"Carbon dioxide (CO₂) from acid mine drainage (AMD)-carbonate neutralization reactions in reclaimed mine spoils, can intermittently invade homes and structures constructed on or adjacent to these spoils in hazardous and even lethal concentrations (>15%) and rendering them uninhabitable. This phenomenon is beginning to be recognized as an emerging environmental, safety and health threat with potential environmental and financial liability for mine operators, developers and owners.
Like in natural soils, soil temperature and moisture, and possibly elevation are likely to influence CO₂ emissions from reclaimed mine spoils. However, mine spoil soils are heterogeneous and have significant convective transport due to exothermic AMD reactions. Therefore, assumptions made for natural soils may not hold.
The aim of this study was to foster further understanding of the processes controlling the efflux of CO₂ from reclaimed mine spoils and evaluate the effectiveness of accumulation chamber (AC) flux measurement in identifying and delineating this hazard. AC measurements, isotope ratio mass spectroscopy, and statistical techniques were applied to three reclaimed mine sites in the United States of America. Among the study findings are that: (i) there is correlation between CO₂ flux and elevation, soil temperature and moisture; (ii) CO₂ fluxes are not always random but spatially autocorrelated; (iii) AMD-derived CO₂ emissions are normally too low to successfully be used to delineate hazards. This pioneering effort also makes recommendations for future work that could make AC flux measurement more effective for this emerging hazard"--Abstract, page iii.
Awuah-Offei, Kwame, 1975-
Ge, Mao Chen
Cawlfield, Jeffrey D.
Ph. D. in Mining Engineering
National Science Foundation (U.S.)
University of Botswana
Missouri University of Science and Technology
xxi, 210 pages
© 2013 Moagabo Justice Kedikilwe Mathiba, All rights reserved.
Dissertation - Restricted Access
Mine soils -- Environmental aspects
Carbon dioxide mitigation
Abandoned mined lands reclamation -- Pennsylvania
Abandoned mined lands reclamation -- Indiana
Abandoned mined lands reclamation -- Missouri
Acid mine drainage -- Environmental aspects
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu:80/record=b10115746~S5
Mathiba, Moagabo, "Spatial variation of AMD related CO₂ emissions on reclaimed mine spoil" (2013). Doctoral Dissertations. 77.
Hudson Site Raw Data and Barometric Pressure-CO<sub>2</sub> Flux-time Graphs
APENDIX B.docx (53 kB)
Godin Site Raw Data and Barometric Presure-Co<sub>2</sub> Flux-time Graphs
APPENDIX C.docx (60 kB)
Germantown Site Raw Data and Barometricpresure-Co<sub>2</sub> Flux-time Graphs
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