Influence of irrigation and weathering reactions on the composition of percolates from retorted oil shale in field lysimeters
Major cations, anions, trace elements and dissolved organic C were measured in percolate from retorted oil shale collected from irrigated lysimeters in the field at Anvil Points, Colorado, over a two year period. The investigations indicated that chemical equilibrium was not established over the monitoring period and major changes occurred in percolate composition as a function of applied water volume and water residence time in the shale. Field and laboratory studies indicated that several factors contributed to changes in the chemistry of the shale on weathering, including recarbonization of the surface horizons with atmospheric CO/sub 2/ and the activities of microorganisms in surface and subsurface horizons. However, the principal mechanism responsible for the decreases in pH and salt concentrations appeared to be the conversion of major quantities of sulfide in the retorted shale to sulfate through a thiosulfate intermediate.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 5674139
- Report Number(s):
- PNL-SA-7473; CONF-790440-6
- Resource Relation:
- Conference: 12. oil shale symposium, Golden, CO, USA, 18 Apr 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
SPENT SHALES
CHEMICAL EFFLUENTS
CHEMICAL REACTIONS
WASTE WATER
CHEMICAL COMPOSITION
ANIONS
CARBON DIOXIDE
CATIONS
COLORADO
DATA COMPILATION
GRAPHS
IRRIGATION
METABOLISM
MICROORGANISMS
ORGANIC COMPOUNDS
PH VALUE
RETORTS
SOIL CHEMISTRY
SOILS
SULFATES
TABLES
TIME DEPENDENCE
WEATHERING
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTORS
CHEMISTRY
DATA
DATA FORMS
HYDROGEN COMPOUNDS
INFORMATION
IONS
LIQUID WASTES
NORTH AMERICA
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
ROCKS
ROCKY MOUNTAIN REGION
SEDIMENTARY ROCKS
SHALES
SULFUR COMPOUNDS
USA
WASTES
WATER
041000* - Oil Shales & Tar Sands- Environmental Aspects
510200 - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)