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Title: Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers

Abstract

Here, this study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents they contain. Researchers have observed that the tensile strength of the adsorbent’s polyethylene backbone is degraded after γ-irradiation to induce grafting of the amidoxime ligand. A two-part system was developed to decouple the mechanical and chemical requirements of the adsorbent by encapsulating them in a hard, permeable shell. The water flow in six shell designs and an unenclosed adsorbent for control in a recirculating flume was analyzed via a novel method developed using the measurement of radium extracted onto MnO 2 impregnated acrylic fibers. Although the water flow was found to vary with enclosure design, orien- tation to the flow, and placement within the flume, little to no difference was observed in the uranium adsorption rate between all enclosures. The results of this study will be used to design a large-scale ocean deployment of a uranium harvesting system.

Authors:
ORCiD logo [1];  [1];  [2];  [2];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Woods Hole Oceanographic Institution, Woods Hole, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1491075
Grant/Contract Number:  
NE0008268
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 57; Journal Issue: 45; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; seawater uranium; shell enclosure; symbiotic system; amidoxime; experimental investigation

Citation Formats

Haji, Maha N., Gonzalez, Jorge, Drysdale, Jessica A., Buesseler, Ken O., and Slocum, Alexander H. Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers. United States: N. p., 2018. Web. doi:10.1021/acs.iecr.8b03583.
Haji, Maha N., Gonzalez, Jorge, Drysdale, Jessica A., Buesseler, Ken O., & Slocum, Alexander H. Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers. United States. doi:10.1021/acs.iecr.8b03583.
Haji, Maha N., Gonzalez, Jorge, Drysdale, Jessica A., Buesseler, Ken O., and Slocum, Alexander H. Fri . "Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers". United States. doi:10.1021/acs.iecr.8b03583.
@article{osti_1491075,
title = {Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers},
author = {Haji, Maha N. and Gonzalez, Jorge and Drysdale, Jessica A. and Buesseler, Ken O. and Slocum, Alexander H.},
abstractNote = {Here, this study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents they contain. Researchers have observed that the tensile strength of the adsorbent’s polyethylene backbone is degraded after γ-irradiation to induce grafting of the amidoxime ligand. A two-part system was developed to decouple the mechanical and chemical requirements of the adsorbent by encapsulating them in a hard, permeable shell. The water flow in six shell designs and an unenclosed adsorbent for control in a recirculating flume was analyzed via a novel method developed using the measurement of radium extracted onto MnO2 impregnated acrylic fibers. Although the water flow was found to vary with enclosure design, orien- tation to the flow, and placement within the flume, little to no difference was observed in the uranium adsorption rate between all enclosures. The results of this study will be used to design a large-scale ocean deployment of a uranium harvesting system.},
doi = {10.1021/acs.iecr.8b03583},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 45,
volume = 57,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 19, 2019
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