Uranium bioprecipitation mediated by yeasts utilizing organic phosphorus substrates

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

“…[ 83 ] Another advantage of yeast is its ability to differentiate between different metals such as selenium, antimony, and mercury based on their toxicity. Because of its cost effectiveness, [ 84 ] yeast has been applied for biosorption of toxic metal ions including uranium, [ 85,86 ] chromium, [ 87 ] cadium, and lead. [ 81 ]…”

“…Fungi may also be used for the precipitation of metal‐containing carbonates and phosphates; they provide a new method of metal biorecovery and purification, including Cu 2+ , Sr 2+ , Pb 2+ , As 3+ , U 6+ , and Cr 6+ [ 71,79,260 ] As described previously, yeasts have been investigated extensively for bioremediation of heavy‐metal ions. [ 83–94 ] An example of the use of S. cerevisiae for the biomineralization of uranium (VI) is illustrated in Figure . [ 265 ] Uranium exists predominantly in two environmentally important oxidation states, U(IV) and U(VI).…”

Uranium Bioreduction and Biomineralization

“…Further, a selection of yeast species have been demonstrated to mediate U(VI) biomineralization through the formation of uranium phosphate biominerals when utilizing an organic source of phosphorus (G2P or phytic acid). The formation of uranyl phosphate species such as meta-ankoleite, chernikovite, bassetite, and uramphite on cell surfaces confirmed that yeast species can also have phosphatase-mediated uranium biomineralization capability (Liang et al, 2016). Some microorganisms associated with U(VI) biomineralization are listed in Table 2.…”

“…Due to its stability in varied environmental conditions, uranium biomineralization, which may also result from bioreduction, has also been the subject of much research. In addition to bacteria, fungi are also capable of uranium biotransformations (Fomina et al, 2007(Fomina et al, , 2008Liang et al, 2015Liang et al, , 2016. The aim of this review is to outline some recent developments in uranium bioreduction and biomineralization research with bacteria and fungi regarding mechanisms, influential factors, and obstacles to application.…”

Effects of riboflavin and AQS as electron shuttles on U(vi) reduction and precipitation byShewanella putrefaciens

“…9,10 Some microbes which were also reported can accumuled and immobilize uranium via the biomineralization process, precipitating uranium through complexation with anions. 11,12 Extracellular electron transfer (EET) is one of the most fundamental life processes, which the exchange of information and energy with other microorganisms or with their external environments. Direct EET, conductive nanowires, and electron shuttles-mediated EET have been identied as main mechanism of EET.…”