Preparation of Spherical PVA Hydrogels Bearing β-Cyclodextrin and Their Application for Immobilizing Microbes

Polyvinyl alcohol (PVA) spherical hydrogels can be used for the immobilization microbes for wastewater treatment and in bioreactors. In this study, we prepared PVA-bonded-β-cyclodextrin hydrogel beads which contained 10 to 110 µmol/g of β-cyclodextrin (βCyD) by reacting βCyD with PVA using formaldeh...

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Bibliographic Details
Published inKOBUNSHI RONBUNSHU Vol. 72; no. 10; pp. 606 - 616
Main Authors YAMASAKI, Hirohito, TOKUNAGA, Hikaru, FUKUNAGA, Kimitoshi
Format Journal Article
LanguageJapanese
Published The Society of Polymer Science, Japan 25.10.2015
Subjects
Microbe Immobilization Support
Polyvinyl Alcohol
Spherical Hydrogel
Wastewater Treatment
β-Cyclodextrin
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Summary:Polyvinyl alcohol (PVA) spherical hydrogels can be used for the immobilization microbes for wastewater treatment and in bioreactors. In this study, we prepared PVA-bonded-β-cyclodextrin hydrogel beads which contained 10 to 110 µmol/g of β-cyclodextrin (βCyD) by reacting βCyD with PVA using formaldehyde (80 g/L) at 80°C for 3 hours. Phenol-degrading bacteria were immobilized in the spherical hydrogel containing βCyD at 0, 10, 33, 41, and 74 µmol/g in a bubbling vessel. Batchwise phenol degradation tests were carried out with each immobilized biocatalysts in model wastewater containing initially 500 mg/L of phenol. The immobilized biocatalyst having the βCyD component in the hydrogels degraded phenol very effectively.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.2015-0024