Synthesis, Characterization and Adsorption Properties of Protonated Cross-linked Chitosan for the Removal of Basic Blue 3 Dye from Wastewater

Abstract

Dye wastewater remediation is important for water treatment and adsorption is an effective treatment process. A modified protonated crosslinked chitosan (PCCH) was synthesized and compared with pure chitosan for a cationic basic blue 3 dye removal from an aqueous solution. Adsorbent were characterized using techniques such as SEM/EDX, FTIR, and BET analysis. Batch experiments were conducted under optimized pH, adsorbent
dosage and initial concentration at room temperature within a range of one hour. The highest adsorption efficiency was 91.93% and 58.97%, adsorption capacity 6.19 mg/g and 3.83 mg/g for PCCH and pure chitosan respectively. Result however fitted well with Langmuir isotherm and pseudo-second-order kinetics models(R2>0.99).

Keywords: Adsorbent, Adsorption, Basic Blue 3, Chitosan, Crosslinking, Wastewater