Liming efficacy and transport in soil of a dry PFBC by-product

Conference · Fri Dec 01 04:00:00 EST 1995

OSTI ID:135095

Dick, W A

The by-products of pressurized fluidized-bed combustion (PFBC) systems are mixtures of coal ash, anhydrite (CaSO{sub 4}), and unspent alkaline sorbent. Because PFBC by-products are alkaline and contain large concentrations of readily soluble bases (Ca and in some cases Mg) and other essential plant nutrients such as S and K, they have potential use as soil amendments, especially in acidic soils. PFBC by-products (particularly those with large Mg contents) may cause excessively high soluble salt concentrations when applied to soil. This could be detrimental to plant growth and might also impact the release of trace elements from the coal ash component of the by-product. In field experiments on three acidic soils, the liming effectiveness of a PFBC by-product, its effects on corn and alfalfa growth, and its impacts on crop, soil, and water quality were investigated.

• 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: 135095
• Report Number(s): DOE/MC/28060--96/C0542; CONF-9506162--49; ON: DE96002606
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
55 BIOLOGY AND MEDICINE
BASIC STUDIES
ALFALFA
ANHYDRITE
ASHES
BIOLOGICAL EFFECTS
BY-PRODUCTS
COAL
COMBUSTION PRODUCTS
ENVIRONMENTAL EFFECTS
FLUIDIZED-BED COMBUSTION
LIMING
MAIZE
NUTRIENTS
PLANT GROWTH
SOILS
TRANSPORT
WASTE PRODUCT UTILIZATION
WATER QUALITY