Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD)

New, Mary

doi:10.2172/896425

Title: Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD)

Full Record
Other Related Research

Abstract

The overarching goal of this research project is to investigate and optimize the mechanisms for in situ immobilization of Pu species by naturally-occurring bacteria. Specific research objectives are: (a) investigate the mechanism of bacterial accumulation and immobilization of plutonium species by biofilm formation under aerobic conditions and (b) to demonstrate the direct and indirect stabilization of Pu via dissimilatory reduction by Geobacter metallireducens.

Authors:: New, Mary

Publication Date:: Thu Jun 01 00:00:00 EDT 2006

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 896425

Report Number(s):: ERSD-1024817-2006
R&D Project: ERSD 1024817; TRN: US200703%%574

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; AEROBIC CONDITIONS; BACTERIA; PLUTONIUM; STABILIZATION

Citation Formats


                    New, Mary. Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD).  United States: N. p., 2006. 
        Web.  doi:10.2172/896425.

Copy to clipboard


                    New, Mary. Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD).  United States.  https://doi.org/10.2172/896425

Copy to clipboard


                    New, Mary. 2006.  
        "Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD)".  United States.  https://doi.org/10.2172/896425.  https://www.osti.gov/servlets/purl/896425.

Copy to clipboard


                    
@article{osti_896425,

  title        = {Annual progress Report on research related to our research project “Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation” funded by the Environmental Remediation Sciences Division (ERSD)},

  author       = {New, Mary},

  abstractNote = {The overarching goal of this research project is to investigate and optimize the mechanisms for in situ immobilization of Pu species by naturally-occurring bacteria. Specific research objectives are: (a) investigate the mechanism of bacterial accumulation and immobilization of plutonium species by biofilm formation under aerobic conditions and (b) to demonstrate the direct and indirect stabilization of Pu via dissimilatory reduction by Geobacter metallireducens.},

  doi          = {10.2172/896425},

  url          = {https://www.osti.gov/biblio/896425},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jun 01 00:00:00 EDT 2006},

  month        = {Thu Jun 01 00:00:00 EDT 2006}

}

Copy to clipboard

Technical Report:

View Technical Report (0.30 MB)

https://doi.org/10.2172/896425

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

FINAL TECHNICAL REPORT to the DOE NABIR PROGRAM

Technical Report

This project was funded to Dr. Mary Neu (LANL) and to Dr. Patricia Holden (UCSB) during the period 10/01/04-09/30/07 with the overall objective of, as stated in the proposal, to investigate how key reactions, which are known to affect major redox-active transition metals such as Fe and Mn, can affect Pu speciation and environmental mobility. The goals included investigating a) bacterial accumulation and immobilization of Pu species by Pseudomonas putida biofilm formation, and b) bacterial mineralization and immobilization via direct enzymatic and indirect biogeochemical reduction of Pu species by Geobacter metallireducens. Through a combination of aqueous chemical, radioanalytical, spectroscopic andmore »« less
STRUCTURE AND FUNCTION OF SUBSURFACE MICROBIAL COMMUNITIES AFFECTING RADIONUCLIDE TRANSPORT AND BIOIMMOBILIZATION

Technical Report Kostka, Joel; Kerkhof, Lee; Chin, Kuk-Jeong; ...

The objectives of this project were to: (1) isolate and characterize novel anaerobic prokaryotes from subsurface environments exposed to high levels of mixed contaminants (U(VI), nitrate, sulfate), (2) elucidate the diversity and distribution of metabolically active metal- and nitrate-reducing prokaryotes in subsurface sediments, and (3) determine the biotic and abiotic mechanisms linking electron transport processes (nitrate, Fe(III), and sulfate reduction) to radionuclide reduction and immobilization. Mechanisms of electron transport and U(VI) transformation were examined under near in situ conditions in sediment microcosms and in field investigations at the Oak Ridge Field Research Center (ORFRC), in Oak Ridge, Tennessee, where themore »« less
https://doi.org/10.2172/1016167

Full Text Available
Nitrate Enhanced Microbial Cr(VI) Reduction-Final Report

Technical Report Stolz, John

A major challenge for the bioremediation of radionuclides (i.e., uranium, technetium) and metals (i.e., Cr(VI), Hg) is the co-occurrence of nitrate as it can inhibit metal transformation. Denitrification (nitrate reduction to dinitrogen gas) is considered the most important ecological process. For many metal and metalloid reducing bacteria, however, ammonia is the end product through respiratory nitrate reduction (RNRA). The focus of this work was to determine how RNRA impacts Cr(VI) transformation. The goal was to elucidate the specific mechanism(s) that limits Cr(VI) reduction in the presence of nitrate and to use this information to develop strategies that enhance Cr(VI) reductionmore »« less
https://doi.org/10.2172/1016122

Full Text Available
From Nanowires to Biofilms: An Exploration of Novel Mechanisms of Uranium Transformation Mediated by Geobacter Bacteria

Technical Report REGUERA, GEMMA

One promising strategy for the in situ bioremediation of radioactive groundwater contaminants that has been identified by the SBR Program is to stimulate the activity of dissimilatory metal-reducing microorganisms to reductively precipitate uranium and other soluble toxic metals. The reduction of U(VI) and other soluble contaminants by Geobacteraceae is directly dependent on the reduction of Fe(III) oxides, their natural electron acceptor, a process that requires the expression of Geobacter’s conductive pili (pilus nanowires). Expression of conductive pili by Geobacter cells leads to biofilm development on surfaces and to the formation of suspended biogranules, which may be physiological closer to biofilmsmore »« less
https://doi.org/10.2172/1114653

Full Text Available
Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation

Conference Boukhalfa, Hakim; Icopini, Gary; Reilly, Sean; ...

Plutonium has a long half-life (2.4 x 104 years) and is of concern because of its chemical and radiological toxicity, high-energy alpha radioactive decay. A full understanding of its speciation and interactions with environmental processes is required in order to predict, contain, or remediate contaminated sites. Under aerobic conditions Pu is sparingly soluble, existing primarily in its tetravalent oxidation state. To the extent that pentavalent and hexavalent complexes and small colloidal species form they will increase the solubility and resultant mobility from contamination sources. There is evidence that in both marine environments and brines substantial fractions of the plutonium inmore »« less
Full Text Available

Similar Records