Published December 2016
| Version v1
Journal article
Effect of dry density and pH on the diffusion behavior of lanthanum in compacted Chinese GMZ bentonite
- 1. Xiangtan University, Xiangtan (China). Hunan Key Laboratory of Geomechanics and Engineering Safety
- 2. Changsha University of Science and Technology, Changsha (China). School of Civil Engineering and Architecture
- 3. Tongji University, Shanghai (China). Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education and Department of Geotechnical Engineering
- 4. Laboratore Navier/CERMES, Ecole des Ponts-ParisTech, 77 - Marne-La-Vallee (France)
Description
Diffusion experiments in compacted GaoMiaoZi (GMZ) bentonite were performed with La(III) using the in-diffusion method, and the effects of dry density and pH were emphasized. The apparent diffusion coefficient (Da) was obtained at the end of the experiment. Da decreases with increasing dry density of 1.3-1.7 Mg m-3 as well as slightly decreases as pH increases from 3.6 to 8.9. The Da range is (2-16) × 10-12 m2 s−1 under the experimental conditions. The distribution coefficients (Kd) for La(III) in compacted GMZ bentonite are much smaller than those on powdered bentonite obtained from batch experiments. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 310
- Journal Issue
- 3
- Journal Page Range
- p. 1303-1310
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 47125913
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- BENTONITE; DENSITY; DIFFUSION; GEOCHEMISTRY; LANTHANUM; PH VALUE
- Descriptors DEC
- CHEMISTRY; CLAYS; ELEMENTS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; METALS; MINERALS; PHYSICAL PROPERTIES; RARE EARTHS; SILICATE MINERALS
Optional Information
- Notes
- 53 refs.