Radiotolerance of phosphatases of a Serratia sp.: Potential for the use of this organism in the biomineralization of wastes containing radionuclides

@article{PatersonBeedle2012RadiotoleranceOP,
  title={Radiotolerance of phosphatases of a Serratia sp.: Potential for the use of this organism in the biomineralization of wastes containing radionuclides},
  author={M. Paterson-Beedle and B. Jeong and C. Lee and K. Jee and W. Kim and J. Renshaw and L. Macaskie},
  journal={Biotechnology and Bioengineering},
  year={2012},
  volume={109}
}
Aqueous wastes from nuclear fuel reprocessing present special problems of radiotoxicity of the active species. Cells of Serratia sp. were found previously to accumulate high levels of hydrogen uranyl phosphate (HUP) via the activity of a phosphatase enzyme. Uranium is of relatively low radiotoxicity whereas radionuclide fission products such as 90Sr and 137Cs are highly radiotoxic. These radionuclides can be co‐crystallized, held within the bio‐HUP “host” lattice on the bacterial cells and… Expand
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References

SHOWING 1-10 OF 39 REFERENCES
Enzymically accelerated biomineralization of heavy metals: application to the removal of americium and plutonium from aqueous flows.
TLDR
A model is presented to illustrate how nucleation and crystallization processes could enhance the removal of plutonium and neptunium from dilute solutions. Expand
Reduction of Technetium by Desulfovibrio desulfuricans: Biocatalyst Characterization and Use in a Flowthrough Bioreactor
TLDR
Resting cells of Desulfovibrio desulfuricans accumulated substantial quantities of the radionuclide when formate was supplied as the electron donor, indicating the potential of this organism as a biocatalyst to treat Tc-contaminated wastewaters. Expand
Microbially-enhanced chemisorption of heavy metals : A method for the bioremediation of solutions containing long-lived isotopes of neptunium and plutonium
Immobilized cells of a Citrobacter sp. removed neptunium and plutonium negligibly from solution using an established technique that used biologically-produced phosphate ligand (Pi) for metalExpand
Production of two phosphatases by a Citrobacter sp. grown in batch and continuous culture
TLDR
Observations are consistent with a multifactorial regulation of the acid phosphatase gene phoN by the PhoP/PhoQ sensor/regulator system which is known to govern responses to stress in the related organism Salmonella typhimurium. Expand
Accumulation of zirconium phosphate by a Serratia sp.: a benign system for the removal of radionuclides from aqueous flows
TLDR
Zirconium phosphates (ZrP) offer a potential non-toxic and non-radioactive alternative to HUP for water decontamination and the potential for drinking waterDecontamination via bio-ZRP is discussed with respect to bio-HUP and also other commercially available materials. Expand
Purification and chacterization of acid-type phosphatases from a heavy-metal-accumulating Citrobacter sp.
TLDR
An acid phosphatase from a heavy-metal-accumulating strain of a Citrobacter sp. Expand
The role of sulfate as a competitive inhibitor of enzymatically‐mediated heavy metal uptake by Citrobacter sp: implications in the bioremediation of acid mine drainage water using biogenic phosphate precipitant
Heavy metals can be removed from solution via biocrystallization with enzymatically-liberated inorganic phosphate, according to Michaelis-Menten kinetics, in free whole cells and cells immobilizedExpand
Utilisation of a hydrogen uranyl phosphate-based ion exchanger supported on a biofilm for the removal of cobalt, strontium and caesium from aqueous solutions
Abstract The problems of nuclear waste treatment and decontamination have been paramount for a number of years and continue to adversely affect the acceptability and expanded uses of nuclear power.Expand
Microbial reduction of technetium by Escherichia coli and Desulfovibrio desulfuricans: enhancement via the use of high-activity strains and effect of process parameters.
TLDR
The more rapid reduction of Tc(VII) by D. desulfuricans compared with the E. coli strains was shown, which was less sensitive to nitrate and unaffected by 10 mM or 100 mM nitrate when H(2) was the electron donor. Expand
The use of Escherichia coli bearing a phoN gene for the removal of uranium and nickel from aqueous flows
Abstract A Citrobacter sp. originally isolated from metal-polluted soil accumulates heavy metals via metal-phosphate deposition utilizing inorganic phosphate liberated via PhoN phosphatase activity.Expand
...
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3
4
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