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Published online 7 November 2005
Published in J Environ Qual 34:2217-2227 (2005)
DOI: 10.2134/jeq2005.0019
© 2005 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Right arrow Vadose Zone Processes and Chemical Transport
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Soil Chemical Changes Resulting from Irrigation with Water Co-Produced with Coalbed Natural Gas

Girisha K. Ganjegunte, George F. Vance* and Lyle A. King

Department of Renewable Resources, 1000 East University Avenue, University of Wyoming, Laramie, WY 82071-3354



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  		Fig. 1. Extensive coal reserves in the Powder River Basin (PRB) cover parts of Wyoming and Montana. The PRB region in Wyoming is currently the most active coalbed natural gas (CBNG)-producing area in the United States.

 


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  		Fig. 2. Mean soil solution pH values of samples from control and irrigated sites. Significant differences between irrigated and control samples at the 0.05 probability level are noted with asterisks.

 


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  		Fig. 3. Mean electrical conductivity of soil saturated paste extracts (ECe) values of soil samples from irrigated and control sites. Significant differences between irrigated and control samples at the 0.05 probability level are noted with asterisks.

 


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  		Fig. 4. Mean sodium adsorption ratio of soil saturated paste extracts (SARe) values of irrigated and control sites. Significant differences between irrigated and control samples at the 0.05 probability level are noted with asterisks.

 


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  		Fig. 5. Cumulative amount of Na added in coalbed natural gas (CBNG) water (over 2 yr in Sites 3 and 4; 3 yr in Sites 1, 2, and 5), and the differences between means of the mass of exchangeable Na and water-soluble Na calculated for the irrigated and control site soils to a depth of 120 cm.

 




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