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

Ladshaw, Austin; Kuo, Li-Jung; Strivens, Jonathan; Wood, Jordana; Schlafer, Nicholas; Yiacoumi, Sotira; Tsouris, Costas; Gill, Gary

doi:10.1021/acs.iecr.6b04539

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

Journal Article · Wed Feb 08 00:00:00 EST 2017 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/acs.iecr.6b04539· OSTI ID:1361350

Ladshaw, Austin ^[1]; Kuo, Li-Jung ^[2]; Strivens, Jonathan ^[2]; Wood, Jordana ^[2]; Schlafer, Nicholas ^[2]; Yiacoumi, Sotira ^[1]; Tsouris, Costas ^[1]; Gill, Gary ^[2]

Georgia Inst. of Technology, Atlanta, GA (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1361350

Journal Information:: Industrial and Engineering Chemistry Research, Vol. 56, Issue 8; ISSN 0888-5885

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 24 works

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Superhydrophilic phosphate and amide functionalized magnetic adsorbent: a new combination of anti-biofouling and uranium extraction from seawater Guo, Xuejie; Chen, Rongrong; Liu, Qi Environmental Science: Nano, Vol. 5, Issue 10 https://doi.org/10.1039/c8en00545a	journal	January 2018
Amidoxime Polymers for Uranium Adsorption: Influence of Comonomers and Temperature Ladshaw, Austin P.; Wiechert, Alexander I.; Das, Sadananda Materials, Vol. 10, Issue 11 https://doi.org/10.3390/ma10111268	journal	November 2017
The use of silver nanoparticles for the recovery of uranium from seawater by means of biofouling mitigation Byers, Margaret Flicker; Landsberger, Sheldon; Schneider, Erich Sustainable Energy & Fuels, Vol. 2, Issue 10 https://doi.org/10.1039/c8se00228b	journal	January 2018

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38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
uranium
seawater
adsorption capacity
Marine Sciences Laboratory
amidoxime
current velocity

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

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