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UTILITY OF ZEOLITES IN HAZARDOUS METAL REMOVAL FROM WATER
Shevade, S. AND R G. Ford*. UTILITY OF ZEOLITES IN HAZARDOUS METAL REMOVAL FROM WATER. Presented at 226th ACS Nat'l. Mtg, New York, NY, September 07 - 11, 2003.
To inform the public.
Zeolites are well known for their ion exchange, adsorption and acid catalysis properties. Different inorganic pollutants have been removed from water at room temperature by using synthetic zeolites. Zeolite Faujasite Y has been used to remove inorganic pollutants including arsenic, cadmium and lead from water in continuous flow reactions below EPA's maximum contamination limits. Simultaneous behavior of zeolite Y as an anion exchanger and cation exchanger has been observed. Mixtures of these zeolites have been tested for complex matrix of the water pollutants. The zeolites showed a very good pollutant removal capacity with contact time less than 1 min. The pollutant removal capacity of the zeolites over a wide pH range may be useful in determining the next generation wastewater treatment. The apparent removal mechanisms for the various contaminants include cation and anion / ligand exchange for various inorganic contaminants.
Record Details:Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
GROUND WATER AND ECOSYSTEMS RESTORATION DIVISION
TECHNICAL AND ADMINISTRATIVE SUPPORT STAFF