Developing technologies for high-volume land application uses of pressurized fluidized-bed combustion (PFBC) ash

Technical Report · Sat Apr 01 00:00:00 EST 1995

OSTI ID:52735

Beeghly, J H ^[1]; Dick, W A ^[2]; Wolfe, W ^[3]

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1. Dravo Lime Research Center, Pittsburgh, PA (United States)
2. Ohio State Univ., Wooster, OH (United States). Dept. of Natural Resources
3. Ohio State Univ., Columbus, OH (United States). Dept. of Civil Engineering

Dry alkaline flue gas desulfurization (FGD) by-products, including Tidd PFBC bed and cyclone ash are being evaluated for beneficial uses via land application for agriculture, mine spoil reclamation, soil stabilization, and road embankment construction in a 5 year, $4.4 million research program based in Ohio. The beneficial use for agriculture and mine reclamation as a soil amendment material is primarily due to its high acid neutralizing capacity and gypsum content. Concentrations of leachate RCRA heavy metals approached primary drinking water quality standards and are well within the criteria for classification as non-toxic fly ash according to Ohio EPA policy. Characterization tests of compressive strength, permeability, and compressibility indicate the by-products are practical materials for use in high volume engineered fills or embankments, base courses, and for soil reinforcement. Large field demonstrations of technical, economic, and environmental feasibility have been completed using Tidd PFBC ash (1) to reclaim abandoned coal mineland spoil, (2) as an agricultural lime substitute, (3) in stabilized base construction for a cattle feedlot, and (4) for reconstruction of two state highway embankments. An important factor to understand the behavior of this Tidd PFBC residue is that dolomite was the sorbent.

• Research Organization: Dravo Lime Co., Pittsburgh, PA (United States). Research Center
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC21-91MC28060
• OSTI ID: 52735
• Report Number(s): DOE/MC/28060-95/C0450; CONF-950522-4; ON: DE95009843; TRN: AHC29515%%6
• Resource Relation: Conference: 13. international conference on fluidized-bed combustion, Orlando, FL (United States), 7-10 May 1995; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
ASHES
WASTE PRODUCT UTILIZATION
GROUND DISPOSAL
RESIDUES
FLUIDIZED-BED COMBUSTORS
PRESSURIZATION
ENVIRONMENTAL MATERIALS
MECHANICAL PROPERTIES
SPOIL BANKS
LAND RECLAMATION
LIMING
FOUNDATIONS
EMBANKMENTS
FIELD TESTS
WATER QUALITY
PLANT GROWTH
GREENHOUSES
PERFORMANCE TESTING
CHEMICAL COMPOSITION
PARTICLE SIZE
LEACHING
EXPERIMENTAL DATA