Gill G Geesey and Fintan Van Ommen Kloeke Contents

14.1 Introduction 295

14.2 Microbial Flocs in Wastewater Treatment 296

14.3 Extracellular Enzymes 297

14.3.1 Forms of Phosphorus in Wastewater 297

14.3.2 Phosphatase Enzymes 298

14.4 Quantifying Extracellular Enzyme Activity Associated with

Microbial Flocs 298

14.5 Measurement of Phosphatase Activity in Activated Sludge Using Fluorogenic Substrates 300

14.6 Localizing Extracellular Enzyme Activity Associated with

Microbial Flocs 303

14.7 Identification of Populations of Cells Responsible for Extracellular

PO4ase Activities within Floc-Associated Microbial Communities 307

14.8 Conclusions 311

Acknowledgments 312

References 312

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