Staff View
Wet-chemical synthesis of apatite-based ceramic waste forms for the immobilization of radioactive iodine (i-129)

Descriptive

TitleInfo
Title
Wet-chemical synthesis of apatite-based ceramic waste forms for the immobilization of radioactive iodine (i-129)
Name (type = personal)
NamePart (type = family)
Cao
NamePart (type = given)
Charles En Hua
NamePart (type = date)
1989-
DisplayForm
Charles En Hua Cao
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Goel
NamePart (type = given)
Ashutosh
DisplayForm
Ashutosh Goel
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Klein
NamePart (type = given)
Lisa
DisplayForm
Lisa Klein
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Birnie
NamePart (type = given)
Dunbar
DisplayForm
Dunbar Birnie
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2017
DateOther (qualifier = exact); (type = degree)
2017-01
CopyrightDate (encoding = w3cdtf); (qualifier = exact)
2017
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
One of the key components to a feasible and sustainable nuclear fuel cycle is a viable set of waste forms for the radionuclides and fission products. Of particular concern are the highly volatile radionuclides such as iodine – 129. The current proposed technology for the removal of iodine from reprocessing plant off-gas is to pass it through a bed of silver solid sorbents (i.e. silver zeolite) to form chemisorbed AgI and/or bubble the off-gas into a caustic solution. At this point in time, this iodine capture media is being stored on waste treatment facilities awaiting a viable waste form solution for storage into a geological repository. Iodine is not amenable to conventional borosilicate vitrification routes because of its low solubility in some glass chemistries and, more importantly, its high volatility at typical glass processing temperatures (1000 - 1100°C). Therefore, considerable effort is being made to develop alternative waste forms for iodine. However, most proposed waste forms to date have not achieved sufficient maturity and satisfactory properties (specifically: ease of processing, high waste loading, and high chemical durability) to be considered as promising technologies. Apatite-based ceramic waste forms have been considered as potential candidates for immobilization of radioactive iodine for a long time. In particular, lead vanadate based apatite minerals [i.e. Pb10(VO4)6I2] have been suggested as promising waste forms in this regard mainly due to their ability to accommodate iodine in their crystal structure. Although promising, the major challenges associated with these minerals are either high processing temperatures along with complicated synthesis routes or poor chemical durability. While the concerns pertaining to poor chemical durability of these minerals have been addressed by partial substitution of vanadate (VO4)3- by phosphate (PO4)3- ions [Pb10(VO4)6-x(PO4)xI2], as investigated in literature, the high processing temperatures and complicated synthesis routes of these minerals still pose a big challenge for the continuous mass production of these waste forms. In this study, we present the first reported instance of wet-chemical synthesis of the well-known apatite, Pb10(VO4)6I2. By being able to utilize wet-chemical synthesis, the ability to scale up the production of an iodine-containing apatite to an industrial level is made possible and thus the vast amount of iodine waste media being stored on nuclear waste treatment facilities internationally can be addressed. Several factors paramount to the successful synthesis of the material will be presented, including the choice of precursors, order of synthesis steps, pH level, and temperature of the solution. Aside from this, solid solutions studies will be presented substituting calcium for lead and phosphate for vanadate. These studies help set a baseline for future apatite compositional studies, so that its characteristics can be optimized for the application of geological repositories with the use of our wet-chemical synthesis method.
Subject (authority = RUETD)
Topic
Materials Science and Engineering
Subject (authority = ETD-LCSH)
Topic
Apatite
Subject (authority = ETD-LCSH)
Topic
Iodine--Isotopes
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_7798
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xii, 38 p. : ill.)
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Charles En Hua Cao
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T3CF9SJ3
Back to the top

Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Cao
GivenName
Charles
MiddleName
En Hua
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2016-12-22 15:23:57
AssociatedEntity
Name
Charles Cao
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2017-01-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2018-01-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 31st, 2018.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
Back to the top

Technical

RULTechMD (ID = TECHNICAL1)
ContentModel
ETD
OperatingSystem (VERSION = 5.1)
windows xp
CreatingApplication
Version
1.4
DateCreated (point = start); (encoding = w3cdtf); (qualifier = exact)
2016-12-22T15:07:15
DateCreated (point = start); (encoding = w3cdtf); (qualifier = exact)
2016-12-22T15:07:09
ApplicationName
Adobe PDF Library 11.0
Back to the top
Version 8.3.13
Rutgers University Libraries - Copyright ©2020