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Fly Ash Disposal in Ash Ponds: A Threat to Ground Water Contamination

Fly Ash Disposal in Ash Ponds: A Threat to Ground Water Contamination Ground water contamination due to deposition of fly ash in ash ponds was assessed by simulating the disposal site conditions using batch leaching test with fly ash samples from three thermal power plants. The periodic analysis of leachates was performed for selected elements, Fe, Cu, Ni, Cr, Pb and Cd in three different extraction solutions to determine the maximum amount that can be leached from fly ash. It was observed that at low pH value, maximum metals are released from the surface of the ash into leachate. The average concentration of these elements found in ground water samples from the nearby area of ash ponds shows that almost all the metals except ‘Cr’ are crossing the prescribed limits of drinking water. The concentration of these elements at this level can endanger public health and environment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

Fly Ash Disposal in Ash Ponds: A Threat to Ground Water Contamination

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Publisher
Springer Journals
Copyright
Copyright © 2016 by The Institution of Engineers (India)
Subject
Engineering; Civil Engineering
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-016-0165-z
Publisher site
See Article on Publisher Site

Abstract

Ground water contamination due to deposition of fly ash in ash ponds was assessed by simulating the disposal site conditions using batch leaching test with fly ash samples from three thermal power plants. The periodic analysis of leachates was performed for selected elements, Fe, Cu, Ni, Cr, Pb and Cd in three different extraction solutions to determine the maximum amount that can be leached from fly ash. It was observed that at low pH value, maximum metals are released from the surface of the ash into leachate. The average concentration of these elements found in ground water samples from the nearby area of ash ponds shows that almost all the metals except ‘Cr’ are crossing the prescribed limits of drinking water. The concentration of these elements at this level can endanger public health and environment.

Journal

Journal of The Institution of Engineers (India): Series ASpringer Journals

Published: Jul 22, 2016

References