Metals in Soil and Runoff from a Piedmont Hay Field Amended with Broiler Litter and Flue Gas Desulfurization Gypsum
| Autor: | Harry H. Schomberg, Michael B. Jenkins, Rufus L. Chaney, Dinku M. Endale, Dorcas H. Franklin |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
Gypsum 010501 environmental sciences Management Monitoring Policy and Law engineering.material Calcium Sulfate 01 natural sciences Soil Animal science Metals Heavy Animals Soil Pollutants Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Broiler 04 agricultural and veterinary sciences Pollution Rainfall simulation Flue-gas desulfurization Manure Metals 040103 agronomy & agriculture Litter engineering Hay 0401 agriculture forestry and fisheries Environmental science Surface runoff Chickens |
| Zdroj: | Journal of Environmental Quality. 47:326-335 |
| ISSN: | 0047-2425 |
| Popis: | Flue gas desulfurization gypsum (FGDG) from coal-fired power plants is readily available for agricultural use in many US regions. Broiler litter (BL) provides plant available N, P, and K but can be a source of unwanted As, Cu, and Zn. As a source of Ca and S, FGDG can reduce losses of P and other elements in runoff from BL-amended areas. Rainfall simulation plots (2.0 m) were established on a Piedmont Cecil soil growing 'Coastal' bermudagrass ( L.) for hay. Accumulation and transport of As, Cu, Cd, Cr, Hg, Pb, and Zn were evaluated after annual BL applications (13.5 Mg ha) with four FGDG rates (0, 2.2, 4.5, 9.0 Mg ha) and two FGDG treatments (0 and 9 Mg ha) without BL. Runoff As concentrations were sixfold greater with BL than without ( ≤ 0.01) and were similar to BL with FGDG at 2.2, 4.5 or 9.0 Mg ha ( ≤ 0.10). Runoff concentrations of target elements did not increase where FGDG was applied alone. After three annual applications of FGDG and BL, soil concentrations of As, Cr, Pb, Hg, and Cu were well below levels of environmental concern. Our findings indicate that runoff losses of As from BL application are not reduced with FGDG but support other research indicating no identifiable environmental risks from FGDG beneficial use in agricultural systems. |
| Databáze: | OpenAIRE |
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