A detailed sequential extraction study of selenium in coal and coal-associated strata from a coal mine in West Virginia

Roy, M. D.

doi:10.33915/etd.2307

Cited by 3 publications

(8 citation statements)

References 27 publications

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“…6 Block coal bed through the Coalburg coal bed stratigraphic interval. Roy (2005) and Vesper and Roy (2006) did not find any strong correlation between Se and sulfur content or organic matter in rock samples.…”

Section: Comparison Of Se Concentration In Roof Parting Floor and mentioning

confidence: 86%

“…Several recent studies have examined Se concentrations in various lithologies collected from cores drilled in coal-bearing strata in southern West Virginia (Jenkins and Schaer, 2005;Mullennex, 2005;Roy, 2005;Vesper and Roy, 2006). Samples in those studies were collected from different stratigraphic intervals, selected using different criteria, and categorized into different lithologic groups compared to this report.…”

Section: Discussion Selenium Concentration Lithology and Mineralogymentioning

confidence: 99%

“…The SPE results of this study suggest that total Se in rock is not a predictor for soluble Se. Roy (2005) and Vesper and Roy (2006) also noted that soluble Se was not correlated to total Se in rock. SPE or some other leaching procedure, rather than total Se values determined on whole-rock samples, may provide a more accurate indication of the potential for Se mobilization to streams following land disturbance.…”

Section: Mobilization Of Soluble Seleniummentioning

confidence: 96%

“…They found higher concentrations of Se in dark organic-rich rock close to coal beds compared to sandstone farther from coal beds. Roy (2005) and Vesper and Roy (2006) examined one core in the Coalburg through the Winifrede interval in the upper Kanawha Formation. Vesper and Roy (2006) and Mullennex (2005) found a trend of more Se in organic-rich rock ('carbolith' or 'coal and shale') than shale than sandstone.…”

Section: Comparison Of Se Concentration In Roof Parting Floor and mentioning

confidence: 99%

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Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin

Neuzil¹,

Dulong²,

Cecil³

et al. 2007

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Appendix A1. Coal bed stratigraphy in core USGS 9 Appendix A2. Coal bed stratigraphy in core USGS 11 Appendix A3. Coal bed stratigraphy in core USGS 12 Appendix A4. Lithology terminology and abbreviations used by the West Virginia Geological and Economic Survey for core description Appendix A5. Geologists' description of core USGS 9 Appendix A6. Geologists' descriptions of core USGS 11 Appendix A7. Geologists' descriptions of core USGS 12 Appendix A8. Natural gamma ray, density, resistivity and caliper logs for core USGS 9 Appendix A9. Natural gamma ray, density, resistivity and caliper logs for core USGS 11 Appendix A10. Natural gamma ray, density, resistivity and caliper logs for core USGS 12 Appendix B1. Se analyses of USGS 9-LITH samples, 1-foot increment samples selected by lithology from core USGS 9 iii Appendix B2. Se analyses of USGS 9-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 9 Appendix B3. Se analyses of USGS 11-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 11 Appendix B4. Se analyses of USGS 12-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 12 Appendix B5. Major phase mineralogy X-ray diffraction (XRD) and major element oxide X-ray fluorescence (XRF) analyses of USGS 9-LITH samples, 1-foot increment samples selected by lithology from core USGS 9 Appendix B6. Major phase mineralogy X-ray diffraction (XRD) and major element oxide X-ray fluorescence (XRF) analyses of USGS 9-10-ft samples, 1-foot increment samples collected at 10foot intervals from core USGS 9 Appendix B7. Major phase mineralogy X-ray diffraction (XRD) and major element oxide X-ray fluorescence (XRF) analyses of USGS 11-10-ft samples, 1-foot increment samples collected at 10foot intervals from core USGS 11 Appendix B8. Major phase mineralogy X-ray diffraction (XRD) and major element oxide X-ray fluorescence (XRF) analyses of USGS 12-10-ft samples, 1-foot increment samples collected at 10foot intervals from core USGS 12 Appendix B9. Se concentration, thickness, ash, total sulfur, and loss on ignition data for roof, parting, and floor samples from core USGS 9 Appendix B10. Se concentration in saturated paste extract leachate (SPE) and rock from USGS 9-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 9 Appendix B11. Se concentration in saturated paste extract leachates from rock (SPE-A), a second extraction (SPE-B), and Se concentration in rock from USGS 11-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 11 Appendix B12. Se concentration in saturated paste extract leachate (SPE) and rock from USGS 12-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 12 Appendix B13. Se concentration in sequential water extraction leachate (SWE) and rock from USGS 11-10-ft samples, 1-foot increment samples collected at 10-foot intervals from core USGS 11 Appendix B14. Se concentration in replicate analyses of 12 rock samples coinc...

