Preparation of Spherical Photo-Crosslinkable Hydrogels Having β-Cyclodextrin Powdery Polymer and their Application as Immobilizing Support for Microbes

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  • YAMASAKI Hirohito
    Department of Chemical & Biological Engineering, Ube National College of Technology
  • NAGASAWA Yasuyuki
    Department of Chemical & Biological Engineering, Ube National College of Technology
  • UCHIDA Narumi
    Department of Chemical & Biological Engineering, Ube National College of Technology
  • FUKUNAGA Kimitoshi
    Department of Sustainable Engineering (Chemistry), Graduate School of Science and Engineering, Yamaguchi University

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Other Title
  • β-シクロデキストリン架橋物をブレンドした光硬化型球状含水ゲルの調製と微生物固定化担体としての応用
  • v-シクロデキストリン カケハシブツ オ ブレンド シタ ヒカリ コウカガタ キュウジョウ ガンスイ ゲル ノ チョウセイ ト ビセイブツ コテイカタンタイ ト シテ ノ オウヨウ
  • Preparation of Spherical Photo-Crosslinkable Hydrogels Having ^|^beta;-Cyclodextrin Powdery Polymer and their Application as Immobilizing Support for Microbes

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Abstract

In recent years, the development of reformative technology to remove aromatic pollutants from industrial wastewater is attempted. We have carried out effective removal of phenol from wastewater by immobilizing phenol degradation bacteria onto hydrogels which are able to concentrate phenol. The spherical hydrogels were obtained by a photo-crosslinking reaction after gelation with calcium alginate. ENTG-mix-βCyD/HDI hydrogels were crosslinked polyethylene glycol units (ENTG) in the presence of βCyD/HDI powdery polymer obtained by crosslinking of βCyD with hexamethylene diisocyanate (HDI). Phenol degradation bacteria were immobilized onto the hydrogel and cultured for one month in a bubbling vessel. The changes of phenol concentration in model wastewater were determined by gas chromatography. The hydrogels were used for batchwise removal tests for 4 times at the initial phenol concentration of 500 mg/L. From the results of the average time for phenol degradation, activities of immobilized biocatalyst having βCyD component were greater than that of hydrogel without βCyD component. After use for 10 months, the effective performance was kept without decline.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 70 (10), 572-580, 2013

    The Society of Polymer Science, Japan

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