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Evaluation of rundle spent shale as an adsorbent for the treatment of retort water

Conference · · Oil Shale Symp. Proc.; (United States)
OSTI ID:6074952
Adsorption and desorption tests were performed on a number of raw and spent shale samples to determine the ability of these solids to adsorb the organic components from retort waters. All solid samples were extracted from the Rundle deposit, Queensland, the most advanced of Australia's oil shale developments. Spent shales produced in the laboratory and in trial runs of two pilot retorts were utilised. The retort waters were generated by Fischer Assay techniques and from a pilot retort trial. Preliminary results show that a significant amount of organic carbon is adsorbed onto Rundle shales. The adsorptive capacity was found to be significantly greater than that reported for Colorado shales, this being attributed to the larger internal surface area of the Rundle shales. The major non-adsorbable components in the retort water have been identified (by GC/MS) as being normal carboxylic acids. Also, it has been demonstrated that the adsorbed organic material is not easily desorbed and that the spent shale has a high capacity for retaining water. The results of this work indicate that: co-disposal of retort water with spent shale is a feasible proposition there is potential for using spent shale as an organic adsorbent in a water treatment scheme.
Research Organization:
Department of Chemical Engineering, University of Queensland
OSTI ID:
6074952
Report Number(s):
CONF-8404121-
Conference Information:
Journal Name: Oil Shale Symp. Proc.; (United States)
Country of Publication:
United States
Language:
English