AN INVESTIGATION INTO TECHNIQUES FOR THE DETERMINATION OF MOISTURE CONTENT ON ACTIVATED CARBON

Authors
  1. Cameron, L.E.
  2. Liang, S.H.C.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The current method employed in the determination of the moisture content of activated carbon is the American Standard Test Method (ASTM) D-2867 (1976), using xylene extraction. However, this test is time-consuming and requires an elaborate experimental set-up. Furthermore, the ASTM has been found to be unsuitable for ASC/T carbon which contains triethylenediamine (TEDA). For this reason, alternatives to the ASTM were considered in this study. The ASTM method has been modified by replacing the extracting solvent xylene with toluene, to reduce the quantity of TEDA being collected with the water. Another alternative is the use of a convection oven where carbon samples were dried under three conditions: 150C for 3 hours, 105C for 3 hours and 105C for 16 hours, and the moisture content results compared. This alternate method proves to be more efficient and the results obtained are comparable to that of the ASTM method.
Report Number
DREO-TN-91-25 — Technical Note
Date of publication
15 Sep 1991
Number of Pages
35
DSTKIM No
92-00846
CANDIS No
103740
Format(s):
Hardcopy;Originator's fiche received by DSIS

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