New packing materials for bioreactors based on coated and fiber-reinforced biocers

被引：23

作者：

Fiedler, D ^{[1
]}

Thron, A ^{[1
]}

Soltmann, U ^{[1
]}

Böttcher, H ^{[1
]}

机构：

[1] GMBU EV, Dept Funct Layers, D-01317 Dresden, Germany

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 16期

关键词：

D O I：

10.1021/cm040156o

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Stable shaped ceramic materials with embedded living cells that are applicable as biocatalytic packing material in bioreactors can be prepared by modification of the usual silica sol-gel process. The admixture of commercial alumina fibers (2-3 mum in diameter) shows an excellent reinforcing effect. By a simple casting process and drying in air, biocomposite materials with green-body character in any desirable shape are formed. The advantages of the biocers so prepared include high compactness, weak shrinkage during drying, and high mechanical stability. Due to the presence of residual water within the matrix, the incorporated cellular systems are living and show a high biocatalytic activity. Alternatively, biocatalytic packing materials can be fabricated by coating mixtures from aqueous silica nanosols with living cells on differently formed glass substrates. Coated and fiber-reinforced materials are successfully tested for the biodegradation of phenol with immobilized Rhodococcus cells and of glycol mixtures with Aspergillus spores in industrial wastewater.

引用

页码：3040 / 3044

页数：5

共 17 条

[1] SiO2 entrapment of animal cells.: Part 2:: Protein diffusion through collagen membranes coated with sol-gel SiO2 [J].