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Title: Reactivity of iron-rich phyllosilicates with uranium and chromium through redox transition zones

Abstract

This project performed thermodynamic, kinetic, and mineral structural studies on the reactivity of phyllosilicate Fe(II/III) with metal-reducing bacteria, and with two important poly-valent DOE contaminants (chromium and uranium) that show high mobility in their oxidized state. We focused on Fe-bearing phyllosilicates because these are important components of the reactive, fines fraction of Hanford, Oak Ridge, and Idaho National Laboratory sediments. Iron-bearing phyllosilicates strongly influence the redox state and mobility of Cr and U because of their limited hydraulic conductivity, high specific surface area, and redox reactivity. This was a collaborative project between Penn State (W.D. Burgos – PI), Miami University (H. Dong – Co-PI), and Argonne National Laboratory (K. Kemner and M. Boyanov – Co-PIs). Penn State and Miami University were funded together but separately from ANL. This report summarizes research findings and publications produced by Penn State and Miami University.

Authors:
 [1]
  1. Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Science and Technology (ST)
OSTI Identifier:
1328434
Report Number(s):
DE-SC0005333
TRN: US1700351
DOE Contract Number:
SC0005333
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 58 GEOSCIENCES; CHROMIUM; IRON; URANIUM; OAK RIDGE RESERVATION; HANFORD RESERVATION; IDAHO NATIONAL LABORATORY; ACTIVATION ENERGY; BACTERIA; ENVIRONMENTAL TRANSPORT; VALENCE; SILICATE MINERALS; IRON SILICATES; SEDIMENTS

Citation Formats

Burgos, William D. Reactivity of iron-rich phyllosilicates with uranium and chromium through redox transition zones. United States: N. p., 2016. Web. doi:10.2172/1328434.
Burgos, William D. Reactivity of iron-rich phyllosilicates with uranium and chromium through redox transition zones. United States. doi:10.2172/1328434.
Burgos, William D. 2016. "Reactivity of iron-rich phyllosilicates with uranium and chromium through redox transition zones". United States. doi:10.2172/1328434. https://www.osti.gov/servlets/purl/1328434.
@article{osti_1328434,
title = {Reactivity of iron-rich phyllosilicates with uranium and chromium through redox transition zones},
author = {Burgos, William D.},
abstractNote = {This project performed thermodynamic, kinetic, and mineral structural studies on the reactivity of phyllosilicate Fe(II/III) with metal-reducing bacteria, and with two important poly-valent DOE contaminants (chromium and uranium) that show high mobility in their oxidized state. We focused on Fe-bearing phyllosilicates because these are important components of the reactive, fines fraction of Hanford, Oak Ridge, and Idaho National Laboratory sediments. Iron-bearing phyllosilicates strongly influence the redox state and mobility of Cr and U because of their limited hydraulic conductivity, high specific surface area, and redox reactivity. This was a collaborative project between Penn State (W.D. Burgos – PI), Miami University (H. Dong – Co-PI), and Argonne National Laboratory (K. Kemner and M. Boyanov – Co-PIs). Penn State and Miami University were funded together but separately from ANL. This report summarizes research findings and publications produced by Penn State and Miami University.},
doi = {10.2172/1328434},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 9
}

Technical Report:

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