Phosphorus Recovery from PAC Sludge: Characterization and Bioavailabilities Studies

摘要

Bioavailability of recovered P differs with the methods used. CaCl_2 showed highest P yield (98.12%) and P bioavailability with citric acid (99%), with NAC (62.29%) and with AAC(97.69%). The major P products were hydroxyapatite, chloroapatite (with CaCl_2) and holtedahlite (with MgCl_2).