Modeling the aerobic metabolism of polyphosphate-accumulating organisms enriched with propionate as a carbon source

Oehmen, Adrian, Zeng, Raymond J., Keller, Jurg and Yuan, Zhiguo (2007) Modeling the aerobic metabolism of polyphosphate-accumulating organisms enriched with propionate as a carbon source. Water Environment Research, 79 13: 2477-2486. doi:10.2175/106143007X184717


Author Oehmen, Adrian
Zeng, Raymond J.
Keller, Jurg
Yuan, Zhiguo
Title Modeling the aerobic metabolism of polyphosphate-accumulating organisms enriched with propionate as a carbon source
Journal name Water Environment Research   Check publisher's open access policy
ISSN 1061-4303
1554-7531
Publication date 2007-12-01
Year available 2007
Sub-type Article (original research)
DOI 10.2175/106143007X184717
Open Access Status DOI
Volume 79
Issue 13
Start page 2477
End page 2486
Total pages 10
Place of publication Alexandria, USA
Publisher Water Environment Federation
Language eng
Subject 100299 Environmental Biotechnology not elsewhere classified
1002 Environmental Biotechnology
Abstract In enhanced biological phosphorus removal (EBPR) systems, polyphosphate-accumulating organisms (PAOs) are primarily responsible for removing phosphate from wastewater. Propionate is an abundant carbon substrate in many EBPR plants and has been suggested to provide PAOs an advantage over their carbon competitors—the glycogen-accumulating organisms (GAOs). The aerobic metabolism of PAOs enriched with a propionate carbon source is studied in this paper. A metabolic model is proposed and experimentally validated to characterize the aerobic biochemical transformations by PAOs. The model predicts very well the experimental data obtained from the enriched PAO culture through solid-, liquid-, and gas-phase analyses. This model may be combined with previously formulated metabolic models to better describe the biochemical activity of PAOs with acetate and propionate as the primary carbon sources. Furthermore, it can also facilitate the study of the effect of different carbon sources on PAO-GAO competition.
Keyword Enhanced biological phosphorus removal
Polyphosphate-accumulating organisms
Metabolic model
Propionate
Offgas analysis
Titration
Glycogen-accumulating organisms
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
 
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Created: Mon, 02 Feb 2009, 17:56:41 EST by Ms Karen Naughton on behalf of Advanced Water Management Centre