The Treatment Of Wastewater Containing Aromatic Compounds And The Deposition Of Silver Nanoparticles

This thesis consists two sections: the adsorption of aromatic compounds by adsorbent resin and the deposition of silver nanoparticles onto humic acid-coated silica surface.The discharge of untreated wastewaters containing extraordinarily toxic aromatic compounds, such as phenols and anilines, is very harmful. Adsorbent resins have significant advantages in wastewater treatment to remove aromatic compounds. Though most research to date has focused on the adsorption of pollutants in pure component system, industrial wastewaters often contain many kinds of pollutants. In aromatic weak acid—weak base mixture systems, one adsorbate with Lewis acid functional group and another with basic group lead the intermolecular interactions more complicated, and the adsorption behaviors and mechanism onto adsorbent resin are not thoroughly understood. In this dissertation the static equilibrium adsorption of phenol, aniline, p-chlorophenol, p-chloroaniline in pure component systems, phenol—aniline and p-chlorophenol—p-chloroaniline in two-component systems on DA201-CⅡwere investigated at different temperatures. The results show that all the adsorption isotherms of pure component systems correlated with Freundlich equation within the studied range of temperature and concentration, and the adsorption capacity follows the order phenol