pfs / polymer ferric sulphate/pfs / polymer ferric sulphate

pfs / polymer ferric sulphate/pfs / polymer ferric sulphate
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  • What is poly ferric sulfate (PFS)?
  • Poly ferric sulfate (PFS) with the general formula of [Fe2 (OH) n (SO4)3-n/2] m (n < 2, m > 10) is a relatively new kind of inorganic coagulant. It has been reported by several researchers that it e...
  • Are PFS polymerised coagulants better than non-polymerized coagulant?
  • Additionally, the prepared PFS polymerised coagulants exhibit a significantly better coagulation performance than the respective non-polymerised one, i.e. ferric sulphate. The process of coagulation is a core environmental protection technology, which is mainly used in the water or wastewater treatment facilities.
  • Why are PFS coagulants better than ferric sulphate?
  • Therefore, as the PFS coagulants consist mainly of polymeric species, they exhibit better coagulation behaviour. It is worth noting that for a 90% removal efficiency, only 20 mg/l of PFS are required, whereas the respective dosage of ferric sulphate in this case is much higher, i.e. 30 mg/l.
  • Is PFS a polymeric salt?
  • In polymeric form, PFS is one of the pre-hydrolysing metallic salts with the chemical formula [Fe2 (OH) n (SO4)3−n/2] m (where, n < 2, m > 10) and has a dark brownish red colour as well as is more viscous and less corrosive. PFS has an amorphous structure with small traces of crystallinity, containing both hydroxyl and sulphate functional groups.