~ Pergamon
Org. Geochem. Vol. 24, No. 2, pp. 21%226, 1996
Copyopyright © 1996 Published by Elsevier Science Ltd
Printed in Great Britain. All rights reserved PII: S0146-6380(96)00019-8 0146-6380/96 $15.00 + 0.00
Petrography of pyrolysis and pyrolysis-steam retorted residues from
the alpha torbanite and the alpha cannel coal
ADRIAN C. HUTTON I, USCHI M. GRAHAM 2, JAMES C. HOWER 2,
ROBERT F. RATHBONE 2 and THOMAS L. ROBL 2
~Department of Geology, University of Wollongong, Wollongong, NSW 2522, Australia and
-'Center for Applied Energy Research, University of Kentucky, Lexington, KY 40511, U.S.A.
Abstract--Pyrolysis retorting of the Permian Alpha torbanite and associated cannel coals from the Alpha
deposit in Queensland, Australia, are discussed. Pyrolysis induced porosity was studied both on samples
treated in a pyrolysis reactor and heating microscope. Retorted samples were further processed in a
steam-saturated retort at 880°C for 4 h which induced abundant micro-porosity in the torbanite and cannel
coal. Adsorbent carbon appears to be a value-added product for the steam-treated torbanite and coal.
The studies of the steam-processed materials from the Alpha torbanite and associated cannel coal reported
in this paper indicate that this material may have great potential as a source of adsorbent carbon to be
utilized to abate environmental pollution. Copyright © 1996 Published by Elsevier Science Ltd
Key words--torbanite, cannel coal, retorting, active carbons, petrography
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