Special focus on water
and wastewater treatment –
Intecna’s sodium ferrate
production and uses
Throughout the last ten years, several experimental works about the Ferrates laboratory and pilot production process and their application have been published.
This family of products showed a very high oxidant capacity, for the state of oxidation of the iron (VI) (SODIUM FERRATE), which sparked a remarkable interest in its applications both for disinfection and for especially complicated water treatments (landfill leachate, arsenic removal, ammonia, surfactant removal, etc. The redox potential of Ferrate is higher than ozone under acidic conditions and is the highest of all the oxidant disinfectants used for water and wastewater treatment.
All studies carried on about the use of Ferrates, demonstrate that their reactions with pollutants are typically fast with the formation of non-toxic by-products. During oxidation of organic matter and microorganisms in water, ferrate (VI) will be reduced to ferric (III), generating a coagulant that has proven to reduce turbidity of water and decrease the concentration of natural organic matter.
Ferrate in addition to its oxidant and coagulant powers, acts as disinfect that does not react with organic matter to form carcinogenic tri-halomethanes (THM). Since the first observation of the abilities of the ferrate to kill and inactivate bacteria and viruses, many studies have also proven that it can retard the growth of biofilms, and serves as an anti-fouling agent. Researchers have shown that for a low dose of ferrate (10 mg/L as Fe), approximately two logs of inactivation of total bacteria were observed.
Special focus on oil&gas sector
Special focus on water and wastewater treatment – fluorides removal
The INTECNA’s Ferrate product
has additional advantages: the product is able to cause the precipitation of phosphorus, remove heavy metals, kill spores, bacteria, viruses and protozoa. In addition, the product produces no aquatic toxicity, deactivates residual drugs, pesticides and micro-pollutants and removes colour & odours.
INTECNA’s process has been registered in own PATENT 2013 A 001804, and allows the production of pure sodium ferrate, using an electrolytic cell which has one sector (anolyte) containing an anode, and a second sector (catholyte) containing a cathode. Sectors are separated from a conductive membrane.