Beneficial Reuse of FGD Material in the Construction of Low Permeability Liners: Impacts on Inorganic Water Quality Constituents
Publication: Journal of Environmental Engineering
Volume 133, Issue 5
Abstract
In this paper, we examine the water quality impacts associated with the reuse of fixated flue gas desulfurization (FGD) material as a low permeability liner for agricultural applications. A -thick layer of fixated FGD material from a coal-fired power plant was utilized to create a swine manure pond at the Ohio Agricultural Research and Development Center Western Branch in South Charleston, Ohio. To assess the effects of the fixated FGD material liner, water quality samples were collected over a period of from the pond surface water and a sump collection system beneath the liner. Water samples collected from the sump and pond surface water met all Ohio nontoxic criteria, and in fact, generally met all national primary and secondary drinking water standards. Furthermore it was found that hazardous constituents (i.e., As, B, Cr, Cu, and Zn) and agricultural pollutants (i.e., phosphate and ammonia) were effectively retained by the FGD liner system. The retention of As, B, Cr, Cu, Zn, and ammonia was likely due to sorption to mineral components of the FGD liner, while Ca, Fe, and P retention were a result of both sorption and precipitation of Fe- and Ca-containing phosphate solids.
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Acknowledgments
This project was funded by the Ohio Coal Development Office (OCDO), under OCDO Grant Nos. UNSPECIFIEDD-95-19 and UNSPECIFIEDD-98-19. Additional support was provided by the Ohio State University. The writers also thank Mr. Craig Fortner who participated in Phase I of the project and Mr. Bob Brown at OCDO for helpful suggestions related to the work. American Electric Power contributed the fixated FGD and delivered it to the OARDC Western Branch facility.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 133 • Issue 5 • May 2007
Pages: 523 - 531
Copyright
© 2007 ASCE.
History
Received: Apr 27, 2006
Accepted: Aug 15, 2006
Published online: May 1, 2007
Published in print: May 2007
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