The Impact of Leachate From Clean Coal Technology Waste on the Stability of Clay and Synthetic Liners

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Description

This project was developed to provide design criteria for landfill disposal sites used for sludges such as those generated using the Clean Coal Technologies (CCT) tested at the Public Service Company of Colorado`s Arapahoe Power Plant. The CCT wastes used were produced at the Arapahoe Plant Unit No. 4 that was equipped with the integrated dry NO{sub x}/S{sub 2} emissions control system installed under the Clean Coal Technology (CCT) Program. The investigation emphasized the potential impact of clean coal technology materials (sodium and calcium injection systems, and urea injection) on the permeability and stability characteristics of clay liner materials and ... continued below

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16 p.

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Brown, T.H. & Ghate, M. December 31, 1996.

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  • Brown, T.H. Western Research Institute, Laramie, WY (United States)
  • Ghate, M. USDOE Morgantown Energy Technology Center, WV (United States)

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Description

This project was developed to provide design criteria for landfill disposal sites used for sludges such as those generated using the Clean Coal Technologies (CCT) tested at the Public Service Company of Colorado`s Arapahoe Power Plant. The CCT wastes used were produced at the Arapahoe Plant Unit No. 4 that was equipped with the integrated dry NO{sub x}/S{sub 2} emissions control system installed under the Clean Coal Technology (CCT) Program. The investigation emphasized the potential impact of clean coal technology materials (sodium and calcium injection systems, and urea injection) on the permeability and stability characteristics of clay liner materials and the stability of synthetic liner materials. Flexible-wall permeameters were used to determine the hydraulic conductivities (HC) of the clay liner materials impacted by various compactive conditions. Tests were conducted using the waste materials overlying the clay liner materials under wet/dry cycles, freeze/thaw cycles, and over 120-day periods. The impact of CCT materials on the characteristics of the clay liner materials studied in this project was minimal The HC measurements of the waste/clay liner systems were similar to the water/clay liner systems. HC decreased for clay liners compacted at moisture levels slightly higher than optimum (standard Procter) and increased for liners compacted at moisture levels lower than optimum (standard Procter). Although some swelling was evident in the sodium materials, the sludge materials did not have a negative impact on the integrity of the liners over 120-day tests. Wet/dry cycles tended to result in lower HC, while freeze/thaw cycles substantially increased HC for the liners tested.

Physical Description

16 p.

Notes

INIS; OSTI as DE97051050

Medium: P; Size: 16 p.

Source

  • Advanced coal-fired power systems review meeting, Morgantown, WV (United States), 16-18 Jul 1996

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  • Other: DE97051050
  • Report No.: DOE/MC/30127--97/C0753
  • Report No.: CONF-960757--43
  • Grant Number: FC21-93MC30127
  • Office of Scientific & Technical Information Report Number: 419456
  • Archival Resource Key: ark:/67531/metadc682395

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 10, 2017, 2:42 p.m.

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Brown, T.H. & Ghate, M. The Impact of Leachate From Clean Coal Technology Waste on the Stability of Clay and Synthetic Liners, article, December 31, 1996; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc682395/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.