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Dissolved and Colloidal Transport of Cesium in Natural Discrete Fractures
Tang, Xiang-Yu1,2; Weisbrod, Noam1
Corresponding AuthorWeisbrod, N
2010
Source PublicationJOURNAL OF ENVIRONMENTAL QUALITY
ISSN0047-2425
EISSN1537-2537
Volume39Issue:3Pages:1066-1076
SubtypeArticle
AbstractTransport of cesium (Cs) was investigated in a saturated natural chalk fracture with an average equivalent hydraulic aperture of 129 mu m. The results show that Cs (inflow concentration of 0.22 mmol L(-1)) can be transported in its dissolved form and in association with montmorillonite Humic acid (HA) did not sorb Cs bur enhanced colloid-associated Cs transport by 12 5% in terms of breakthrough curve (BTC) recovery The BTCs clearly showed desorption of Cs from the fracture walls during the artificial rainwater (ARW)-injection period. Cesium transport associated with montmorillonite colloids was significant, with a maximum colloid-associated Cs C/C(0) (outflow-to-inflow concentration ratio) value of 16 6 +/- 1.1% during the tracer (colloids and LiBr)-injection period However, the relative contribution of colloid-associated Cs transport to total Cs transport was relatively low, amounting to 10 3 +/- 7% and 14 5 +/- 7% with montmorillonite (500 mg L(-1)) and the montmorillonite-HA (10 mg L(-1)) mixture, respectively Readsorption of Cs onto the colloids occurred immediately on switching from the tracer suspension to the background solution of AIM The significant colloid-associated Cs transport. the stripping effect of Cs from colloids. and the slow desorption of Cs from fracture walls reported in this study have important implications for risk assessments of Cs mobility in fractured carbonatic rocks
KeywordLaboratory Migration Experiments Grimsel Test-site Facilitated Transport Humic-acid Bentonite Colloids Radionuclide Migration Sorption-desorption Hanford Sediments Granite Fracture Ionic-strength
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.2134/jeq2009.0345
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordLABORATORY MIGRATION EXPERIMENTS ; GRIMSEL TEST-SITE ; FACILITATED TRANSPORT ; HUMIC-ACID ; BENTONITE COLLOIDS ; RADIONUCLIDE MIGRATION ; SORPTION-DESORPTION ; HANFORD SEDIMENTS ; GRANITE FRACTURE ; IONIC-STRENGTH
Language英语
Quartile3区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000277129100031
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5598
Collection山地表生过程与生态调控重点实验室
Affiliation1.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, IL-84990 Sede Boqer, Israel
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Tang, Xiang-Yu,Weisbrod, Noam. Dissolved and Colloidal Transport of Cesium in Natural Discrete Fractures[J]. JOURNAL OF ENVIRONMENTAL QUALITY,2010,39(3):1066-1076.
APA Tang, Xiang-Yu,&Weisbrod, Noam.(2010).Dissolved and Colloidal Transport of Cesium in Natural Discrete Fractures.JOURNAL OF ENVIRONMENTAL QUALITY,39(3),1066-1076.
MLA Tang, Xiang-Yu,et al."Dissolved and Colloidal Transport of Cesium in Natural Discrete Fractures".JOURNAL OF ENVIRONMENTAL QUALITY 39.3(2010):1066-1076.
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