scholarly journals Crystalline Silicotitanate (CST) Ion Exchange Media Performance Evaluations in SRS Average Supernate Simulant and Tank 10H Waste Solution to Support TCCR

2018 ◽  
Author(s):  
William D. King ◽  
Larry L. Hamm ◽  
Charles J. Coleman ◽  
Fernando F. Fondeur ◽  
Scott H. Reboul
Keyword(s):  
Ion Exchange ◽  
Performance Evaluations ◽  
Waste Solution ◽  
Crystalline Silicotitanate ◽  
Media Performance

scholarly journals Ion Exchange Processing of AP-105 Hanford Tank Waste through Crystalline Silicotitanate in a Staged 2- then 3-Column System

2021 ◽  
Author(s):  
Sandra Fiskum ◽  
Amy Westesen ◽  
Andrew Carney ◽  
Truc LT Trang-Le ◽  
Reid Peterson
Keyword(s):  
Ion Exchange ◽  
Column System ◽  
Crystalline Silicotitanate ◽  
Tank Waste

Ion Exchange of Selected Group II Metals and Lead by Crystalline Silicotitanate and Competition for Cs Exchange Sites

2020 ◽  
Vol 39 (1) ◽  
pp. 90-103
Author(s):  
Emily L. Campbell ◽  
Sandra K. Fiskum ◽  
Truc T. Trang-Le ◽  
Reid A. Peterson
Keyword(s):  
Ion Exchange ◽  
Crystalline Silicotitanate ◽  
Group Ii

Ion exchange studies for the removal of plutonium and americium from organic liquid scintillator waste solution

2006 ◽  
Vol 94 (12) ◽  
Author(s):  
K. V. Chetty ◽  
R. Swarup ◽  
V. Venugopal ◽  
P. R. Vasudeva Rao
Keyword(s):  
Ion Exchange ◽  
Radioactive Waste ◽  
Liquid Scintillator ◽  
Organic Liquid ◽  
Phosphinic Acid ◽  
Alpha Activity ◽  
Waste Solution ◽  
Radioactive Nuclides ◽  
Active Waste ◽  
Batch Data

Removal of radioactive nuclides from effluents is important for the safe disposal of the radioactive waste. In the present work ion exchange studies were carried out using simulated alpha active organic liquid scintillator and ethyl alcohol waste solutions containing Pu and Am using different resins. The time of equilibration and batch data were obtained under different conditions for individual resins as well as their mixtures. The indigenously developed Macroporous bifunctional phosphinic acid (MPBPA) resin was found to be suitable for the removal of alpha activity mainly due to Pu and Amberlite IR-120 and Biorad 50W × 8 for removal of Am. The results indicated that the presence of alcohol in the scintillator solution helps in increasing the distribution ratio. Experiments were carried out with column containing either MPBPA resin alone or with additional resin bed of Amberlite IR-120 using active organic liquid scintillator waste (with and without dilution with alcohol). Studies were also carried out on alcoholic waste generated in the laboratory during the washing of the used liquid scintillator vials. The alcohol after removal of activity either could be reused or could be disposed off directly as a ‘potentially’ active waste.

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

2005 ◽  
Vol 93 (8) ◽  
Author(s):  
Kofi Adu-Wusu ◽  
Neguib M. Hassan ◽  
Charles A. Nash ◽  
James C. Marra
Keyword(s):  
Ion Exchange ◽  
Waste Solution ◽  
Exchange Study ◽  
Alkaline Waste

SummaryBatch ion exchange tests have been employed to evaluate the ability of SuperLig® 644 resin to remove

New Crystalline Silicotitanate (CST) Waste Forms: Hydrothermal Synthesis and Characterization of CS-SI-TI-O Phases

1999 ◽  
Vol 556 ◽  
Author(s):  
M. Nyman ◽  
T. M. Nenoff ◽  
Y. Su ◽  
M. L. Balmer ◽  
A. Navrotsky ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Hydrothermal Synthesis ◽  
Ion Exchange ◽  
Borosilicate Glass ◽  
Waste Form ◽  
Synthesis And Characterization ◽  
Hanford Site ◽  
Waste Forms ◽  
Crystalline Silicotitanate

AbstractThe radioactivity of the Hanford site waste tanks is primarily from 137Cs and 90Sr, of which can both be selectively removed from solution using a crystalline silicotitanate (CST) ion exchanger. We are currently seeking waste forms alternative to borosilicate glass for Cs-CSTs. In order to obtain a fundamental basis for the development of an alternative waste form, we are investigating synthesis and characterization of CST component phases, namely Cs-Si-Ti-O phases. Two novel Cs-Ti-Si-O phases (one porous, one condensed) have been hydrothermally synthesized, characterized and evaluated as waste form candidates based on chemical and thermal stability, leachability, and ion exchange capabilities.

Sign in / Sign up

Export Citation Format

Share Document