The role of poly-hydroxy-alkanoate form in determining the response of enhanced biological phosphorus removal Biomass to volatile fatty acids

    Authors

    Y. H. Liu; C. Geiger;A. A. Randall

    Comments

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    Abbreviated Journal Title

    Water Environ. Res.

    Keywords

    phosphorus; enhanced biological phosphorus removal; phosphorus-accumulating organisms; volatile fatty acids; poly-hydroxyalkanoates; biological nutrient removal; PHOSPHATE REMOVAL; ACTIVATED-SLUDGE; ANAEROBIC METABOLISM; MODEL; POLYHYDROXYALKANOATES; SYSTEMS; STOICHIOMETRY; Engineering, Environmental; Environmental Sciences; Limnology; Water; Resources

    Abstract

    Anaerobic-aerobic batch experiments indicated that poly-hydroxy-alkanoate (PHA) form was important in determining the net phosphorus removal resulting from different volatile fatty acids (VFAs). Poly-3-hydroxy-butyrate (3HB) content was found to correlate fairly well with higher observed aerobic phosphorus uptake per unit PHA carbon degraded. Poly-3-hydroxy-valerate (3HV) correlated with lower aerobic phosphorus uptakes per unit PHA carbon degraded. These experiments, conducted with synthetic wastewater, imply that VFA speciation might have a significant effect on aerobic phosphorus uptakes and net phosphorus removal. In addition, the model parameter f(P,UPT) (Barker and Dold, 1997) could vary with the proportion of acetic to propionic acid received (i.e., the acetic/propionic acid ratio may be an important parameter for these systems). Carbohydrate data implied that the lower aerobic phosphorus uptake resulting from 3HV might have been caused by a greater fraction of PHA carbon shunting to carbohydrate biosynthesis during aerobiosis. Water Environ. Res., 74, 57 (2002).

    Journal Title

    Water Environment Research

    Volume

    74

    Issue/Number

    1

    Publication Date

    1-1-2002

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    57

    Last Page

    67

    WOS Identifier

    WOS:000174870000006

    ISSN

    1061-4303

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