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Applied and Environmental Microbiology, February 2000, p. 816-819, Vol. 66, No. 2
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Distribution of Nitrosomonas europaea and Paracoccus denitrificans Immobilized in Tubular Polymeric Gel for Nitrogen Removal

Hiroaki Uemoto* and Hiroshi Saiki

Bio-Science Department, Central Research Institute of Electric Power Industry, Abiko City, Chiba 270-1194, Japan

Received 28 July 1999/Accepted 16 November 1999

To improve the cooperative removal of nitrogen by Nitrosomonas europaea and Paracoccus denitrificans, we controlled their distribution in a tubular gel. When ethanol was supplied inside the tubular gel as an electron donor, their distributions overlapped in the external region of the gel. By changing the electron donor from ethanol to gaseous hydrogen, the distribution of P. denitrificans shifted to the inside of the tube and was separated from that of N. europaea. The separation resulted in an increase of the oxidation rate of ammonia by 25%.


* Corresponding author. Mailing address: Bio-Science Department, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko City, Chiba 270-1194, Japan. Phone: (471) 82-1181. Fax: (471) 83-3347. E-mail: uemoto{at}criepi.denken.or.jp.


Applied and Environmental Microbiology, February 2000, p. 816-819, Vol. 66, No. 2
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.



This article has been cited by other articles:

  • Schmidt, I., van Spanning, R. J. M., Jetten, M. S. M. (2004). Denitrification and ammonia oxidation by Nitrosomonas europaea wild-type, and NirK- and NorB-deficient mutants. Microbiology 150: 4107-4114 [Abstract] [Full Text]