Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers
Name
Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers.pdf
Description
Accepted version
Size
6.81 MB
Format
Adobe PDF
Checksum (MD5)
3c8488ae0dab60392145779c516bfb37
Author(s)
Haji, Maha N.
Gonzalez, Jorge F. (Jorge Felix)
Drysdale, Jessica A.
Buesseler, Ken O.
Slocum, Alexander H
Date Issued
November 2018
Journal
Industrial & Engineering Chemical Research
Publisher
American Chemical Society (ACS)
Citation
Haji, Maha N. et al. "Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers." Industrial & Engineering Chemical Research 57, 45 (November 2018): 15534–15541 © 2018 American Chemical Society
Version
Author's final manuscript
Abstract
This study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents contained within. 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, orientation 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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/acs.iecr.8b03583
