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High Silica Zeolites for the Removal of Polar Organic Contaminants from Water

By V. Bosi, E. Sarti, L. Pasti and A. Martucci


Efficient methods for the removal of polar organic\ud contaminants, a contaminant class that includes many\ud pharmaceutically active compounds, is an emerging concern in the\ud production of safe water. Recent research publications show that\ud the very favorable adsorption kinetics along with the effective and\ud highly irreversible adsorption make high silica zeolites [1, 2],\ud cheap and environmental friendly materials, applicable for the\ud treatment of contaminated water. Here, we report on the adsorption\ud properties of organophilic synthetic zeolites differing in topology,\ud SiO2/Al2O3 ratio, channel systems and free window apertures with\ud respect to commonly used drugs. In particular, the interaction\ud between different drugs, such as ketoprofen, hydrochlorothiazide\ud and atenolol (ATN) and organophilic zeolites was systematically\ud investigated by considering the effect of surrounding pH, ionic\ud strength, and thus chemical state of drugs, in order to evaluate the\ud role of hydrophobic and electrostatic forces in the interaction\ud between the pharmaceutical molecule and the adsorbent

Topics: adsorption, zeolites, emerging contaminants,
Publisher: Società Chimica Italiana, Università della Calabria
Year: 2014
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