Effect of dry density pH on the diffusion behavior of lanthanum in compacted Chinese GMZ bentonite - École des Ponts ParisTech Access content directly
Journal Articles Journal of Radioanalytical Nuclear Chemistry Year : 2016

Effect of dry density pH on the diffusion behavior of lanthanum in compacted Chinese GMZ bentonite

Lihui Niu
  • Function : Author
Yu-Jun Cui

Abstract

Diffusion experiments in compacted GaoMiaoZi (GMZ) bentonite were performed with La(III) using the in-diffusion method, the effects of dry density pH were emphasized. The apparent diffusion coefficient (D (a)) was obtained at the end of the experiment. D (a) 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 D (a) range is (2-16) x 10(-12) m(2) s(-1) under the experimental conditions. The distribution coefficients (K (d)) for La(III) in compacted GMZ bentonite are much smaller than those on powdered bentonite obtained from batch experiments.
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Dates and versions

hal-01573707 , version 1 (10-08-2017)

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Cite

Yong-Gui Chen, Ling-Yan Jia, Lihui Niu, Wei-Min Ye, Bao Chen, et al.. Effect of dry density pH on the diffusion behavior of lanthanum in compacted Chinese GMZ bentonite. Journal of Radioanalytical Nuclear Chemistry, 2016, 310 (3), pp.1303-1310. ⟨10.1007/s10967-016-4972-5⟩. ⟨hal-01573707⟩
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