Journal article

Anaerobic and aerobic metabolism of glycogen-accumulating organisms selected with propionate as the sole carbon source

Adrian Oehmen, Raymond J Zeng, Aaron M Saunders, Linda L Blackall, Jurg Keller, Zhiguo Yuan

MICROBIOLOGY-SGM | MICROBIOLOGY SOC | Published : 2006

Abstract

In the microbial competition observed in enhanced biological phosphorus removal (EBPR) systems, an undesirable group of micro-organisms known as glycogen-accumulating organisms (GAOs) compete for carbon in the anaerobic period with the desired polyphosphate-accumulating organisms (PAOs). Some studies have suggested that a propionate carbon source provides PAOs with a competitive advantage over GAOs in EBPR systems; however, the metabolism of GAOs with this carbon source has not been previously investigated. In this study, GAOs were enriched in a laboratory-scale bioreactor with propionate as the sole carbon source, in an effort to better understand their biochemical processes. Based on compr..

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University of Melbourne Researchers