Surface coal mine land reclamation using a dry flue gas desulfurization product

Short-term and long-term water responses

Liming Chen, Richard Charles Stehouwer, Xiaogang Tong, Dave Kost, Jerry M. Bigham, Warren A. Dick

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Abandoned coal-mined lands are a worldwide concern due to their potential negative environmental impacts, including erosion and development of acid mine drainage. A field study investigated the use of a dry flue gas desulfurization product for reclamation of abandoned coal mined land in USA. Treatments included flue gas desulfurization product at a rate of 280Mgha-1 (FGD), FGD at the same rate plus 112Mgha-1 yard waste compost (FGD/C), and conventional reclamation that included 20cm of re-soil material plus 157Mgha-1 of agricultural limestone (SOIL). A grass-legume sward was planted after treatment applications. Chemical properties of surface runoff and tile water (collected from a depth of 1.2m below the ground surface) were measured over both short-term (1-4yr) and long-term (14-20yr) periods following reclamation. The pH of surface runoff water was increased from approximately 3, and then sustained at 7 or higher by all treatments for up to 20yr, and the pH of tile flow water was also increased and sustained above 5 for 20yr. Compared with SOIL, concentrations of Ca, S and B in surface runoff and tile flow water were generally increased by the treatments with FGD product in both short- and long-term measurements and concentrations of the trace elements were generally not statistically increased in surface runoff and tile flow water over the 20-yr period. However, concentrations of As, Ba, Cr and Hg were occasionally elevated. These results suggest the use of FGD product for remediating acidic surface coal mined sites can provide effective, long-term reclamation.

Original languageEnglish (US)
Pages (from-to)459-465
Number of pages7
JournalChemosphere
Volume134
DOIs
StatePublished - Sep 1 2015

Fingerprint

Land reclamation
Coal
land reclamation
Desulfurization
Coal mines
Flue gases
coal mine
Gases
Reclamation
runoff
Tile
Runoff
water flow
Water
coal
Soil
water
sward
acid mine drainage
Surface Properties

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemistry(all)

Cite this

Chen, Liming ; Stehouwer, Richard Charles ; Tong, Xiaogang ; Kost, Dave ; Bigham, Jerry M. ; Dick, Warren A. / Surface coal mine land reclamation using a dry flue gas desulfurization product : Short-term and long-term water responses. In: Chemosphere. 2015 ; Vol. 134. pp. 459-465.
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Surface coal mine land reclamation using a dry flue gas desulfurization product : Short-term and long-term water responses. / Chen, Liming; Stehouwer, Richard Charles; Tong, Xiaogang; Kost, Dave; Bigham, Jerry M.; Dick, Warren A.

In: Chemosphere, Vol. 134, 01.09.2015, p. 459-465.

Research output: Contribution to journalArticle

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AU - Chen, Liming

AU - Stehouwer, Richard Charles

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