PMID: 18200862Jan 19, 2008Paper

Uranium immobilization by sulfate-reducing biofilms grown on hematite, dolomite, and calcite

Environmental Science & Technology
Enrico MarsiliZbigniew Lewandowski

Abstract

Biofilms of sulfate-reducing bacteria Desulfovibrio desulfuricans G20 were used to reduce dissolved U(VI) and subsequently immobilize U(IV) in the presence of uranium-complexing carbonates. The biofilms were grown in three identically operated fixed bed reactors, filled with three types of minerals: one noncarbonate-bearing mineral (hematite) and two carbonate-bearing minerals (calcite and dolomite). The source of carbonates in the reactors filled with calcite and dolomite were the minerals, while in the reactor filled with hematite it was a 10 mM carbonate buffer, pH 7.2, which we added to the growth medium. Our five-month study demonstrated that the sulfate-reducing biofilms grown in all reactors were able to immobilize/reduce uranium efficiently, despite the presence of uranium-complexing carbonates.

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Citations

May 4, 2010·Applied and Environmental Microbiology·Michael R BenoitA Matin
Apr 15, 2015·Research in Microbiology·Sandrine KoechlerFlorence Arsène-Ploetze
Apr 27, 2013·Microbial Biotechnology·Dhan PrakashOm V Singh
Aug 17, 2014·Applied and Environmental Microbiology·Dena L CologgiGemma Reguera
Jul 12, 2018·Journal of Applied Biomaterials & Functional Materials·Luigi CoppolaFan Yang
Feb 6, 2009·Environmental Science & Technology·Satyavathi ChinniBradley M Tebo
May 30, 2019·ACS Applied Materials & Interfaces·Lin XuShuao Wang

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