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Section: Comparison Of Se Concentration In Roof Parting Floor and mentioning

confidence: 86%

Section: Discussion Selenium Concentration Lithology and Mineralogymentioning

confidence: 99%

Section: Mobilization Of Soluble Seleniummentioning

confidence: 96%

Section: Comparison Of Se Concentration In Roof Parting Floor and mentioning

confidence: 99%

See 2 more Smart Citations

Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin

Neuzil¹,

Dulong²,

Cecil³

et al. 2007

Open-File Report

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show abstract

“…Due to the lengthy process associated with natural rock dissolution (Sparks, 1989), Roy (2005) and Pumure et al (2009) Se extracted from each sample (sandstone, claystone 1, claystone 2) ranged from 75-99%, 14-35%, and 9.0-14%, respectively. An additional study by Pumure et al (2010) found that 35% and 38% of total Se in shale samples from a southern WV surface mine were extractable by similar ultransonic methods.…”

Section: Desorption Of Seleniummentioning

confidence: 99%

Geomorphic Landform Design as an Alternative for Conventional Valley Fill Surface Mine Reclamation: Assessing Conceptual Design, Groundwater Modeling, and Contaminant Desorption

DePriest¹

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This research aimed to evaluate the potential of applying geomorphic landform design (GLD) principles to valley fill reclamation, specifically in southern West Virginia, central Appalachia, USA. When constructing reclaimed landforms, GLD aims to mimic the geomorphology of reference landforms that are stable and in erosive and hydrologic equilibrium. Challenges with the technique have been identified related to use in central Appalachia. Reference landform design values vary by location and need to be quantified at a local scale for site-specific design. Due to the steep slopes of existing valleys, constructing engineered landforms that naturally blend in with the surrounding environment may not ensure stability. Less steep, more stable slopes of geomorphic landforms could create greater stream disturbance to maintain fill volumes. Potential benefits of GLD with respect to groundwater movement and contaminant desorption have also not been quantified. This research presents three major objectives to assess geomorphic landform design in central Appalachia: 1) define the geomorphic characteristics of mature landform reference sites in southern West Virginia; 2) quantify the issues associated with implementing geomorphic reclamation on a field scale at an existing valley fill; and, 3) compare models of groundwater movement and desorption of selenium in reclamation alternatives for a southern WV surface mine. Geomorphic properties of drainage length and drainage density for mature landforms in central Appalachia were 408 ft and 62 ft/ac, respectively. Slopes were steep (>20%), aspects were well distributed in all directions, vegetation was predominately dense core forest, and ephemeral channel heads developed where erosive surface processes created concentrated flow and sediment transport. Potential issues associated with implementing GLD in central Appalachia with respect to landform stability, stable channel mitigation, and mass balance were confirmed. No geomorphic design was able to satisfy all three criteria when the permitted area of impact was maintained. Expanding the area of impact beyond permit boundaries promoted more success in meeting design criteria, but did not comply with reclamation regulations governing excess spoil placement and constructed hillslopes. A quantitative comparison of the groundwater movement and selenium desorption between alternative reclamation designs confirmed potential benefits to geomorphic reclamation. Selenium desorption was reduced by 23-39% in geomorphic fills and was attributed to improved groundwater movement. Geomorphic reclaimed landforms exhibited 23-45% lower infiltration volumes, 12-63% lower groundwater discharge volumes, and approximately 50% shorter groundwater residence times. These findings will be used to provide recommendations to government agencies and the surface mining industry on the practicality of implementing geomorphic reclamation as an alternative to conventional valley fill reclamation in central Appalachia.

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Selenium in ecosystems within the mountaintop coal mining and valley-fill region of southern West Virginia-assessment and ecosystem-scale modeling

Presser¹

2013

Professional Paper

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A detailed sequential extraction study of selenium in coal and coal-associated strata from a coal mine in West Virginia

Cited by 3 publications

References 27 publications

Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin

Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin

Geomorphic Landform Design as an Alternative for Conventional Valley Fill Surface Mine Reclamation: Assessing Conceptual Design, Groundwater Modeling, and Contaminant Desorption

Selenium in ecosystems within the mountaintop coal mining and valley-fill region of southern West Virginia-assessment and ecosystem-scale modeling

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