Sodium, rubidium and cesium ions adsorption by Prussian blue(PB)

DOI

10.2991/icache-16.2016.51How to use a DOI?

Keywords

Sodium, Rubidium; Cesium, Prussian blue, Adsorption

Abstract

The adsorption of alkali metal ions onto prepared Prussian blue (PB) was investigated in single-element solutions. The released quantities of K+ constitutive of PB were measured in course of adsorption time. Acidification occurred in these solutions because of decrease in pH values after adsorption. The PB was examined by Energy dispersive spectroscopy (EDS) technique. The results showed that the equilibrium adsorption capacities was in the sequence Cs+ > Rb+ > Na+. The mechanisms for the adsorption of Na+, Rb+ and Cs+ onto PB were deduced comprehensively as ion exchange with K+ and trapping through H+. The selectivity sequence was Rb+ > Cs+ Na+ for ion exchange with K+ because of the ionic radius of Rb+ similar to that of K+. The adsorption mechanism was dependent of ion trapping through H+ leading to the sequence of Cs+ > Rb+ > Na+ owing to the size of their hydrated radius.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tan Guo
AU  - Shan Yun
AU  - Huaju Li
AU  - Xiufang Zhu
AU  - Xiaoyan Gao
PY  - 2016/11
DA  - 2016/11
TI  - Sodium, rubidium and cesium ions adsorption by Prussian blue(PB)
BT  - Proceedings of the 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)
PB  - Atlantis Press
SP  - 272
EP  - 275
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-16.2016.51
DO  - 10.2991/icache-16.2016.51
ID  - Guo2016/11
ER  -