The influence of pH and temperature on the aqueous geochemistry of neodymium in near surface conditions

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dc.contributor.authorCetiner, Ziya S.
dc.date.accessioned2025-01-27T20:54:16Z
dc.date.available2025-01-27T20:54:16Z
dc.date.issued2009
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractGeochemical calculations were employed for the solubility and speciation of neodymium in a model soil solution as a function of pH. The calculations were based on the recently determined stability constants for Nd and solubility product for the Nd end-member of mineral monazite (NdPO4). Simulations were carried out at near neutral pH (pH 6.0 to pH 7.5) and 25A degrees C at the atmospheric CO2 partial pressure. Additional calculations were also performed to assess Nd mobility at the extreme temperature conditions (300A degrees C) at neutral pH. Our results suggest that relatively dilute (Ionic Strength, I = 0.1), low-temperature waters may transport very small quantities of rare earth elements and actinides to the surficial environment at near neutral pH conditions. Evidently, higher temperature or extreme fluid composition may have a greater potential for mobilization of these elements. The results are pertinent to researchers interested in engineering applications for the precipitation of Nd and surrogate actinides from aqueous nuclear wastes.
dc.description.sponsorshipNational Science Foundation [EAR-9705661]
dc.description.sponsorshipThis study was supported in part by grant EAR-9705661 from the National Science Foundation.
dc.identifier.doi10.1007/s10661-008-0269-7
dc.identifier.endpage287
dc.identifier.issn0167-6369
dc.identifier.issn1573-2959
dc.identifier.issue1-4
dc.identifier.pmid18463986
dc.identifier.scopus2-s2.0-62149140100
dc.identifier.scopusqualityQ2
dc.identifier.startpage279
dc.identifier.urihttps://doi.org/10.1007/s10661-008-0269-7
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26026
dc.identifier.volume151
dc.identifier.wosWOS:000263832800026
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofEnvironmental Monitoring and Assessment
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectRare earth elements
dc.subjectREE
dc.subjectNeodymium
dc.subjectActinides
dc.subjectMonazite
dc.subjectSolubility
dc.subjectSpeciation
dc.titleThe influence of pH and temperature on the aqueous geochemistry of neodymium in near surface conditions
dc.typeArticle

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