skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Investigations of the Fundamental Surface Reactions Involved in the Sorption and Desorption of Radionuclides

Abstract

Models for describing solution- and surface-phase reactions have been used for 30 years, but only recently applicable to complex surfaces. Duff et al., using micro-XANES, found that Pu was concentrated on Mn-oxide and smectite phases of zeolitic tuff, providing an evaluation of contaminant speciation on surfaces for modeling. Experiments at Los Alamos demonstrated that actinides display varying surface residence time distributions, probably reflective of mineral surface heterogeneity. We propose to investigate the sorption/desorption behavior of radionuclides from mineral surfaces, as effected by microorganisms, employing isolates from Nevada Test Site deep alluvium as a model system. Characterizations will include surface area, particle size distribution, x-ray diffraction (XRD), microprobe analysis, extractions, and microbiology. Surface interactions will be assessed by electron spectroscopy (XPS), x-ray absorption fine structure spectroscopy (XAFS), X-ray emission spectroscopy, transmission electron microscopy (TEM) and Scanning electron microscopy (SEM). Desert Research Institute (DRI), University of Nevada, Reno (UNR), and University of Nevada, Las Vegas (UNLV) researchers will collaborate to enhance scientific infrastructure and the understanding of contaminant behavior on surfaces, with broader implications for the management of DOE sites.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Univ. of Nevada, Reno, NV (United States)
Sponsoring Org.:
USDOE Office of Science and Technology (EM-50)
OSTI Identifier:
1012469
Report Number(s):
DOEER46295
TRN: US1201231
DOE Contract Number:  
FG02-06ER46295
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; ABSORPTION; ACTINIDES; DESORPTION; DISTRIBUTION FUNCTIONS; ELECTRON SPECTROSCOPY; EMISSION SPECTROSCOPY; FINE STRUCTURE; MICROORGANISMS; NEVADA TEST SITE; PARTICLE SIZE; RADIOISOTOPES; RESIDENCE HALF-TIME; SCANNING ELECTRON MICROSCOPY; SMECTITE; SORPTION; SPECTROSCOPY; SURFACE AREA; TRANSMISSION ELECTRON MICROSCOPY; TUFF; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; radionuclides, sorption, desorption, bacteria, modeling, geochemical, microscopy, groundwater

Citation Formats

Czerwinski, Ken, Heske, Clemens, Moser, Duane, Misra, Mnoranjan, and McMillion, Glen. Investigations of the Fundamental Surface Reactions Involved in the Sorption and Desorption of Radionuclides. United States: N. p., 2011. Web. doi:10.2172/1012469.
Czerwinski, Ken, Heske, Clemens, Moser, Duane, Misra, Mnoranjan, & McMillion, Glen. Investigations of the Fundamental Surface Reactions Involved in the Sorption and Desorption of Radionuclides. United States. doi:10.2172/1012469.
Czerwinski, Ken, Heske, Clemens, Moser, Duane, Misra, Mnoranjan, and McMillion, Glen. Wed . "Investigations of the Fundamental Surface Reactions Involved in the Sorption and Desorption of Radionuclides". United States. doi:10.2172/1012469. https://www.osti.gov/servlets/purl/1012469.
@article{osti_1012469,
title = {Investigations of the Fundamental Surface Reactions Involved in the Sorption and Desorption of Radionuclides},
author = {Czerwinski, Ken and Heske, Clemens and Moser, Duane and Misra, Mnoranjan and McMillion, Glen},
abstractNote = {Models for describing solution- and surface-phase reactions have been used for 30 years, but only recently applicable to complex surfaces. Duff et al., using micro-XANES, found that Pu was concentrated on Mn-oxide and smectite phases of zeolitic tuff, providing an evaluation of contaminant speciation on surfaces for modeling. Experiments at Los Alamos demonstrated that actinides display varying surface residence time distributions, probably reflective of mineral surface heterogeneity. We propose to investigate the sorption/desorption behavior of radionuclides from mineral surfaces, as effected by microorganisms, employing isolates from Nevada Test Site deep alluvium as a model system. Characterizations will include surface area, particle size distribution, x-ray diffraction (XRD), microprobe analysis, extractions, and microbiology. Surface interactions will be assessed by electron spectroscopy (XPS), x-ray absorption fine structure spectroscopy (XAFS), X-ray emission spectroscopy, transmission electron microscopy (TEM) and Scanning electron microscopy (SEM). Desert Research Institute (DRI), University of Nevada, Reno (UNR), and University of Nevada, Las Vegas (UNLV) researchers will collaborate to enhance scientific infrastructure and the understanding of contaminant behavior on surfaces, with broader implications for the management of DOE sites.},
doi = {10.2172/1012469},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {4}
}