of Flue Gas Desulfurization Residue on Plant Establishment
and Soil and Leachate Quality
Punshon, Domy C. Adriano, and John T. Weber
soil quality and crop establishment after incorporation of flue gas desulfurization by-product (FGD) into soil as an amendment
was assessed in a mesocosm study. Mesocosm units received applications equivalent to 0, 2.5, 5.0, 7.5, and 10% FGD residue
[0, 25, 50, 75, and 100 tons acre-1].
Germination, biomass production,and elemental composition of corn (Zea
mays L. var. Dekalb DK-683), soybean [Glycine max (L.) Merr. var. Haskell
Pupa 94], radish (Raphanus sativus L. var. Sparkler), and cotton (Gossypius hirsutus
L. var. Deltapine 51) were
determined. The quality of
soil were also
determined periodically. Flue gas desulfurization residue did not affect germination and all application rates stimulated
aboveground biomass. Plants grown in FGD-amended soil contained significantly elevated tissue concentrations of As, B, Se, and Mo.
The FGD residue elevated surface soil pH from 5.5 (Control) to 8.1 (at
10% FGD). Leachate pH was unaffected by FGD, but salinity rose sharply with increasing application rates of FGD. Leachates contained higher concentrations of B, with small increases in Se and As. Flue gas desulfurization residue application caused an increase in total
B, As, Mo, Se, and extractable Ca in the soil, but decreased Mn and Zn. Using FGD residues could have beneficial effects on crop establishment
without detrimental effects on soil or leachate quality, at an
optimum rate of approximately 2.5%. This material could alleviate surface
acidity, and B and Mo deficiencies in plants.
T., D. C. Adriano, and J. T. Weber. 2001. Effect of flue gas desulfurization
residue on plant establishment and soil and leachate quality. Journal
of Environmental Quality 30:1071-1080.
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