DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Hye-Ryun | - |
dc.contributor.author | Cho, Sangki | - |
dc.contributor.author | Kim, Jueun | - |
dc.contributor.author | Han, Sangsoo | - |
dc.contributor.author | Kim, Hee-Kyung | - |
dc.contributor.author | Um, Wooyong | - |
dc.date.accessioned | 2024-03-04T08:22:24Z | - |
dc.date.available | 2024-03-04T08:22:24Z | - |
dc.date.created | 2024-02-29 | - |
dc.date.issued | 2023-04 | - |
dc.identifier.issn | 2813-3412 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/120768 | - |
dc.description.abstract | <jats:p>PuO<jats:sub>2</jats:sub>(cr) dissolution in natural water was investigated at 25°C and 60°C under atmospheric conditions. The concentration of Pu in solutions [Pu], was monitored for 1 year of reaction time. PuO<jats:sub>2</jats:sub>(cr) dissolution in natural water reached a steady state within 2 months at 25°C. The [Pu] in groundwater and seawater at pH 8 were in the range of [Pu] = 0.9–34 and 3.4–27 nM, respectively. The [Pu] in concrete porewater (rainwater equilibrated with concrete) at pH 8.1–10.9 was in the range of 0.1–3.2 nM. The [Pu] and pH values of groundwater were similar to those of seawater samples having a high ionic strength. The measured [Pu] at equilibrium in all samples was higher than the calculated solubility curves for PuO<jats:sub>2</jats:sub>(am, hyd). Experimental evidence is insufficient to confirm the oxidation state of Pu in solution and solid phases. However, the results of geochemical modeling indicate that PuO<jats:sub>2</jats:sub>(am, hyd) and aqueous Pu(IV) species are dominant in natural water samples of this work. The dissolution behavior of PuO<jats:sub>2</jats:sub>(cr) in natural waters is comparable to the oxidative dissolution of PuO<jats:sub>2</jats:sub>(am, hyd) in the presence of PuO<jats:sub>2</jats:sub>(coll, hyd). The dissolution of PuO<jats:sub>2</jats:sub> in groundwater decreased at higher temperatures, whereas the influence of temperature in seawater and porewater was not significant under these experimental conditions.</jats:p> | - |
dc.language | English | - |
dc.publisher | Frontiers Media S.A. | - |
dc.relation.isPartOf | Frontiers in Nuclear Engineering | - |
dc.title | Dissolution behaviors of PuO2(cr) in natural waters | - |
dc.type | Article | - |
dc.identifier.doi | 10.3389/fnuen.2023.1118594 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Frontiers in Nuclear Engineering, v.2 | - |
dc.citation.title | Frontiers in Nuclear Engineering | - |
dc.citation.volume | 2 | - |
dc.contributor.affiliatedAuthor | Um, Wooyong | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | other | - |
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