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Title: Influence of Current Velocity on Uranium Adsorption from Seawater Using an Amidoxime-Based Polymer Fiber Adsorbent

Abstract

Passive adsorption using amidoxime-based polymeric adsorbents is being developed for uranium recovery from seawater. The local oceanic current velocity where the adsorbent is deployed is a key variable in determining locations that will maximize uranium adsorption rates. Two independent experimental approaches using flow-through columns and recirculating flumes were used to assess the influence of linear velocity on uranium uptake kinetics by the adsorbent. Little to no difference was observed in the uranium adsorption rate vs. linear velocity for seawater exposure in flow-through columns. In contrast, adsorption results from seawater exposure in a recirculating flume showed a nearly linear trend with current velocity. The difference in adsorbent performance between columns and flume can be attributed to (i) flow resistance provided by the adsorbent braid in the flume and (ii) enhancement in braid movement (fluttering) with increasing linear velocity.

Authors:
ORCiD logo; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1356484
Report Number(s):
PNNL-SA-124030
Journal ID: ISSN 0888-5885; AF5855000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Industrial and Engineering Chemistry Research; Journal Volume: 56; Journal Issue: 8
Country of Publication:
United States
Language:
English
Subject:
uranium; seawater; adsorption capacity; Marine Sciences Laboratory; amidoxime; current velocity

Citation Formats

Ladshaw, Austin, Kuo, Li-Jung, Strivens, Jonathan, Wood, Jordana, Schlafer, Nicholas, Yiacoumi, Sotira, Tsouris, Costas, and Gill, Gary. Influence of Current Velocity on Uranium Adsorption from Seawater Using an Amidoxime-Based Polymer Fiber Adsorbent. United States: N. p., 2017. Web. doi:10.1021/acs.iecr.6b04539.
Ladshaw, Austin, Kuo, Li-Jung, Strivens, Jonathan, Wood, Jordana, Schlafer, Nicholas, Yiacoumi, Sotira, Tsouris, Costas, & Gill, Gary. Influence of Current Velocity on Uranium Adsorption from Seawater Using an Amidoxime-Based Polymer Fiber Adsorbent. United States. doi:10.1021/acs.iecr.6b04539.
Ladshaw, Austin, Kuo, Li-Jung, Strivens, Jonathan, Wood, Jordana, Schlafer, Nicholas, Yiacoumi, Sotira, Tsouris, Costas, and Gill, Gary. Fri . "Influence of Current Velocity on Uranium Adsorption from Seawater Using an Amidoxime-Based Polymer Fiber Adsorbent". United States. doi:10.1021/acs.iecr.6b04539.
@article{osti_1356484,
title = {Influence of Current Velocity on Uranium Adsorption from Seawater Using an Amidoxime-Based Polymer Fiber Adsorbent},
author = {Ladshaw, Austin and Kuo, Li-Jung and Strivens, Jonathan and Wood, Jordana and Schlafer, Nicholas and Yiacoumi, Sotira and Tsouris, Costas and Gill, Gary},
abstractNote = {Passive adsorption using amidoxime-based polymeric adsorbents is being developed for uranium recovery from seawater. The local oceanic current velocity where the adsorbent is deployed is a key variable in determining locations that will maximize uranium adsorption rates. Two independent experimental approaches using flow-through columns and recirculating flumes were used to assess the influence of linear velocity on uranium uptake kinetics by the adsorbent. Little to no difference was observed in the uranium adsorption rate vs. linear velocity for seawater exposure in flow-through columns. In contrast, adsorption results from seawater exposure in a recirculating flume showed a nearly linear trend with current velocity. The difference in adsorbent performance between columns and flume can be attributed to (i) flow resistance provided by the adsorbent braid in the flume and (ii) enhancement in braid movement (fluttering) with increasing linear velocity.},
doi = {10.1021/acs.iecr.6b04539},
journal = {Industrial and Engineering Chemistry Research},
number = 8,
volume = 56,
place = {United States},
year = {Fri Feb 17 00:00:00 EST 2017},
month = {Fri Feb 17 00:00:00 EST 2017}
}