✍ Scribed by McTernan, W. F. ;Blanton, W. E. ;Boardman, G. D. ;Nolan, B. T. ;Kocornik, D. J.
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of Energy's in situ tar sand extraction experiment near Vernal, Utah were treated by polymer assisted induced airjotation and activated carbon adsorption. Thejotation process removed over 99 percent of the organic load as emulsified bitumen but did little to reduce residual toxicity in the effluents. Activated carbon adsorption was needed to remove the toxic materials from the waste stream. estimated 2000 compounds in the untreated process water. Internal and recovery standards present at 10 ppm were totally obscured in the chromatogram. Flotation efluents contained 39 identijied organic compounds; none of which was listed on EPA's hazardous chemicals list. Internal and recovery standards were immediately visible in the chromatogram. The GCIMS analysis was unable to determine the chemical basis for the toxic properties present. GCIMS analysis, using a modification of the EPA Method 625, yielded an
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