Detoxification and generation of useful products from coal combustion wastes

Technical Report · Wed Nov 21 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6203033· OSTI ID:6203033

Electric utilities are on the brink of a new era in waste disposal problems. This research project addresses the issue of how to effectively dispose of flyash, bottom ash, desulfurization sludge through the generation of chemically-hardened material that could potentially be used as a cement or as a synthetic aggregate. The specific goals of this study were: (1) to study the hardness of mixtures of flyash, bottom ash, and DSG treated with lime and other hardening agents; (2) to determine the optimum solids content, setting time, moisture content, and post setting treatments that will yield the greatest strength and hardness out of these mixtures; and (3) to determine the leachability of the synthetic material as a measure of its ability to retain absorbed and/or entrained toxic metals. 50 refs., 15 figs., 8 tabs.

• Research Organization: Arkansas Tech Univ., Russellville, AR (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: FG22-88PC88910
• OSTI ID: 6203033
• Report Number(s): DOE/PC/88910-8; ON: DE91006728
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
ASHES
WASTE PRODUCT UTILIZATION
COAL
COMBUSTION PRODUCTS
FLY ASH
FOSSIL-FUEL POWER PLANTS
WASTE MANAGEMENT
METALS
ADSORPTION
SLUDGES
CEMENTS
CHEMICAL COMPOSITION
DESULFURIZATION
HARDNESS
LEACHING
MIXTURES
PROGRESS REPORT
WASTES
AEROSOL WASTES
BUILDING MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DISPERSIONS
DISSOLUTION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MANAGEMENT
MATERIALS
MECHANICAL PROPERTIES
POWER PLANTS
RESIDUES
SEPARATION PROCESSES
SORPTION
THERMAL POWER PLANTS
010800* - Coal
Lignite
& Peat- Waste Management
200200 - Fossil-Fueled Power Plants- Waste Management
360603 - Materials- Properties