Three-Dimensional Immobilization of Bacterial Cells with a Fibrous Network and Its Application in a High-Rate Fixed-Bed Nitrifying Bioreactor.
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- Hayashi Hiroshi
- Department of Chemical Engineering, Waseda University
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- Ono Motomi
- Department of Chemical Engineering, Waseda University
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- Tsuneda Satoshi
- Department of Chemical Engineering, Waseda University
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- Hirata Akira
- Department of Chemical Engineering, Waseda University
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Abstract
A novel technique of immobilizing nitrifying bacteria using fibrous material, the three-dimensional immobilization with a fibrous network (3-D IFN), is proposed and its use in a high-rate nitrifying bioreactor is investigated. The fibrous carrier employed is ferro-nickel fibrous slag (FS), which is industrial solid waste from a ferro-nickel electrosmelting process. Since cell immobilization with FS is readily carried out within 90 seconds, this method is by far more rapid than any other cell immobilization techniques. A fixed-bed nitrifying reactor packed with cell-immobilizing FS is examined by both batch-mode and continuous feeding tests. By controlling the circulation flow rate, the transport of dissolved oxygen to the immobilized cells is improved, which is a distinct characteristic of this reactor. The continuous feeding test revealed that the ammonia removal rate of the reactor reached 6.5 kg-N/(m3-reactor)/d, which was extremely high compared with that of the conventional fixed-bed reactor for wastewater treatment. It is demonstrated that the 3-D IFN is a simple yet effective cell immobilization technique that can be successfully used in a high-rate nitrifying reactor.
Journal
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 35 (1), 68-75, 2002
The Society of Chemical Engineers, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679543128704
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- NII Article ID
- 10009396769
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- NII Book ID
- AA00709658
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- COI
- 1:CAS:528:DC%2BD38XpsFeiug%3D%3D
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- ISSN
- 18811299
- 00219592
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- NDL BIB ID
- 6054756
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed