Green Process for Industrial Waste Transformation into Super-Oxidizing Materials Named Alkali Metal Ferrates (VI) - Université de Lorraine Access content directly
Journal Articles Materials Year : 2019

Green Process for Industrial Waste Transformation into Super-Oxidizing Materials Named Alkali Metal Ferrates (VI)

Ndue Kanari
  • Function : Author
  • PersonId : 1000077
Etleva Ostrosi
  • Function : Author
  • PersonId : 781979
  • IdRef : 140314865
Cécile Diliberto
Inna Filippova
  • Function : Author
Seit Shallari
  • Function : Author
Eric Allain
  • Function : Author
  • PersonId : 780814
  • IdRef : 192204300
Frédéric Diot
  • Function : Author
Fabrice Patisson
Jacques Yvon
  • Function : Author

Abstract

The investigation presented here features the design of a cleaner and greener chemical process for the conversion of industrial wastes into super-oxidizing materials. The waste of interest is the iron sulfate heptahydrate (FeSO 4 ·7H 2 O) mainly generated through the sulfate route used for titanium dioxide industrial production. The products of this transformation process are alkali ferrates (A 2 FeO 4 , A = Na, K) containing iron in its hexavalent state and considered as powerful oxidants characterized by properties useful for cleaning waters, wastewaters, and industrial effluents. The proposed process includes two steps: (i) The first step consisting of the pre-mixing of two solids (AOH with FeSO 4 ·xH 2 O) in a rotary reactor allowing the coating of iron sulfate in the alkali hydroxides through solid-solid reactions; and (ii) the second step involves the synthesis of alkali ferrates in a fluidized bed by oxidation of the single solid obtained in the first step in diluted chlorine. The chemical synthesis of alkali ferrates can be carried out within a timeframe of a few minutes. The usage of a fluidized bed enhanced the energy and mass transfer allowing a quasi-complete control of the ferrate synthesis process. The alkali ferrate synthesis process described here possesses many characteristics aligned with the principles of the "green chemistry".
Fichier principal
Vignette du fichier
materials-12-01977.pdf (1.66 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02167645 , version 1 (28-06-2019)

Identifiers

Cite

Ndue Kanari, Etleva Ostrosi, Cécile Diliberto, Inna Filippova, Seit Shallari, et al.. Green Process for Industrial Waste Transformation into Super-Oxidizing Materials Named Alkali Metal Ferrates (VI). Materials, 2019, 12 (12), pp.1977. ⟨10.3390/ma12121977⟩. ⟨hal-02167645⟩
83 View
102 Download

Altmetric

Share

Gmail Facebook X LinkedIn More