Modification of Copper (II) Ion-exchange Properties of Freestanding Alginate Membrane by Embedding with Zeolite

Insolubilized alginate membranes were obtained by crosslinking alginate with calcium ions, and alginate membranes embedded with zeolite in order to improve their ion exchange capacities were also successfully prepared. The alginate membranes were ion exchangeable due to the release of crosslinking i...

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Bibliographic Details
Published in:MATEC Web of Conferences 2021, Vol.333, p.4009
Main Authors: Hagiri, Masahide, Watanabe, Ryuya, Hiruta, Ami, Kashima, Keita
Format: Article
Language:English
Subjects:
Alginates
Beads
Calcium ions
Copper
Crosslinking
Embedding
Hydrogels
Ion exchange
Membranes
Zeolites
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Summary:Insolubilized alginate membranes were obtained by crosslinking alginate with calcium ions, and alginate membranes embedded with zeolite in order to improve their ion exchange capacities were also successfully prepared. The alginate membranes were ion exchangeable due to the release of crosslinking ions, and showed an ion exchange capability for copper (II) ions that was comparable to that for alginate hydrogel beads. Additionally, while both the insolubilized alginate membranes and the zeolite-embedded membrane exhibited ion-exchange abilities, additional ion-exchange capacities was imparted by embedding zeolite in the latter. However, it was also found that embedding partially inhibits the ion-exchange capacities of the zeolite contained therein.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/202133304009