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Title: Bimetallic Porous Iron (pFe) Materials for Remediation/Removal of Tc from Aqueous Systems

Abstract

Remediation of Tc remains an unresolved challenge at SRS and other DOE sites. The objective of this project was to develop novel bimetallic porous iron (pFe) materials for Tc removal from aqueous systems. We showed that the pFe is much more effective in removing TcO 4 - (×30) and ReO 4 - (×8) from artificial groundwater than granular iron. Tc K-edge XANES spectroscopy indicated that Tc speciation on the pFe was 18% adsorbed TcO 4 -, 28% Tc(IV) in Tc dioxide and 54% Tc(IV) into the structure of Fe hydroxide. A variety of catalytic metal nanoparticles (i.e., Ni, Cu, Zn, Ag, Sn and Pd) were successfully deposited on the pFe using scalable chemical reduction methods. The Zn-pFe was outstanding among the six bimetallic pFe materials, with a capacity increase of >100% for TcO 4 - removal and of 50% for ReO 4 - removal, compared to the pFe. These results provide a highly applicable platform for solving critical DOE and industrial needs related to nuclear environmental stewardship and nuclear power production.

Authors:
 [1]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1395971
Report Number(s):
SRNL-STI-2017-00633
TRN: US1800074
DOE Contract Number:
AC09-08SR22470
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; IRON; POROUS MATERIALS; GROUND WATER; REMEDIAL ACTION; TECHNETIUM

Citation Formats

Li, D. Bimetallic Porous Iron (pFe) Materials for Remediation/Removal of Tc from Aqueous Systems. United States: N. p., 2017. Web. doi:10.2172/1395971.
Li, D. Bimetallic Porous Iron (pFe) Materials for Remediation/Removal of Tc from Aqueous Systems. United States. doi:10.2172/1395971.
Li, D. Fri . "Bimetallic Porous Iron (pFe) Materials for Remediation/Removal of Tc from Aqueous Systems". United States. doi:10.2172/1395971. https://www.osti.gov/servlets/purl/1395971.
@article{osti_1395971,
title = {Bimetallic Porous Iron (pFe) Materials for Remediation/Removal of Tc from Aqueous Systems},
author = {Li, D.},
abstractNote = {Remediation of Tc remains an unresolved challenge at SRS and other DOE sites. The objective of this project was to develop novel bimetallic porous iron (pFe) materials for Tc removal from aqueous systems. We showed that the pFe is much more effective in removing TcO4 - (×30) and ReO4 - (×8) from artificial groundwater than granular iron. Tc K-edge XANES spectroscopy indicated that Tc speciation on the pFe was 18% adsorbed TcO4 -, 28% Tc(IV) in Tc dioxide and 54% Tc(IV) into the structure of Fe hydroxide. A variety of catalytic metal nanoparticles (i.e., Ni, Cu, Zn, Ag, Sn and Pd) were successfully deposited on the pFe using scalable chemical reduction methods. The Zn-pFe was outstanding among the six bimetallic pFe materials, with a capacity increase of >100% for TcO4 - removal and of 50% for ReO4 - removal, compared to the pFe. These results provide a highly applicable platform for solving critical DOE and industrial needs related to nuclear environmental stewardship and nuclear power production.},
doi = {10.2172/1395971},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 29 00:00:00 EDT 2017},
month = {Fri Sep 29 00:00:00 EDT 2017}
}

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