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Geochemistry of leachates from selected coal mining and combustion wastes

Technical Report ·
OSTI ID:6786764
;
During the mining of coal, large amounts of inorganic material (gob) are removed with the coal. After cleaning of the coal, this waste is deposited adjacent to the mined area. One of these gob piles, located in Barton County, Missouri, is evaluated as to chemical composition of the waste, leaching characteristics of the waste and mineralogy of secondary minerals deposited at the pile. Two types of coal combustion wastes, fly ash and bottom ash, from five coal producing provinces of the United States are discussed in relation to Ca, Mg, Na, K, Mn, Fe, Cu, Zn and Pb concentrations in the whole sample and in the leachate generated from these ashes. An evaluation of geology, hydrogeology, soil chemistry and groundwater chemistry at an ash disposal site of a coal-fired power plant showed elevated concentrations of Ca, Mg and Na+K in the leachate of the coal ash relative to native groundwater. Only trace amounts of Mn, Fe, Cu, Zn are present in the ash leachate and no degradation of the local groundwater quality is predicted for this site.
Research Organization:
Kansas Water Resources Research Inst., Manhattan (USA)
OSTI ID:
6786764
Report Number(s):
PB-82-243593
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
AEROSOL WASTES
ALKALI METALS
ALKALINE EARTH METALS
ASHES
CALCIUM
CHEMICAL COMPOSITION
COAL MINING
COAL PREPARATION
COMBUSTION PRODUCTS
COMMINUTION
COPPER
DISPERSIONS
DISSOLUTION
ELEMENTS
FEDERAL REGION VII
FLY ASH
FOSSIL-FUEL POWER PLANTS
GROUND WATER
HYDROGEN COMPOUNDS
INDUSTRIAL WASTES
INORGANIC COMPOUNDS
IRON
LEACHATES
LEACHING
LEAD
MAGNESIUM
MANGANESE
METALS
MINING
MISSOURI
MIXTURES
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
POTASSIUM
POWER PLANTS
RESIDUES
SEPARATION PROCESSES
SODIUM
SOLID WASTES
SOLUTIONS
SPOIL BANKS
THERMAL POWER PLANTS
TRANSITION ELEMENTS
USA
WASTES
WATER
WATER POLLUTION
ZINC