Studies on the Regeneration of Activated Carbon for Removal of alpha-TNT from Waste Waters.
Technical rept. Sep 72-Dec 73,
EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD
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Repetitive solvent regeneration of Filtrasorb 400 for absorption of alpha-TNT from aqueous solutions has been studied using column breakthrough analysis. There is a 24 drop in efficiency of carbon adsorption with the first regeneration followed by successively slower losses in efficiency with further regenerations. Significant regeneration is achieved, and arguments are developed for application of the data to long-column design. This development is significant, for it allows application of data from convenient short-column systems 10 to 15 cm to be applied to long-column 400 cm, etc., 25 critical bed depths systems which cannot be practically studied in the laboratory. Adsorption capacity of thermally regenerated incineration carbon was very low. Preliminary studies suggest that hot acetone extraction may improve regeneration efficiencies over the ambient elution methods used in the column work. Author
- Physical Chemistry
- Ammunition and Explosives