Interactions of uranium with bacteria and kaolinite clay

Microbial communities in bentonite formations and their interactions with uranium

“…U accumulation at the cell surface by yeasts has been reported previously for Saccharomyces cerevisiae (Suzuki and Banfield, 1999;Wang and Chen, 2006). In addition, Ohnuki et al, 2005, identified the cell surface U precipitates as uranyl-phosphate mineral with a structure similar to that of H-autunite. Intracellular U uptake has been described in fungi, including the lichen Piltigera membranacea where U was localized mainly within cellular organelles termed ''concentric bodies'' Griffiths and Greenwood, 1972).…”

Isolation and analyses of uranium tolerant Serratia marcescens strains and their utilization for aerobic uranium U(VI) bioadsorption

“…Radionuclides/metal-enriched reserves, as the one mentioned above, are known to be colonized by metal-resistant and/or accumulating microbial strains (Francis et al, 2004;Schmidt et al, 2005;Ohnuki et al, 2005;Pollmann et al, 2006). Such environments result in adaptation of microorganisms, which influences the migration of radionuclides/heavy metals through biosorption, bioprecipitation, extracellular sequestration, transport mechanisms, and/or chelation.…”

Immobilization of heavy metals by Pseudomonas putida CZ1/goethite composites from solution

“…[13]). We assume that the heavy metals complex with the carboxyl groups should have nearly the same stability constant as that with acetic acid because of the structural similarity of these functional groups [32]. Accordingly this supposition leads to the idea that the heavy metals associated with carboxyl functional groups could be desorbed with CH 3 COOK.…”