Turbidity, Color and Chemical Oxygen Demand Removals from Synthetic Textile Wastewater Using Chitosan as a Coagulant

Abstract

The study investigates the performance of chitosan as a coagulant towards a treatment of synthetic wastewater by combined process of coagulation-flocculation followed by granular filtration. In this study, chitosan used due to some novel characteristics of coagulants such as non-toxic, ecosystem appropriate characteristic, biodegradability, etc. The optimum conditions for this study were at 40 mg/l of chitosan, 5 mg/l of dye, the reduction percentage is further than 98.5%, 92.5% and 94.2% for color, turbidity and chemical oxygen demand (COD) individually. In conclusion, chitosan is an effective coagulant, which can be used to remove certain pollutants with a high percentage from textile wastewater.