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Adsorption of Cl 2  out of aqueous media by TDRP (tire derived rubber particles) was investigated. For this propose batch system and sodium hypochlorite solutions were used on controllable conditions. The kinetic data were followed more closely to the pseudo-first-order model, the adsorption rate and the effecting parameters such as substrate initial concentration, the TDRP relative quantity, temperature, pH and ionic strength; were studied. The saturation equilibrium and the related parameters (initial concentration, temperature and pH) were also studied. The adsorption isotherm was established and compared to the activated carbon adsorption isotherm. Linearized Langmuir and Freundlich models were tried to estimate the adsorption constants. It was estimated through this study that the adsorption rate is positively affected by rising temperature, adsorbent concentration, TDRP relative quantity, and acidity. The adsorption equilibrium was shifted towards higher adsorption capacity by substrate concentration, temperature and acidity. The adsorption data could be applied to Freundlich and Langmuir and fitted more with Freundlich model. Activation enthalpy of adsorption, the adsorption thermodynamic parameters, the Freundlich and Langmuir constants were obtained.

Kinetics, Equilibrium, and Isotherm of the Adsorption of Chlorine by TDRP