollutants’ dye (Methylene Blue) from aqueous solutions. Batch studies were conducted to evaluate the adsorption efficiency for dye removal from aqueous solution under varying conditions such as initial pH (pH), contact time, initial dye concentration on adsorption of dye. The optimum pH was found to be 6. The investigations in this study showed that 83% of dye removal can be achieved at the first 50th min. Meanwhile, 60 min was enough to reach the equilibrium state. Additionally, the results revealed that 100 mg/l of kaolin can lead to increase the 83 mg/g of adsorbed dye amount. The maximum removal was 89 % when the quantity of kaolin dosage increased to be 1.5 g. To sum up it, using kaolin as adsorbent material showed high efficiency to remove the dye which can be another addition for serious water pollution treatment efforts.