Determination of 89sr and 90sr from Low-and Intermediate-Level Radioactive Liquid Waste

2000 ◽  
pp. 145-150
Author(s):  
Á. Vincze ◽  
J. Solymosi ◽  
P. Ormai ◽  
G. Volent
Keyword(s):  
Liquid Waste ◽  
Intermediate Level ◽  
Radioactive Liquid Waste

Treatment of106Ru Present In Intermediate Level Radioactive Liquid Waste With Nickel Sulphide

2009 ◽  
Vol 44 (2) ◽  
pp. 506-515 ◽  
Author(s):  
N. L. Sonar ◽  
P. K. Mishra ◽  
S. G. Kore ◽  
M. S. Sonavane ◽  
Y. Kulkarni ◽  
...  
Keyword(s):  
Liquid Waste ◽  
Intermediate Level ◽  
Nickel Sulphide ◽  
Radioactive Liquid Waste

scholarly journals Determination of reaction kinetics during vitrification of radioactive liquid waste for different types of base glass

2019 ◽  
Vol 51 (3) ◽  
pp. 746-754 ◽  
Author(s):  
G. Suneel ◽  
S. Rajasekaran ◽  
J. Selvakumar ◽  
Chetan P. Kaushik ◽  
J.K. Gayen ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Liquid Waste ◽  
Radioactive Liquid Waste ◽  
Base Glass ◽  
Different Types

Radiation Effects on Hollandite Ceramics developed for Radioactive Cesium Immobilization

2003 ◽  
Vol 792 ◽  
Author(s):  
V. Aubin ◽  
D. Caurant ◽  
D. Gourier ◽  
N. Baffier ◽  
S. Esnouf ◽  
...  
Keyword(s):  
Radiation Effects ◽  
Liquid Waste ◽  
Fission Products ◽  
Radioactive Cesium ◽  
Radioactive Liquid Waste ◽  
Epr Spectrum ◽  
Paramagnetic Resonance ◽  
Γ Radiation ◽  
The Stability ◽  
High Level

ABSTRACTProgress on separating the long-lived fission products from the high level radioactive liquid waste (HLW) has led to the development of specific host matrices, notably for the immobilization of cesium. Hollandite (nominally BaAl2Ti6O16), one of the main phases constituting Synroc, receives renewed interest as specific Cs-host wasteform. The radioactive cesium isotopes consist of short-lived Cs and Cs of high activities and Cs with long lifetime, all decaying according to Cs+→Ba2++e- (β) + γ. Therefore, Cs-host forms must be both heat and (β,γ)-radiation resistant. The purpose of this study is to estimate the stability of single phase hollandite under external β and γ radiation, simulating the decay of Cs. A hollandite ceramic of simple composition (Ba1.16Al2.32Ti5.68O16) was essentially irradiated by 1 and 2.5 MeV electrons with different fluences to simulate the β particles emitted by cesium. The generation of point defects was then followed by Electron Paramagnetic Resonance (EPR). All these electron irradiations generated defects of the same nature (oxygen centers and Ti3+ ions) but in different proportions varying with electron energy and fluence. The annealing of irradiated samples lead to the disappearance of the latter defects but gave rise to two other types of defects (aggregates of light elements and titanyl ions). It is necessary to heat at relatively high temperature (T=800°C) to recover an EPR spectrum similar to that of the pristine material. The stability of hollandite phase under radioactive cesium irradiation during the waste storage is discussed.

Studies on hydrolysis and radiolysis of N,N,N′,N′-tetraoctyl-3-oxapentane-1,5-diamide

2002 ◽  
Vol 90 (3) ◽  
Author(s):  
Y. Sugo ◽  
Y. Sasaki ◽  
S. Tachimori
Keyword(s):  
Gamma Irradiation ◽  
Room Temperature ◽  
Degradation Products ◽  
Liquid Waste ◽  
Amide Bond ◽  
Radioactive Liquid Waste ◽  
Ether Bond ◽  
Nuclear Fuel Reprocessing ◽  
High Level ◽  
Fuel Reprocessing

SummaryHydrolytic and radiolytic stabilities of a promising extractant, N,N,N′,N′-tetraoctyl-3-oxapentane-1,5-diamide (TODGA), for actinides in high-level radioactive liquid waste from nuclear fuel reprocessing were investigated in air at room temperature. Hydrolysis by nitric acid was not observed, whereas radiolysis by gamma irradiation was notably observed. The radiolysis study showed that an amide-bond, an ether-bond, and a bond adjacent to the ether-bond tended to be broken by gamma irradiation, and dioctylamine and various N,N-dioctylmonoamides were identified as the main degradation products by GC/MS and NMR analyses. The

Separation and determination of 90Sr in low- and intermediate-level radioactive wastes using extraction chromatography and LSC

2011 ◽  
Vol 290 (3) ◽  
pp. 631-635 ◽  
Author(s):  
Eliane S. C. Temba ◽  
Aluísio S. Reis Júnior ◽  
Ângela Maria Amaral ◽  
Roberto P. G. Monteiro
Keyword(s):  
Extraction Chromatography ◽  
Radioactive Wastes ◽  
Intermediate Level
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