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Title: The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies

Abstract

The Pacific Northwest National Laboratory’s (PNNL) Marine Science Laboratory (MSL) located along the coast of Washington State is evaluating the performance of uranium adsorption materials being developed for seawater extraction under realistic marine conditions with natural seawater. Two types of exposure systems were employed in this program: flow-through columns for testing of fixed beds of individual fibers and pellets and a recirculating water flume for testing of braided adsorbent material. Testing consists of measurements of the adsorption of uranium and other elements from seawater as a function of time, typically 42 to 56 day exposures, to determine the adsorbent capacity and adsorption rate (kinetics). Analysis of uranium and other trace elements collected by the adsorbents was conducted following strong acid digestion of the adsorbent with 50% aqua regia using either Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) or Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The ORNL 38H adsorbent had a 56 day adsorption capacity of 3.30 ± 0.68 g U/ kg adsorbent (normalized to a salinity of 35 psu), a saturation adsorption capacity of 4.89 ± 0.83 g U/kg of adsorbent material (normalized to a salinity of 35 psu) and a half-saturation time of 28 ± 10 days. The AF1more » adsorbent material had a 56 day adsorption capacity of 3.9 ± 0.2 g U/kg adsorbent material (normalized to a salinity of 35 psu), a saturation capacity of 5.4 ± 0.2 g U/kg adsorbent material (normalized to a salinity of 35 psu) and a half saturation time of 23 ± 2 days. The ORNL amidoxime-based adsorbent materials are not specific for uranium, but also adsorb other elements from seawater. The major doubly charged cations in seawater (Ca and Mg) account for a majority of the cations adsorbed (61% by mass and 74% by molar percent). For the ORNL AF1 adsorbent material, U is the 4th most abundant element adsorbed by mass and 7th most abundant by molar percentage« less

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1337229
Report Number(s):
PNNL-SA-113457
Journal ID: ISSN 0888-5885; AF5855000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 55; Journal Issue: 15; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; uranium; seawater; amidoxime; Marine Sciences Laboratory; trace elements

Citation Formats

Gill, Gary A., Kuo, Li-Jung, Janke, Chris J., Park, Jiyeon, Jeters, Robert T., Bonheyo, George T., Pan, Horng-Bin, Wai, Chien, Khangaonkar, Tarang, Bianucci, Laura, Wood, Jordana R., Warner, Marvin G., Peterson, Sonja, Abrecht, David G., Mayes, Richard T., Tsouris, Costas, Oyola, Yatsandra, Strivens, Jonathan E., Schlafer, Nicholas J., Addleman, R. Shane, Chouyyok, Wilaiwan, Das, Sadananda, Kim, Jungseung, Buesseler, Ken, Breier, Crystal, and D’Alessandro, Evan. The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies. United States: N. p., 2016. Web. doi:10.1021/acs.iecr.5b03649.
Gill, Gary A., Kuo, Li-Jung, Janke, Chris J., Park, Jiyeon, Jeters, Robert T., Bonheyo, George T., Pan, Horng-Bin, Wai, Chien, Khangaonkar, Tarang, Bianucci, Laura, Wood, Jordana R., Warner, Marvin G., Peterson, Sonja, Abrecht, David G., Mayes, Richard T., Tsouris, Costas, Oyola, Yatsandra, Strivens, Jonathan E., Schlafer, Nicholas J., Addleman, R. Shane, Chouyyok, Wilaiwan, Das, Sadananda, Kim, Jungseung, Buesseler, Ken, Breier, Crystal, & D’Alessandro, Evan. The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies. United States. doi:10.1021/acs.iecr.5b03649.
Gill, Gary A., Kuo, Li-Jung, Janke, Chris J., Park, Jiyeon, Jeters, Robert T., Bonheyo, George T., Pan, Horng-Bin, Wai, Chien, Khangaonkar, Tarang, Bianucci, Laura, Wood, Jordana R., Warner, Marvin G., Peterson, Sonja, Abrecht, David G., Mayes, Richard T., Tsouris, Costas, Oyola, Yatsandra, Strivens, Jonathan E., Schlafer, Nicholas J., Addleman, R. Shane, Chouyyok, Wilaiwan, Das, Sadananda, Kim, Jungseung, Buesseler, Ken, Breier, Crystal, and D’Alessandro, Evan. Sun . "The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies". United States. doi:10.1021/acs.iecr.5b03649.
@article{osti_1337229,
title = {The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies},
author = {Gill, Gary A. and Kuo, Li-Jung and Janke, Chris J. and Park, Jiyeon and Jeters, Robert T. and Bonheyo, George T. and Pan, Horng-Bin and Wai, Chien and Khangaonkar, Tarang and Bianucci, Laura and Wood, Jordana R. and Warner, Marvin G. and Peterson, Sonja and Abrecht, David G. and Mayes, Richard T. and Tsouris, Costas and Oyola, Yatsandra and Strivens, Jonathan E. and Schlafer, Nicholas J. and Addleman, R. Shane and Chouyyok, Wilaiwan and Das, Sadananda and Kim, Jungseung and Buesseler, Ken and Breier, Crystal and D’Alessandro, Evan},
abstractNote = {The Pacific Northwest National Laboratory’s (PNNL) Marine Science Laboratory (MSL) located along the coast of Washington State is evaluating the performance of uranium adsorption materials being developed for seawater extraction under realistic marine conditions with natural seawater. Two types of exposure systems were employed in this program: flow-through columns for testing of fixed beds of individual fibers and pellets and a recirculating water flume for testing of braided adsorbent material. Testing consists of measurements of the adsorption of uranium and other elements from seawater as a function of time, typically 42 to 56 day exposures, to determine the adsorbent capacity and adsorption rate (kinetics). Analysis of uranium and other trace elements collected by the adsorbents was conducted following strong acid digestion of the adsorbent with 50% aqua regia using either Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) or Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The ORNL 38H adsorbent had a 56 day adsorption capacity of 3.30 ± 0.68 g U/ kg adsorbent (normalized to a salinity of 35 psu), a saturation adsorption capacity of 4.89 ± 0.83 g U/kg of adsorbent material (normalized to a salinity of 35 psu) and a half-saturation time of 28 ± 10 days. The AF1 adsorbent material had a 56 day adsorption capacity of 3.9 ± 0.2 g U/kg adsorbent material (normalized to a salinity of 35 psu), a saturation capacity of 5.4 ± 0.2 g U/kg adsorbent material (normalized to a salinity of 35 psu) and a half saturation time of 23 ± 2 days. The ORNL amidoxime-based adsorbent materials are not specific for uranium, but also adsorb other elements from seawater. The major doubly charged cations in seawater (Ca and Mg) account for a majority of the cations adsorbed (61% by mass and 74% by molar percent). For the ORNL AF1 adsorbent material, U is the 4th most abundant element adsorbed by mass and 7th most abundant by molar percentage},
doi = {10.1021/acs.iecr.5b03649},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 15,
volume = 55,
place = {United States},
year = {2016},
month = {2}
}