Accession Number : AD0779990

Title :   Studies on the Regeneration of Activated Carbon for Removal of alpha-TNT from Waste Waters.

Descriptive Note : Technical rept. Sep 72-Dec 73,

Corporate Author : EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD

Personal Author(s) : Demek,Mary M. ; Davis,George T. ; Richmond,James A. ; Sommer,Harold Z. ; Rosenblatt,David H.

Report Date : MAY 1974

Pagination or Media Count : 23

Abstract : 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)

Descriptors :   *ACTIVATED CARBON, *TNT, *REGENERATION(ENGINEERING), ADSORPTION, EXTRACTION, CHEMICAL ANALYSIS

Subject Categories : Physical Chemistry
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE