Mark A Engle (Former Employee)
Science and Products
Filter Total Items: 64
Tracking solutes and water from subsurface drip irrigation application of coalbed methane-produced waters, Powder River Basin, Wyoming Tracking solutes and water from subsurface drip irrigation application of coalbed methane-produced waters, Powder River Basin, Wyoming
One method to beneficially use water produced from coalbed methane (CBM) extraction is subsurface drip irrigation (SDI) of croplands. In SDI systems, treated CBM water (injectate) is supplied to the soil at depth, with the purpose of preventing the buildup of detrimental salts near the surface. The technology is expanding within the Powder River Basin, but little research has been...
Authors
Mark A. Engle, Carleton R. Bern, Richard W. Healy, J.I. Sams, J.W. Zupancic, K.T. Schroeder
Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods
Coal fires occur in all coal-bearing regions of the world and number, conservatively, in the thousands. These fires emit a variety of compounds including greenhouse gases. However, the magnitude of the contribution of combustion gases from coal fires to the environment is highly uncertain, because adequate data and methods for assessing emissions are lacking. This study demonstrates the...
Authors
Mark A. Engle, Lawrence F. Radke, Edward L. Heffern, Jennifer M.K. O’Keefe, Charles Smeltzer, James C. Hower, Judith M. Hower, Anupma Prakash, Allan Kolker, Robert J. Eatwell, Arnout ter Schure, Gerald Queen, Kerry L. Aggen, Glenn B. Stracher, Kevin R. Henke, Ricardo A. Olea, Yomayara Roman-Colon
Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America
This study presents >5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico. The purpose of this research was to identify local and regional processes that impact Hg speciation and deposition (wet + dry) across a large swath of North America. Sites...
Authors
Mark A. Engle, Michael T. Tate, David P. Krabbenhoft, James J Schauer, Allan Kolker, James B. Shanley, Michael Bothner
Health effects of energy resources Health effects of energy resources
Energy resources (coal, oil, and natural gas) are among the cornerstones of modern industrial society. The exploitation of these resources, however, is not without costs. Energy materials may contain harmful chemical substances that, if mobilized into air, water, or soil, can adversely impact human health and environmental quality. In order to address the issue of human exposure to toxic
Authors
William Orem, Calin Tatu, Nikola Pavlovic, Joseph Bunnell, Allan Kolker, Mark Engle, Ben Stout
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
Simultaneous real-time changes in mercury (Hg) speciation-reactive gaseous Hg (RGM), elemental Hg (Hg??), and fine particulate Hg (Hg-PM2.5), were determined from June to November 2007, in ambient air at three locations in rural Central Wisconsin. Known Hg emission sources within the airshed of the monitoring sites include: 1) a 1114 megawatt (MW) coal-fired electric utility generating...
Authors
A. Kolker, M.L. Olson, David P. Krabbenhoft, Michael T. Tate, Mark A. Engle
CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA
Carbon dioxide (CO2), carbon monoxide (CO), and mercury (Hg) emissions were quantified for two eastern Kentucky coal-seam fires, the Truman Shepherd fire in Floyd County and the Ruth Mullins fire in Perry County. This study is one of the first to estimate gas emissions from coal fires using field measurements at gas vents. The Truman Shepherd fire emissions are nearly 1400 t CO2/yr and...
Authors
Jennifer M.K. O’Keefe, Kevin R. Henke, James C. Hower, Mark A. Engle, Glenn B. Stracher, J.D. Stucker, Jordan W. Drew, Wayne D. Staggs, Tiffany M. Murray, Maxwell L. Hammond, Kenneth D. Adkins, Bailey J. Mullins, Edward W. Lemley
Science and Products
Filter Total Items: 64
Tracking solutes and water from subsurface drip irrigation application of coalbed methane-produced waters, Powder River Basin, Wyoming Tracking solutes and water from subsurface drip irrigation application of coalbed methane-produced waters, Powder River Basin, Wyoming
One method to beneficially use water produced from coalbed methane (CBM) extraction is subsurface drip irrigation (SDI) of croplands. In SDI systems, treated CBM water (injectate) is supplied to the soil at depth, with the purpose of preventing the buildup of detrimental salts near the surface. The technology is expanding within the Powder River Basin, but little research has been...
Authors
Mark A. Engle, Carleton R. Bern, Richard W. Healy, J.I. Sams, J.W. Zupancic, K.T. Schroeder
Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods
Coal fires occur in all coal-bearing regions of the world and number, conservatively, in the thousands. These fires emit a variety of compounds including greenhouse gases. However, the magnitude of the contribution of combustion gases from coal fires to the environment is highly uncertain, because adequate data and methods for assessing emissions are lacking. This study demonstrates the...
Authors
Mark A. Engle, Lawrence F. Radke, Edward L. Heffern, Jennifer M.K. O’Keefe, Charles Smeltzer, James C. Hower, Judith M. Hower, Anupma Prakash, Allan Kolker, Robert J. Eatwell, Arnout ter Schure, Gerald Queen, Kerry L. Aggen, Glenn B. Stracher, Kevin R. Henke, Ricardo A. Olea, Yomayara Roman-Colon
Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America
This study presents >5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico. The purpose of this research was to identify local and regional processes that impact Hg speciation and deposition (wet + dry) across a large swath of North America. Sites...
Authors
Mark A. Engle, Michael T. Tate, David P. Krabbenhoft, James J Schauer, Allan Kolker, James B. Shanley, Michael Bothner
Health effects of energy resources Health effects of energy resources
Energy resources (coal, oil, and natural gas) are among the cornerstones of modern industrial society. The exploitation of these resources, however, is not without costs. Energy materials may contain harmful chemical substances that, if mobilized into air, water, or soil, can adversely impact human health and environmental quality. In order to address the issue of human exposure to toxic
Authors
William Orem, Calin Tatu, Nikola Pavlovic, Joseph Bunnell, Allan Kolker, Mark Engle, Ben Stout
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
Simultaneous real-time changes in mercury (Hg) speciation-reactive gaseous Hg (RGM), elemental Hg (Hg??), and fine particulate Hg (Hg-PM2.5), were determined from June to November 2007, in ambient air at three locations in rural Central Wisconsin. Known Hg emission sources within the airshed of the monitoring sites include: 1) a 1114 megawatt (MW) coal-fired electric utility generating...
Authors
A. Kolker, M.L. Olson, David P. Krabbenhoft, Michael T. Tate, Mark A. Engle
CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA
Carbon dioxide (CO2), carbon monoxide (CO), and mercury (Hg) emissions were quantified for two eastern Kentucky coal-seam fires, the Truman Shepherd fire in Floyd County and the Ruth Mullins fire in Perry County. This study is one of the first to estimate gas emissions from coal fires using field measurements at gas vents. The Truman Shepherd fire emissions are nearly 1400 t CO2/yr and...
Authors
Jennifer M.K. O’Keefe, Kevin R. Henke, James C. Hower, Mark A. Engle, Glenn B. Stracher, J.D. Stucker, Jordan W. Drew, Wayne D. Staggs, Tiffany M. Murray, Maxwell L. Hammond, Kenneth D. Adkins, Bailey J. Mullins, Edward W. Lemley