Comparison of lime and fly ash as amendments to acidic coal mine refusej growth responses and trace-element uptake of two grasses
Two commonly used revegetation species, Kentucky 31 tall fescue (Festuca arundinacea Schreb.) and Lincoln smooth brome (Bromus inermis Leyss.) were grown for 60 days in pots containing coarse coal mine refuse (referred to as gob, pH = 3.5) that was amended with lime or alkaline fly ash. Both species were also grown in pots containing a silt-loam surface soil as a control. Morphological growth parameters were measured over time; dry weights and shoot:root ratios were determined at harvest. Concentrations of Al, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, V, and Zn in the plant shoots were determined by atomic absorption spectrophotometry. Plant growth of both species was not as good on either lime- or fly ash-amended gob as it was on surface soil. Although plant height and length of the longest lead were not significantly different (p > 0.10) at the end of the experiment for plants grown on the two amended-gob substrates, parameters giving an indication of plant vigor (i.e., number of leaves and stems, width of the longest lead, and biomass) were significantly greater (p < 0.01) for plants grown on lime-amended gob than for those grown on fly ash-amended gob. Significant (p < 0.05) differences in the tissue concentrations of Cd, Co, Fe, Hg, Mn, Pb, V, and Zn were found among the plants grown on the three substrates. Except for Hg and Pb, these elements were higher in plants grown on at least one of the amended-gob substrates than in plants grown on surface soil. Significant substrate differences were not observed for Al, As, Cr, Cu, Ni, and Se. The tissue concentrations of some elements - notably Al, Cu, Fe, Mn, V, and Zn - were high enough in plants from one or more of the substrates to either approach or exceed concentrations that have been reported to be associated with toxic effects in some plant species.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5531476
- Report Number(s):
- ANL/LRP-6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
ABSORPTION SPECTROSCOPY
ARSENIC
CADMIUM
CALCIUM OXIDES
REVEGETATION
CHROMIUM
COBALT
COPPER
FLY ASH
GRASS
PLANT GROWTH
IRON
LAND RECLAMATION
LEAD
MANGANESE
MERCURY
NICKEL
SELENIUM
VANADIUM
ZINC
ADDITIVES
COAL MINES
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
GRAPHS
PH VALUE
QUANTITATIVE CHEMICAL ANALYSIS
RESIDUES
SOILS
TABLES
WEIGHT
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
DATA FORMS
ELEMENTS
GROWTH
INFORMATION
METALS
MINES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLANTS
SEMIMETALS
SPECTROSCOPY
TRANSITION ELEMENTS
WASTES
010900* - Coal
Lignite
& Peat- Environmental Aspects
510500 - Environment
Terrestrial- Site Resource & Use Studies- (-1989)
400104 - Spectral Procedures- (-1987)