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Main Title Effect of GAC Characteristics on Adsorption of Organic Pollutants.
Author Sorial, G. A. ; Suidan, M. T. ; Vidic, R. D. ; Brenner, R. C. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Cincinnati Univ., OH. Dept. of Civil and Environmental Engineering. ;Pittsburgh Univ., PA.
Publisher Feb 93
Year Published 1993
Report Number EPA/600/J-93/446;
Stock Number PB94-113768
Additional Subjects Granular activated carbon treatment ; Water pollution control ; Adsorption ; Phenols ; Polymerization ; Oxygenation ; Isotherms ; Performance evaluation ; Surface chemistry ; Bituminous coal ; Lignite ; Wood ; Reprints ; Phenol/chloro
Library Call Number Additional Info Location Last
NTIS  PB94-113768 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Adsorption on granular activated carbon (GAC) is gaining prominence as a method for removing organic pollutants from water. The impact of the characteristics of GAC on adsorption capacity and on the potential for polymerization of phenolic compounds on the surface of GAC in the presence of molecular oxygen is evaluated in this study. Adsorption isotherm data were collected for p-chlorophenol on five activated carbons; three manufactured from bituminous coal, one manufactured from lignite coal, and one manufactured from wood. These isotherms were collected under anoxic (absence of molecular oxygen) and oxic (presence of molecular oxygen) conditions. Higher extraction efficiencies of the carbons used in the oxic isotherms were obtained for the carbons that exhibited lower increases in capacities when compared to anoxic isotherms. Furthermore, no impact of the presence of oxygen on adsorption capacity was noted for the wood base carbon. Breakthrough curves developed for p-chlorophenol on the five carbons studied have shown tailing effects for the carbons that demonstrated differences in capacities under oxic and anoxic conditions whereas no tailing was noticed for the wood base carbon.