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Title: Uranium Adsorbent Fibers Prepared by Atom-Transfer Radical Polymerization (ATRP) from Poly(vinyl chloride)- co -chlorinated Poly(vinyl chloride) (PVC- co -CPVC) Fiber

Journal Article · · Industrial and Engineering Chemistry Research
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The need to secure future supplies of energy attracts researchers in several countries to a vast resource of nuclear energy fuel: uranium in seawater (estimated at 4.5 billion tons in seawater). In this study, we developed effective adsorbent fibers for the recovery of uranium from seawater via atom-transfer radical polymerization (ATRP) from a poly- (vinyl chloride)-co-chlorinated poly(vinyl chloride) (PVC-co-CPVC) fiber. ATRP was employed in the surface graft polymerization of acrylonitrile (AN) and tert-butyl acrylate (tBA), precursors for uranium-interacting functional groups, from PVC-co-CPVC fiber. The [tBA]/[AN] was systematically varied to identify the optimal ratio between hydrophilic groups (from tBA) and uranyl-binding ligands (from AN). The best performing adsorbent fiber, the one with the optimal [tBA]/[AN] ratio and a high degree of grafting (1390%), demonstrated uranium adsorption capacities that are significantly greater than those of the Japan Atomic Energy Agency (JAEA) reference fiber in natural seawater tests (2.42-3.24 g/kg in 42 days of seawater exposure and 5.22 g/kg in 49 days of seawater exposure, versus 1.66 g/kg in 42 days of seawater exposure and 1.71 g/kg in 49 days of seawater exposure for JAEA). Adsorption of other metal ions from seawater and their corresponding kinetics were also studied. The grafting of alternative monomers for the recovery of uranium from seawater is now under development by this versatile technique of ATRP.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1327088
Report Number(s):
PNNL-SA-120242; AF5855000
Journal Information:
Industrial and Engineering Chemistry Research, Vol. 55, Issue 15; ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

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Polyamidoxime chain length drives emergent metal-binding phenomena journal January 2019
Retracted Article: A layered double hydroxide assembled on a g-C 3 N 4 -modified hollow carbon sphere as an adsorbent for the removal of uranium( vi ) journal January 2019
Crown ether-type organic composite adsorbents embedded in high-porous silica beads for simultaneous recovery of lithium and uranium in seawater journal September 2019
Ultrafast and Highly Selective Uranium Extraction from Seawater by Hydrogel-like Spidroin-based Protein Fiber journal July 2019
Functional polymer brushes for highly efficient extraction of uranium from seawater journal October 2018
Polypropylene nonwoven fabric modified with oxime and guanidine for antibiofouling and highly selective uranium recovery from seawater journal May 2019
Synthesis of novel nanomaterials and their application in efficient removal of radionuclides journal June 2019
Significantly Enhanced Uranium Extraction from Seawater with Mass Produced Fully Amidoximated Nanofiber Adsorbent journal October 2018
Ultrafast and Highly Selective Uranium Extraction from Seawater by Hydrogel‐like Spidroin‐based Protein Fiber journal July 2019
Rational Design of Porous Nanofiber Adsorbent by Blow-Spinning with Ultrahigh Uranium Recovery Capacity from Seawater journal November 2018
Fibers with Hyper-Crosslinked Functional Porous Frameworks journal February 2018
Interfacial growth of a metal–organic framework (UiO-66) on functionalized graphene oxide (GO) as a suitable seawater adsorbent for extraction of uranium( vi ) journal January 2017
Amidoxime Polymers for Uranium Adsorption: Influence of Comonomers and Temperature journal November 2017
Siderophore-inspired chelator hijacks uranium from aqueous medium journal February 2019
A Universally Applicable Strategy for Construction of Anti‐Biofouling Adsorbents for Enhanced Uranium Recovery from Seawater journal March 2019
A highly efficient uranium grabber derived from acrylic fiber for extracting uranium from seawater journal January 2020
A Bio‐inspired Nano‐pocket Spatial Structure for Targeting Uranyl Capture journal March 2020
The use of silver nanoparticles for the recovery of uranium from seawater by means of biofouling mitigation journal January 2018

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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
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