Coal desorption techniques typically use the U.S. Bureau of Mines
(USBM) canister-desorption method as described by Diamond and Levine (1981),
Close and Erwin (1989), Ryan and Dawson (1993), McLennan and others (1994),
Mavor and Nelson (1997) and Diamond and Schatzel (1998). However, the coal
desorption canister designs historically used with this method have an inherent
flaw that allows a significant gas-filled headspace bubble to remain in the canister
that later has to be compensated for by correcting the measured desorbed gas volume
with a mathematical headspace volume correction (McLennan and others, 1994; Mavor and Nelson, 1997).
|Posted July 2005
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