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Recovery and valorization of fluosilicic acid from phosphoric acid plant for the production of concentrated hydrochloric acid

Fluosilicic acid is the main fluoride waste water on phosphoric acid production. This effluent is simply discharged into the sea from phosphoric acid plant in Senegal. The disposal of this effluent is an ever more serious environmental problem for phosphoric acid manufacturers. In fact large amount of fluosilicic acid is discharged into the sea. Therefore our attention has been focused on developing process for working-up this fluorine waste by producing hydrochloric acid. Through laboratory research, we have been able to use a water treatment plant containing fluosilicic acid in a 25% solution in order to produce hydrochloride acid in a 33% solution.


Auteur(s) : Touré Alpha Ousmane, Sambe Falilou Mbacké, Démo Koïta , Diop Codou Mar Guèye.
Pages : 21 - 25
Année de publication : 2013
Revue : Journal de la Société Ouest-Africaine de Chimie
N° de volume : 36
Type : Article
Statut Editorial : Comité de rédaction
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