THE KINETICS OF CHROMIUM(III) AND SODIUM SIMULTANTS ADSORPTION USING AMBERLITE IR-120 H (TEMPERATURE EFFECT REVIEW)

Liquid waste which containing Cr(III) and Na simultaneously is often found on output of industry activity, especially tannery industry. Cr(III) which is harmful metal must be able to be removed from this liquid waste. One of the methods which is effective is used to handle the pollution of Cr(III) in liquid waste that is ion exchange using ion-exchange resin. The principle of this method that is exchange of ions which are available on ion-exchange resin with ions on surrounding areas. The presence of Na in solution which is the place of Cr(III) is adsorbed using Amberlite IR-120 H, making this phenomenon as multicomponent adsorption. In this case, the adsorption of Cr(III) and Na by Amberlite IR-120 H occurs simultaneously. This research aims to study the rate of adsorption that occurs simultaneously at various temperatures. In addition, wants to develop a mathematical model to approximate the existing kinetics of simultaneous adsorption. The results showed that the higher the temperature, the greater the rate of simultaneous adsorption of Cr(III) and Na. The same trend was shown by value of constant of kinetics that it increased with increasing temperature. The mathematical model which was arranged based on rate equation of reaction was quite suitable to approached the kinetics of simultaneous adsorption. Based on activation energy for the adsorption of Cr(III) that its value was 56.735 kJ/mol, thus it was said that the rate of process was reaction-rate-limited.