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Iodosodalite Waste Forms from Low-Temperature Aqueous Process

Published online by Cambridge University Press:  26 February 2018

Junghune Nam ,
Saehwa Chong ,
Brian J. Riley  and
John S. McCloy
Junghune Nam
Affiliation:
School of Mechanical & Materials Engineering, Washington State University, Pullman, WA 99164, USA
Saehwa Chong
Affiliation:
Materials Science and Engineering Program, Washington State University, Pullman, WA 99164, USA
Brian J. Riley
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
John S. McCloy*
Affiliation:
School of Mechanical & Materials Engineering, Washington State University, Pullman, WA 99164, USA Materials Science and Engineering Program, Washington State University, Pullman, WA 99164, USA Pacific Northwest National Laboratory, Richland, WA 99352, USA
*
*(Email: john.mccloy@wsu.edu)
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Abstract

Nuclear energy is one option to meet rising electricity demands, although one concern of this technology is the proper capture and storage of radioisotopes produced during fission processes. One of the more difficult radioisotopes is 129 I due to its volatility and poor solubility in traditional waste forms such as borosilicate glass. Iodosodalite has been previously proposed as a viable candidate to immobilize iodine due to high iodine loading and good chemical durability. Iodosodalite was traditionally synthesized using solid state and hydrothermal techniques, but this paper discusses an aqueous synthesis approach to optimize and maximize the iodosodalite yield. Products were pressed into pellets and fired with glass binders. Chemical durability and iodine retention results are included.

Keywords

Inuclear materialsx-ray diffraction (XRD)chemical synthesissintering
Type
Articles
Information
MRS Advances , Volume 3 , Issue 20: Scientific Basis for Nuclear Waste Management XLI , 2018 , pp. 1093 - 1103
Copyright
Copyright © Materials Research Society 2018 

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