Volume 42, Issue 4 pp. 910-917
Research Article

Isothermal Adsorption Behavior of Cesium Ions in a Novel Chitosan-Prussian Blue-Based Membrane

Tomoyuki Fujisaki

Tomoyuki Fujisaki

National Institute of Technology, Oyama College, Department of Materials Chemistry and Bioengineering, 771 Ohaza-Nakakuki, 323-0806 Oyama, Tochigi, Japan

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Keita Kashima

Corresponding Author

Keita Kashima

National Institute of Technology, Oyama College, Department of Materials Chemistry and Bioengineering, 771 Ohaza-Nakakuki, 323-0806 Oyama, Tochigi, Japan

Correspondence: Keita Kashima ([email protected]), National Institute of Technology, Oyama College, Department of Materials Chemistry and Bioengineering, 771 Ohaza-Nakakuki, Oyama, Tochigi, 323-0806, Japan.Search for more papers by this author
Masahide Hagiri

Masahide Hagiri

National Institute of Technology, Fukushima College, Department of Applied Chemistry and Biochemistry, 30 Nagao, Kamiarakawa, Taira, Iwaki, 970-8034 Fukushima, Japan

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Masanao Imai

Masanao Imai

Nihon University, Graduate School of Bioresource Sciences, 1866, Kameino, Fujisawa, 252-0880 Kanagawa, Japan

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First published: 13 February 2019
Citations: 20

Abstract

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 (MFPB) assisted the improvement of the initial adsorption rate as well as the adsorption uptake of cesium ions. A high MFPB 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 MFPB.

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