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Isothermal Adsorption Behavior of Cesium Ions in a Novel Chitosan‐Prussian Blue‐Based Membrane
Author(s) -
Fujisaki Tomoyuki,
Kashima Keita,
Hagiri Masahide,
Imai Masanao
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201800603
Subject(s) - adsorption , prussian blue , membrane , langmuir adsorption model , isothermal process , chemistry , langmuir , caesium , chitosan , diffusion , ion , inorganic chemistry , electrochemistry , organic chemistry , electrode , thermodynamics , biochemistry , physics
Prussian blue (PB) particles were successfully immobilized on a novel chitosan membrane. Morphological observations confirmed that the PB particles were densely immobilized within the membrane. From isothermal adsorption analysis, an increase in the mass fraction of PB contained within the membrane ( MF PB ) assisted the improvement of the initial adsorption rate as well as the adsorption uptake of cesium ions. A high MF PB led to a decrease in the effective diffusion coefficient of cesium ions in the membrane. Adsorption equilibrium data were found in good agreement with the Langmuir model. The maximum adsorption capacity of the membrane immobilizing PB as well as the adsorption constant in the Langmuir model increased with higher MF PB .