Adsorption Use to Reduce Water Pollution

Abstract

The adsorption of chlorphenol and phenol from aqueous solutions of individual components and their mixtures on active coals (AC) differing in nature, structure, specific surface has been studied. The main regularities, features and mechanism of adsorption of organic components on AU have been established. The mechanism of mass transfer during adsorption of a mixture of chlorophenol and phenol on AU of different grades is shown. A method for optimizing the parameters and modes of the continuous adsorption purification process is proposed. The coincidence of the experimental and theoretically calculated output curves confirms the validity of the proposed approach to the modeling of adsorption dynamics and makes it possible to determine the dynamic characteristics of adsorption without carrying out additional experimental studies. Based on the results of experimental studies and derivatographic analysis, a technology for the regeneration of active carbons was developed after adsorption of a mixture of phenol and chlorophenol by heating with an air stream at a temperature of 250 °C for 2 hours. On the basis of a complex study of the adsorption of organic substances, optimization of the purification regime and parameters of the adsorption column using mathematical modeling, an adsorption technology for wastewater treatment providing resource saving and environmental protection has been developed.