Effects of complexometric compounds found in liquid and solid oil shale waste products on release of chemical elements from retorted shale

Technical Report · Wed May 01 04:00:00 EDT 1985

OSTI ID:5635920

Esmaili, E; Carroll, R B; Jackson, L P

Complexometric compounds found in oil shale wastes may have the ability to increase the release of trace elements from retorted oil shale when the solid and liquid wastes are codisposed. A laboratory investigation was conducted on the effects of various complexing agents found in liquid and solid oil shale wastes on the leachability of retorted shales. In batch experiments retorted shale samples were contacted with deionized-distilled water (DDW) and 10 different aqueous solutions of complexing agents. These agents included sodium-oxalate, ammonium-carbonate, sodium-thiosulfate, 2-pyridone, 2-hydroxy-6-methylpyridine, potassium-thiocyanate, acetonitrile, sodium-acetate, acetamide, and nicotinic acid. DDW leachate results were used as a baseline to compare with the results for aqueous complexometric leachates. Some of these agents aided in higher release of arsenic, boron, selenium, lead, and vanadium from the solids. The same complexing agents had different effects on different retorted shales, indicating that the results for one retorted shale may or may not be representative of other retorted shales. This is due to differences in mineralogical residence of elements in various retorted shales and differences in leachate chemical systems of various retorted shales. Concentration of cadium and cobalt did not exceed the quantitation limits of these elements in any of the leachates in this study. 10 refs., 15 tabs.

• Research Organization: Western Research Inst., Laramie, WY (USA)
• DOE Contract Number: FC21-83FE60177
• OSTI ID: 5635920
• Report Number(s): DOE/FE/60177-1884; ON: DE85011993
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040800* -- Oil Shales & Tar Sands-- Economics
Industrial
& Business Aspects
040900 -- Oil Shales & Tar Sands-- Waste management
ARSENIC
BORON
CADMIUM
CHEMICAL BONDS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COBALT
COMPLEXES
DISPERSIONS
DISSOLUTION
ELEMENTS
HYDROGEN COMPOUNDS
LEACHATES
LEACHING
LEAD
LIQUID WASTES
METALS
MIXTURES
OXYGEN COMPOUNDS
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SOLUTIONS
SPENT SHALES
TRANSITION ELEMENTS
VANADIUM
WASTE WATER
WASTES
WATER