TITLE:
Effect of Degree of ClO‾ Hypochlorite on the Wet Synthesis of Ferrate (VI)
AUTHORS:
Abdellatif El Maghraoui, Abdelaziz Zerouale, Mustapha Ijjaali
KEYWORDS:
Ferrates, Bactericides, Antioxidant, Flocculant, Coagulant, Wet, Water Treatment
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.5 No.4,
April
22,
2015
ABSTRACT: This work is a result of previously done studies on the synthesis of A2FeVIO4 wet ferrate (VI) formula, using chlorine as an oxidant. The major problem of
these ferrates is related to their stability over time. This brings us to
identify and optimize the critical parameters influencing the preparation of the Na2FeO4 at room
stable phase with acceptable performance. The use of water bleach (hypochlorite
ClO‾) at a chlorometric
degree of 50°F in the synthesis
of the Na2FeO4 ambient stable phase promotes the oxidation of iron (II) iron to (VI) in a concentrated
NaOH alkaline medium. The synthesis reaction is in the presence of FeSO4 7H2O hydrated iron sulfate at a temperature of about 55°C in order to simplify the synthesis process, to
enhance the production of the Fe (VI) and to meet the growing demand of
ferrates (VI) for their interest in the treatment of water. Monitoring the degradation
of synthesized Na2FeO4 shows its stability up to 12
months, which facilitates storage and transportation. The phases obtained were
characterized by IR spectroscopy, and RX by UV spectrophotometer, measuring the
optical density at 507 nm.