The Removal of Methylene Blue Dye from Industrial Wastewater by Using Chitosan

Abstract

The paper focuses on treating industrial wastewater contaminated with methylene blue using chitosan powder as an adsorbent. Chitosan is well recognised in diverse fields and readily available at low cost. Chitosan is derived from marine fish scale waste. The study used methylene blue dye at various concentrations ranging from 50 to 200 mg / L. Experimental experiments were carried out at different temperatures ranging from 25 to 40 °C to evaluate the efficacy of chitosan in dye removal. Kinetic and kinetic equilibrium experiments were performed, and the thermodynamic properties of the system were studied. The results showed that chitosan effectively removed the methylene blue die from the polluted industrial wastewater. At 25 °C, the removal efficiency was found to be 94%. Overall, this study demonstrates the possibility of using chitosan as an adsorbent to treat industrial wastewater contaminated with methylene blue. It was found through the equipoise test that the adsorption process occurs through the first 30 minutes of the adsorption process start of the adsorption process. Chitosan was an excellent and effective substance in removing dye contaminants from industrial water. It was observed that Freundlich's law obeyed the absorption process, and the error rate was much better than the Langmuir model. Simultaneously, the kinetics followed the second-order model better than the first-order model with R2= 0.999.