DYESTUFFS REMOVAL FROM SYNTHETIC WASTEWATER WITH CHITOSAN, CROSS-LINKED CHITOSAN AND CHITOSAN-POLY (ACRYLIC ACID) CONJUGATE

Abstract

Remazol Brillant Blue R (RBBR) and Naphthol Blue Black (NBB) dyestuffs are commonly utilized in the textile industry. In this study, RBBR and NBB dyestuffs were removed with chitosan, cross-linked chitosan and chitosan-poly(acrylic acid) (PAA) conjugate. Cross-linked chitosan and chitosan-poly(acrylic acid) conjugate were synthesized at 15 and 30 minutes respectively by using microwave energy. RBBR dyestuff was removed 70.23 % and 80.78 % at pH: 4.0 and pH: 5.0 respectively by chitosan-poly(acrylic acid) conjugate. NBB and RBBR were removed higher percent with crosslinked chitosan than chitosan-poly(acrylic acid) conjugate at acidic pHs. NBB and RBBR were removed successfully with approximately 100 % dye removal percentage using both chitosan and cross-linked chitosan.