Interpretation of the interaction between cesium ion and some clay minerals based on their structural features

Yasuhiro Akemoto; Satya Candra Wibawa Sakti; Masahiko Kan; Shunitz Tanaka

doi:10.1007/s11356-020-11476-7

Interpretation of the interaction between cesium ion and some clay minerals based on their structural features

Environ Sci Pollut Res Int. 2021 Mar;28(11):14121-14130. doi: 10.1007/s11356-020-11476-7. Epub 2020 Nov 18.

Authors

Yasuhiro Akemoto^{1

2}, Satya Candra Wibawa Sakti^{3

4

5}, Masahiko Kan⁶, Shunitz Tanaka^{7

8

9}

Affiliations

¹ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita-ku, Sapporo, 060-0810, Japan. akemoto-yasuhiro@hro.or.jp.
² Research Institute of Energy, Environment and Geology, Industrial Technology and Environment Research Department, Hokkaido Research Organization, Kita 19 Nishi 11, Kita-ku, Sapporo, 060-0819, Japan. akemoto-yasuhiro@hro.or.jp.
³ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita-ku, Sapporo, 060-0810, Japan.
⁴ Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, 60115, Indonesia.
⁵ Supramodification Nano-Micro Engineering Research Group, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, 60115, Indonesia.
⁶ Environmental Information Measurement Sciences, Hokkaido University of Education Sapporo, Ainosato 5-3, Kita-ku, Sapporo, 002-8502, Japan.
⁷ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita-ku, Sapporo, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁸ Faculty of Environmental Earth Science, Hokkaido University, Kita 10 Nishi 5, Kita-ku, Sapporo, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁹ ES General Laboratory Co., Nakanuma Nishi 5-1-8-1, Higashi-ku, Sapporo, Hokkaido, 007-0895, Japan. shunitz@ees.hokudai.ac.jp.

PMID: 33210248
DOI: 10.1007/s11356-020-11476-7

Abstract

Cesium (Cs⁺) is known to have a strong interaction with various clay minerals; however, it is not interpreted from the structure of clay minerals and the adsorption isotherm. The adsorption interactions between Cs⁺ and hydrobiotite (H-Bio), biotite (Bio), vermiculite (Verm), and exfoliated vermiculite (E-Verm) were evaluated by analyzing adsorption isotherm, basal spacing, and adsorption/desorption experiments. The Cs⁺ adsorption of H-Bio and Verm fitted well to the Langmuir adsorption isotherm, while the Cs⁺ adsorption of Bio and E-Verm fitted well to the Freundlich adsorption isotherm. The basal spacing of H-Bio and Verm was approximately 1.4 nm, while Bio and E-Verm basal spacing was 1.0 nm. The adsorption experiment results for Cs⁺ under the coexistence of Ca²⁺ and K⁺ indicated that the contribution of the interlayer sites to Cs⁺ adsorption on H-Bio and Verm was 25-40%, while the contribution of the interlayer sites to that on Bio and E-Verm was almost 0%. The adsorption isotherms reflected this interlayer contribution to Cs⁺ adsorption, which was dependent on the basal spacing. Therefore, the basal spacing of clay minerals is one of the key structural properties controlling both the adsorption capacity and the adsorption mechanism of Cs⁺ in clay minerals.

Keywords: Adsorption isotherm; Basal spacing; Biotite; Cesium; Interlayer; Vermiculite; Weathering.

MeSH terms

Adsorption
Aluminum Silicates*
Cesium*
Clay
Minerals

Substances

Aluminum Silicates
Minerals
Cesium
Clay