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RECORD NUMBER: 5 OF 141

OLS Field Name OLS Field Data
Main Title Effect of Molecular Oxygen on the Scaleup of GAC Adsorbers.
Author Vidiv, R. D. ; Sorial, G. A. ; Papadimas, S. P. ; Suidan, M. T. ; Speth, T. F. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/342;
Stock Number PB93-106896
Additional Subjects Adsorbents ; Activated carbon process ; Water purification ; Pilot plants ; Comparison ; Performance evaluation ; Simulation ; Particle size ; Anoxic ; Organic matter ; Oxygen ; Volatile organic compounds ; Tests ; Reprints ; Trichloroethene
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB93-106896 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1993
Collation 12p
Abstract
A rapid small-scale column test (RSSCT), designed according to the assumption of no dependency of the intraparticle surface diffusion coefficient on the activated carbon particle size, was able to accurately predict breakthrough of three volatile organic chemicals as well as background organic matter under both oxic and anoxic conditions. A second RSSCT, however,--designed assuming a linear dependency of the intraparticle surface diffusion coefficient on the activated carbon particle size--significantly overestimated the adsorptive capacity attainable from the large-column tests. The presence of molecular oxygen in the test environment increased the adsorptive capacity of activated carbon for background organic matter, yielding a delay in its breakthrough from an adsorber. Because of the increased capacity for background organic matter, the resultant capacity for volatile organic chemicals decreased because of competitive effects.