Chitosan as a Widely Used Coagulant to Reduce Turbidity and Color of Model Textile Wastewater Containing an Anionic Dye (Acid Blue)

Abstract

Abstract The study focuses on using chitosan as a widely used coagulant (a biopolymer) to treat model textile wastewater containing an anionic dye (acid blue). Jar test experiments had been used in the coagulation-flocculation process. Acid Blue was selected as a model dye for testing chitosan’s ability to treat model textile wastewater. Chitosan is found from chitin by deacetylation. The biopolymers, because of biodegradable properties, availability and low cost have been used as coagulants. The dosage impact, pH, settling time, decolorization and turbidity reduction of simulated textile wastewater were studied. Chitosan showed great performance to remove turbidity and color. The usage of chitosan as a primary coagulant would decrease the cost of wastewater treatment. Besides, it is eco-friendly coagulant without harmful impacts.