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000863091 005__ 20240708133839.0
000863091 037__ $$aFZJ-2019-03205
000863091 041__ $$aEnglish
000863091 0881_ $$aNTRD-MRWFD-2019- M3FT-19IN030102018
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000863091 1001_ $$0P:(DE-HGF)0$$aHorne, Gregory P.$$b0$$eCorresponding author
000863091 245__ $$aRadiolysis of Hydrophilic Diglycolamides in Aqueous Nitrate Solution
000863091 260__ $$c2019
000863091 300__ $$a21 p.
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000863091 3367_ $$0PUB:(DE-HGF)15$$2PUB:(DE-HGF)$$aInternal Report$$bintrep$$mintrep$$s1561623008_25820
000863091 502__ $$cIdaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, USA
000863091 520__ $$aThe radiation chemistry of a series of hydrophilic DGAs (TEDGA, Me-TEDGA, Me2-TEDGA, and TPDGA) has been investigated under neutral pH, concentrated (5.0 M), aqueous nitrate solution conditions. A combination of steady-state gamma and time-resolved pulsed electron irradiation experiments, supported by advanced analytical techniques and multi-scale modeling calculations, have demonstrated that: (i) the investigated hydrophilic DGAs undergo first-order decay with an average dose constant of (3.48 ± 0.28) × 10–6 Gy–1; (ii) their degradation product distributions are similar to those under pure water conditions, except for the appearance of NOx adducts; and (iii) radiolysis is driven by hydroxyl and nitrate radical oxidation chemistry moderated by secondary degradation product scavenging reactions. Overall, the radiolysis of hydrophilic DGAs in 5.0 M nitrate solutions is significantly slower and less structurally sensitive than under pure water conditions, but similar to their lipophilic analogs. These findings are promising for the deployment of hydrophilic DGAs as actinide aqueous phase stripping and hold-back agents, due to the presence of nitrate in envisioned large-scale process conditions.
000863091 536__ $$0G:(DE-HGF)POF3-161$$a161 - Nuclear Waste Management (POF3-161)$$cPOF3-161$$fPOF III$$x0
000863091 536__ $$0G:(EU-Grant)755171$$aGENIORS - GEN IV Integrated Oxide fuels recycling strategies (755171)$$c755171$$fNFRP-2016-2017-1$$x1
000863091 536__ $$0G:(EU-Grant)323282$$aSACSESS - Safety of ACtinide Separation proceSSes (323282)$$c323282$$fFP7-Fission-2012$$x2
000863091 7001_ $$0P:(DE-Juel1)130438$$aWilden, Andreas$$b1$$eCorresponding author$$ufzj
000863091 7001_ $$0P:(DE-HGF)0$$aMezyk, Stephen P.$$b2
000863091 7001_ $$0P:(DE-Juel1)142389$$aHupert, Michelle$$b3$$ufzj
000863091 7001_ $$0P:(DE-Juel1)133855$$aStärk, Andrea$$b4$$ufzj
000863091 7001_ $$0P:(DE-HGF)0$$aVerboom, Wim$$b5
000863091 7001_ $$0P:(DE-HGF)0$$aMincher, Bruce J.$$b6
000863091 7001_ $$0P:(DE-Juel1)130383$$aModolo, Giuseppe$$b7$$ufzj
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000863091 9141_ $$y2019
000863091 920__ $$lyes
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