Coalbed natural gas (CBNG) produced water: geochemical processes and beneficial uses in semi- arid environments
(0) Coalbed natural gas (CBNG) produced water is usually disposed into nearby constructed disposal ponds. Geochemistry of produced water, particularly in semiarid environments, is not clearly understood. The objectives of this study were to: 1) collect produced water samples at discharge wells and corresponding disposal ponds and monitor pH, major elements, and trace elements, and 2) develop beneficial uses for CBNG produced water for semi-arid environments. Discharge wells and corresponding disposal ponds were sampled from five different watersheds within the Powder River Basin (PRB), Wyoming from 2003 to 2005. From Na, Ca, and Mg measurements, sodium adsorption ratios (SAR) were calculated. Results suggest that discharge wells are chemically different from corresponding disposal ponds. Sodium, alkalinity, pH and most trace metal concentrations increased from discharge well to disposal pond, while Ca decreased from discharge wells to associated disposal ponds due to calcite precipitation. Overall results of this study will be important to determine beneficial uses (e. g. irrigation, livestock/wildlife water, and aquaculture) for CBNG produced water in semiarid environments.
Energy salts sodium adsorption ratio trace elements
Richard E. Jackson, K. J. Reddy
Department of Renewable Resources, University of Wyoming, Laramie, Wyoming 82071 USA
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
372-373
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）