Phosphorus recovery from acidic wastewater by hydroxyapatite precipitation.

Phosphorus recovery from acidic wastewater was carried out using lime milk at various Ca/P molar ratios in the range of 0.6-1.8.

Food multiphosphates-preparation and properties.

Test results of the equilibrium between potassium mono- (ortho), di-, and triphosphates present in products of condensation of potassium orthophosphate mixtures, with regard to the molar ratio K/P, are discussed. Tests were performed within the molar ratio K/P range of 1.5 to 2.