The physicochemical properties and application of polyphosphate ferric sulfate (PPFS)

[Physical and chemical properties] The structural formula of Polyphosphoric Ferric Sulfate (PPFS) is [Fe ₃ (PO) ₄ (SO ₄ ) ₃ ] _m , it is a dark reddish brown liquid, and a reddish brown solid can be obtained after concentration and drying

[Preparation method] The preparation principle of polyphosphorus ferric sulfate is to first prepare polyferric sulfate from ferrous sulfate through oxidation, then add a metered amount of sodium phosphate to the polyferric sulfate solution, and react for a period of time at a certain temperature to form polyphosphorus Iron sulfate, the solution is concentrated and dried to obtain a reddish-brown solid product

Add titanium dioxide to the reactor to produce by-product ferrous sulfate, add a certain amount of concentrated sulfuric acid at the molar ratio of ferrous sulfate to concentrated sulfuric acid of 1:0.

Then, add sodium phosphate at a molar ratio of ferrous sulfate to sodium phosphate of 1: (0.

[Application] Ferric polyphosphate sulfate can be used for the treatment of domestic sewage and production wastewater

Related links: Physicochemical properties and preparation methods of polyferric chlorinated sulfate (PFCS)