Show simple item record

dc.contributor.authorProdromou, Melpomenien
dc.contributor.authorAntoniou, Stellaen
dc.contributor.authorPashalidis, Ioannisen
dc.creatorProdromou, Melpomenien
dc.creatorAntoniou, Stellaen
dc.creatorPashalidis, Ioannisen
dc.date.accessioned2019-11-21T06:22:28Z
dc.date.available2019-11-21T06:22:28Z
dc.date.issued2014
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/56056
dc.description.abstractThe solution chemistry of actinides, particularly hydrolysis, is of major importance in the design of nuclear waste repositories and in relation to nuclear fuel reprocessing cycles. In this study the formation and solubility of the Th(OH)4 solid phase has been investigated as a function of the aging time and the presence of natural organic matter (e.g. humic acid) in 0.1 M NaClO4, at weak acid pH and under normal atmospheric conditions. Th(OH)4 has been prepared by alkaline precipitation and characterized by TGA, ATR-FTIR, XRD, and solubility measurements. According to the experimental data Th(OH)4 is stable and remains the solubility limiting solid phase even in the presence of increased humic acid concentration in solution. Increasing humic acid concentration doesn't affect the crystallite size and the solubility product of Th(OH)4. Th(OH)4 solubility is basically pH depended and governed by the presence of colloidal species. However, solid phase aging, which in absence of humic acid favors crystallinity, affects significantly the Th(OH)4 solubility. © 2013 Akadémiai Kiadó, Budapest, Hungary.en
dc.sourceJournal of Radioanalytical and Nuclear Chemistryen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84892820163&doi=10.1007%2fs10967-013-2693-6&partnerID=40&md5=1c7ead3756ccac8876ba572cc7a684c1
dc.subjectarticleen
dc.subjectcontrolled studyen
dc.subjectAgingen
dc.subjectSolubilityen
dc.subjectcrystallizationen
dc.subjectX ray diffractionen
dc.subjectconcentration (parameters)en
dc.subjectParticle sizeen
dc.subjectcomplex formationen
dc.subjectinfrared spectroscopyen
dc.subjectpHen
dc.subjectthermogravimetryen
dc.subjectsoliden
dc.subjectTh(IV)en
dc.subjectthoriumen
dc.subjectphysical chemistryen
dc.subjectHumic aciden
dc.subjecthydrophilicityen
dc.subjectphysical parametersen
dc.subjectchemical phenomenaen
dc.subjectatmospheric pressureen
dc.subjectsolid phase agingen
dc.titleThe effect of aging and natural organic matter on the Th(OH)4 solubilityen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1007/s10967-013-2693-6
dc.description.volume299
dc.description.issue1
dc.description.startingpage695
dc.description.endingpage698
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Χημείας / Department of Chemistry
dc.type.uhtypeArticleen
dc.source.abbreviationJ.Radioanal.Nucl.Chem.en
dc.contributor.orcidPashalidis, Ioannis [0000-0002-7587-6395]
dc.gnosis.orcid0000-0002-7587-6395


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record