Kinetic Study of Gelatin/Chitosan based nanocomposites for acid red 150 dye adsorption using ultrasonic energy

Abstract

THE EFFECT of acid red 150 dye (AR150) adsorption parameters onto the prepared gelatin/chitosan/laponite based nanocomposites (NC I, II, III and IV) such as dye concentration, contact time, pH, and sorbent amount using ultrasonic energy had been studied. The standard adsorption affinity through the adsorbent suitability was also carried out. The results revealed that high concentrations of AR150 and chitosan content led to an increasing in the adsorption rate. A comparison between adsorption kinetics of the prepared nanocomposites with conventional and ultrasonic techniques was investigated. The time/dye-uptake isotherms were declared the improvement of dye adsorption in the second phase. Adsorption rate, reaction half-time and standard affinities were also studied. The dye adsorption uptake using ultrasound technique was higher than that in case of the conventional one in case of all the used nanocomposites. On the other hand, in case of using ultrasonic technique, the isotherms showed high dye uptake. In other words, the best dye adsorption rate could be obtained at different nanocomposite concentrations 0.3 and 0.8 g/L in case NCIII and IV, respectively.