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

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

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.

ION EXCHANGE OF SEVERAL RADIONUCLIDES ON THE HYDROUS CRYSTALLINE SILICOTITANATE, UOP IONSIV IE-911

1999 ◽  
Vol 34 (6-7) ◽  
pp. 1145-1166 ◽  
Author(s):  
M. E. Huckman ◽  
I. M. Latheef ◽  
R. G. Anthony
Keyword(s):  
Ion Exchange ◽  
Crystalline Silicotitanate

scholarly journals Dead-End Filtration and Crystalline Silicotitanate Cesium Ion Exchange with Hanford Tank Waste AW-102

2019 ◽  
Author(s):  
Amy M. Rovira ◽  
Sandra K. Fiskum ◽  
Jarrod R. Allred ◽  
John G. H. Geeting ◽  
Heather A. Colburn ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Cesium Ion ◽  
Dead End ◽  
Crystalline Silicotitanate ◽  
Tank Waste
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