Adsorption of Hydrocarbon Chloro-derivatives onto DTO Commercial Activated Carbon from Multi-component Aqueous Solutions

摘要

The adsorption equilibrium of seven chlorohydrocarbons in single-and multi-component aqueous solutions was investigated, The experimental data and theoretical analysis for the adsorption equilibria of chloroform (CHCl_3), carbon tetrachloride (CCl_4), 1, 2-dichloroethane (12DCE), 1, 1, 2, 2-tetrachloroethane (S-TET), vinylidene chloride (VDC), trichloroethylene (TRI) and tetrachloroethylene (PER) onto DTO activated carbon from single- and multi-component aqueous solutions were presented. Correlation of the experimental data was performed for a single-component solution using the Langmuir and Freundich equations. The composition of the mixture included all the above-mentioned chloro-derivatives. It was confirmed that the extent to which the component with a higher adsorption affinity in the multi-component solution was adsorbed was not influenced by components having a lower affinity in the mixture, irrespective of their concentration. The experimental data for both single- and multi-component adsorption allowed the development of a method for calculating the adsorption from a multi-component solution that was then used to correlate the data. The results of adsorption from multi-component equilibria were also correlated using the Langmuir and the Freundlich-Langmuir equations extended for multi-component solutions.