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Dynamics of microbial community composition and function during in-situ bioremediation of a uranium-contaminated aquifer

Description: A pilot-scale system was established to examine the feasibility of in situ U(VI) immobilization at a highly contaminated aquifer (U.S. DOE Integrated Field Research Challenge site, Oak Ridge, TN). Ethanol was injected intermittently as an electron donor to stimulate microbial U(VI) reduction, and U(VI) concentrations fell to below the Environmental Protection Agency drinking water standard (0.03 mg liter{sup -1}). Microbial communities from three monitoring wells were examined during active U(V… more
Date: August 15, 2010
Creator: Van Nostrand, J. D.; Wu, L.; Wu, W. M.; Huang, A.; Gentry, T. J.; Deng, Y. et al.
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Partner: UNT Libraries Government Documents Department
open access

Effects of Nitrate Exposure on the Functional Structure of a Microbial Community in a Uranium-contaminated Aquifer

Description: Increasing nitrogen deposition, increasing atmospheric CO2, and decreasing biodiversity are three main environmental changes occurring on a global scale. The BioCON (Biodiversity, CO2, and Nitrogen) ecological experiment site at the University of Minnesota's Cedar Creek Ecosystem Science Reserve started in 1997, to better understand how these changes would affect soil systems. To understand how increasing nitrogen deposition affects the microbial community diversity, heterogeneity, and function… more
Date: May 17, 2010
Creator: Van Nostrand, Joy; Waldron, P.; Wu, W.; Zhou, B.; Wu, Liyou; Deng, Ye et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Responses of microbial community functional structures to pilot-scale uranium in situ bioremediation

Description: A pilot-scale field test system with an inner loop nested within an outer loop was constructed for in situ U(VI) bioremediation at a US Department of Energy site, Oak Ridge, TN. The outer loop was used for hydrological protection of the inner loop where ethanol was injected for biostimulation of microorganisms for U(VI) reduction/immobilization. After 2 years of biostimulation with ethanol, U(VI) levels were reduced to below drinking water standard (<30 {micro}gl{sup -1}) in the inner loop m… more
Date: February 15, 2010
Creator: Xu, M.; Wu, W.-M.; Wu, L.; He, Z.; Van Nostrand, J.D.; Deng, Y. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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