Time (min)

FIGURE 14.6 Increase in fluorescence intensity of area of floc particle as a function of time during which ELF-PO4 is being hydrolyzed to ELF by extracellular PO4ase enzymes.

P-containing organic polymer

P-containing organic polymer

Release of inorganic P from organic polymer by bacterial exoenzymes and inorganic P uptake by cells

FIGURE 14.7 Schematic representation of detrital, polymeric, organic-PO4 diffusion from bulk liquid phase into floc matrix containing extracellular PO4ase-producing bacteria. Pi released at cell surface is taken up by the cells and transformed into biomass-P.

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