Preparation and Properties of Amphiphilic Chitosan Derivative as a Coagulation Agent

摘要

A novel chitosan-based polymeric surfactant, Oleoyl-Carboxymethyl chitosan (O-CMCS) was produced as a coagulation agent to clean the residual oil from the wastewater of oil extraction (WWOE). O-CMCS was synthesized by reacting carboxymethyl chitosan (CMCS) with oleoyl chloride. The chemical structures of chitosan and its derivatives were characterized by FTIR. The destabilization of oil in water was successfully actualized by the application of O-CMCS (the optimal adsorbent with a dosage of 0.2 g/L; mixing time ≥3 min; the broader pH 0–8.05; the temperature ≤45°C; initial concentration of residual oil <140 mg/L), which showed a enhancement for the effective adsorption for the residue oil from WWOE.