Phosphate sorption on leucoxene

The sorption of phosphorus on the non-magnetic fraction of the gravity concentrate of ilmenite-leuсoxene ore (hereinafter, leucoxene) (Pizhemskoe deposit, Middle Timan, Russia) at a pH (1-12) of a sodium phosphate solution with a fixed phosphate concentration of about 0.01 mol/l, as well as sorption (pH = const) in the concentration range of 0.001-0.01 mol/l was studied. We presented a phosphate ion form adsorbed on leucoxene surface. At that we observed a shift of the zero point charge on the aggregate surface. The experiments has confirmed the idea that leucoxen is most likely the main geochemical barrier to phosphorus under conditions of hypergenesis.