The Denitrification Capability of Cluster 1 Defluviicoccus vanus-Related Glycogen-Accumulating Organisms

Wang, Xiaolian, Raymond Zeng, Yu Dai, Peng, Yongzhen and Yuan, Zhiguo (2008) The Denitrification Capability of Cluster 1 Defluviicoccus vanus-Related Glycogen-Accumulating Organisms. Biotechnology and Bioengineering, 99 6: 1329-1336. doi:10.1002/bit.21711


Author Wang, Xiaolian
Raymond Zeng
Yu Dai
Peng, Yongzhen
Yuan, Zhiguo
Title The Denitrification Capability of Cluster 1 Defluviicoccus vanus-Related Glycogen-Accumulating Organisms
Journal name Biotechnology and Bioengineering   Check publisher's open access policy
ISSN 0006-3592
Publication date 2008-01-01
Year available 2007
Sub-type Article (original research)
DOI 10.1002/bit.21711
Open Access Status
Volume 99
Issue 6
Start page 1329
End page 1336
Total pages 8
Place of publication New York
Publisher Wiley Periodicals, Inc.,
Language eng
Subject C1
969999 Environment not elsewhere classified
060504 Microbial Ecology
Abstract The denitrification capability of Cluster I Defluviicoccus vanus-related glycogen - accumulating organisms (DvGAOs) is investigated. A sequencing batch reactor (SBR) fed with acetate as the sole carbon source was operated under alternating anaerobic-aerobic conditions to enrich Cluster I DvGAOs. Fluorescence in situ hybridization (FISH) showed that more than 85% of the bacterial population present in the reactor bound to the probes previously designed for Cluster I DvGAOs. A series of batch tests were performed to evaluate the capability of the community to reduce nitrate and nitrite. The tests were carried out both before and after the adaptation of the culture to anoxic conditions, and with both the intracellularly stored carbon and acetate as the electron donors. It was found that Cluster I DvGAOs were able to reduce nitrate but most likely unable to reduce nitrite. When un-adapted Cluster 1 DvGAOs were exposed to nitrate for the first time, a lag phase of approximately 4 h occurred, which was likely required for the synthesis of the necessary enzymes.
Keyword Cluster 1 Defluviicoccus vanus • denitrification • glycogen-accumulating organisms (GAOs) • lag phase • nitrate reduction • nitrite reduction
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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Created: Thu, 26 Mar 2009, 01:24:52 EST by Suzanne Read on behalf of Advanced Water Management Centre