Influence of Sediment Bioreduction and Reoxidation on Uranium Sorption
نویسندگان
چکیده
منابع مشابه
Influence of sediment bioreduction and reoxidation on uranium sorption.
The influence of sediment bioreduction and reoxidation on U(VI) sorption was studied using Fe(II) oxide-containing saprolite from the U.S. Department of Energy (DOE) Oak Ridge site. Bioreduced sediments were generated by anoxic incubation with a metal-reducing bacterium, Shewanella putrefaciens strain CN32, supplied with lactate as an electron donor. The reduced sediments were subsequently reox...
متن کاملIn situ bioreduction of uranium (VI) to submicromolar levels and reoxidation by dissolved oxygen.
Groundwater within Area 3 of the U.S. Department of Energy (DOE) Environmental Remediation Sciences Program (ERSP) Field Research Center at Oak Ridge, TN (ORFRC) contains up to 135 microM uranium as U(VI). Through a series of experiments at a pilot scale test facility, we explored the lower limits of groundwater U(VI) that can be achieved by in-situ biostimulation and the effects of dissolved o...
متن کاملInfluence of calcite and dissolved calcium on uranium(VI) sorption to a hanford subsurface sediment.
The influence of calcite and dissolved calcium on U(VI) adsorption was investigated using a calcite-containing sandy silt/clay sediment from the U. S. Department of Energy Hanford site. U(VI) adsorption to sediment, treated sediment, and sediment size fractions was studied in solutions that both had and had not been preequilibrated with calcite, at initial [U(VI)] = 10(-7)-10(-5) mol/L and fina...
متن کاملSorption and bioreduction of hexavalent uranium at a military facility by the Chesapeake Bay.
Directly adjacent to the Chesapeake Bay lies the Aberdeen Proving Ground, a U.S. Army facility where testing of armor-piercing ammunitions has resulted in the deposition of >70,000 kg of depleted uranium (DU) to local soils and sediments. Results of previous environmental monitoring suggested limited mobilization in the impact area and no transport of DU into the nation's largest estuary. To de...
متن کاملIn situ Bioreduction of Uranium ( VI ) to Submicromolar 1 Levels and Reoxidation by Dissolved Oxygen 2 Supporting Information
WEI-MIN WU, JACK CARLEY, JIAN LUO, MATTHEW A GINDER-VOGEL, ERICK 4 CARDENAS, MARY BETH LEIGH, CHAICHI HWANG, SHELLY D. KELLY, CHAUNGMIN 5 RUAN, LIYOU WU, JOY VAN NOSTRAND, TERRY GENTRY , KENNETH LOWE, TONIA 6 MEHLHORN, SUE CARROLL, WENSUI LOU, MATTHEW W. FIELDS, BAOHUA GU, 7 DAVID WATSON, KENNETH M. KEMNER, TERENCE MARSH, JAMES TIEDJE, JIZHONG 8 ZHOU, SCOTT FENDORF, PETER K. KITANIDIS, PHILIP M...
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ژورنال
عنوان ژورنال: Environmental Science & Technology
سال: 2005
ISSN: 0013-936X,1520-5851
DOI: 10.1021/es048501y