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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2004, Volume 55, Issue 4,





Separartion by Ion Flotation of Bi(III) from Aqueous Systems
Ligia Stoica, Olimpia Micu, Sandala-Maria Roman


Abstract:

Bismuth is a metal with important applications in different industrial processes as well as in preparation of pharmaceutical products. The oxidic compounds of Bi(III) have special catalysis, electric and magnetic properties [1]. Some Bi(III) salts (carbonates, chlorides etc.) are used in medicine [2, 3]. However, too much Bi(III) can cause intoxications. That is why it has to be removed from the industrial effluents. Metal toxicity and efficient separation and recuperation possibilities are closely connected to the chemical speciation under which this appears in the effluent [4]. In the industrial effluents, Bi(III) concentration should have very low values, less than 0.1 mg . L-1 and that is why the use of some processes to assure an advanced purification is required. The ion flotation is part of them. This paper studies the separation by ion flotation of Bi(III) from aqueous solutions using a cationicc surfactant laurylamine type (LA). The researches followed the study of influence factors (pH, surfactant-coligand ratio, dilution ratio, flotation time) to establish the optimum separation parameters. Separation reproductibility and foam recovering processing are studied. Keywords: bismuth, flotation, separation, surfactant, cationic collector


Issue: 2004, Volume 55, Issue 4
Pages:
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