Title

Polyhydroxyalkanoates Form Potentially A Key Aspect Of Aerobic Phosphorus Uptake In Enhanced Biological Phosphorus Removal

Keywords

Biological nutrient removal (BNR); Enhanced biological phosphorus removal (EBPR); Phosphorus accumulating organisms (PAO); Polyhydroxyalkanoates (PHAs); Volatile fatty acids (VFAs)

Abstract

Eighteen anaerobic/aerobic batch experiments were conducted with a variety of volatile fatty acids (VFAs) on a sequencing batch reactor (SBR) population displaying enhanced biological phosphorus removal (EBPR). A statistically significant (P≪0.01 for all variables) correlation between aerobic phosphorus uptake and polyhydroxyalkanoates (PHAs) quantity and form was observed. The results suggest that poly-3-hydroxy-butyrate (3HB) results in significantly higher aerobic phosphorus (P) uptake per unit mmoles as carbon (mmoles-C) than poly-3-hydroxy-valerate (3HV). The results showed that acetic and isovaleric acids resulted in higher P removals (relative to propionic and valeric acids) during EBPR batch experiments not because of higher PHAs quantity, but largely because the predominant type was 3HB rather than 3HV. In contrast propionic and valeric acids resulted in 3HV, and showed much lower aerobic P uptake per unit PHAs. © 2002 Elsevier Science Ltd. All rights reserved.

Publication Date

1-1-2002

Publication Title

Water Research

Volume

36

Issue

14

Number of Pages

3473-3478

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0043-1354(02)00047-7

Socpus ID

0035995198 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0035995198

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