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RECORD NUMBER: 28 OF 689

OLS Field Name OLS Field Data
Main Title Application of Isotherms for Predictions of GAC Performance: A Preliminary Analysis.
Author Snoeyink, V. L. ; Qi, S. ; Halloran, A. ; Koffskey, W. ; Lykins, B. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Civil Engineering. ;Jefferson Parish Dept. of Public Utilities, LA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher 1992
Year Published 1992
Report Number EPA-R-814043; EPA/600/A-92/261;
Stock Number PB93-131555
Additional Subjects Water pollution control ; Isotherms ; Organic compounds ; Performance evaluation ; Adsorption ; Cost analysis ; Organic matter ; Water treatment plants ; Alternatives ; Kinetics ; Mathematical models ; Potable water ; Life(Durability) ; Reprints ; High pressure minicolumns ; Jefferson Parish(Louisiana) ; Granular activated carbon treatment
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NTIS  PB93-131555 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/12/1993
Collation 28p
Abstract
An adsorption isotherm can be generally defined as an expression of the equilibrium, at constant temperature, relating the concentration of a species on an adsorbent surface to the concentration in the solution. It has been extensively used for decades to describe adsorption behavior and to estimate the adsorption capacity of activated carbon in various types of processes for removing organics from water. The unique advantages of the technique include ease of preparation and economy of money and time. The possible applications of isotherms may be summarized as (1) to select the best carbon among the alternatives; (2) to estimate the life of carbon in an adsorber; and (3) to test the remaining adsorption capacity of a working activated carbon adsorber. Isotherm capacities can be used directly or by incorporating them into a kinetic model to predict adsorber performance. The paper will focus on the measurement of capacity and its relationship to the measured life of a (GAC) adsorber.