Data · dataset · 2025
Study on cesium adsorption behavior of mineral colloid in surrounding rock of cavern disposal repository
Listed in ScienceDB
[Background]: The surrounding rock of the repository is the last barrier to block the migration of radionuclides, and there is a potential risk of co-migration of mineral colloid and nuclides in the fissure.
Description
[Purpose]: This study aims to investigate the main components of the surrounding rock mineral colloid and its adsorption mechanisms for Cs+, as well as to assess the co-migration risk of mineral colloid and Cs+. [Methods]: The chemical composition and microscopic images of SRM colloid were investigated by XRF, XRD, FT-IT, SEM and other characterization methods.
The adsorption performance of SRM colloid for Cs+ was investigated by adsorption experiment, and the influence of groundwater characteristics on the stability and adsorption performance of SRM colloid was investigated. [Results]: The main components of SRM colloids were silicate minerals. The results of adsorption experiments show that the saturated adsorption capacity of SRM colloid for Cs+ is 47.07 mg·g-1.
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Strong acid and high concentration of K+ and Ca2+ will reduce the stability of the colloid, and the adsorption of Cs+ by SRM colloid will decrease. In the alkaline environment, the colloid stability is improved, and the adsorption amount of SRM colloid for Cs+ is increased. Conclusions: Conclusions: Mg2+ can promote the adsorption of Cs+ by SRM colloid by changing the microstructure of SEM colloid.
[Conclusions]: Experimental results show that SRM colloid can carry Cs+ to co-migration, and can reduce the risk of co-migration by changing the pH of backfill materials.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.19608 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Geochemistry 69% · Image 65%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.19608 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3703 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (65%) |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |