Link to USGS home page.
Open-File Report 2005–1177
  About USGS /  Science Topics /  Maps, Products & Publications /  Education / FAQ

Zero-Headspace Coal-Core Gas Desorption Canister, Revised Desorption Data Analysis Spreadsheets and a Dry Canister Heating System

By Charles E. Barker and Todd A. Dallegge

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).

Version 1.0

Posted July 2005

Part or all of this report is presented in Portable Document Format and Excel. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here.

For viewing and printing.
(This version of the report is accessible as defined in Section 508 of the Rehabilitation Act of 1973, Amendments of 1998.) logo  Take Pride in America button