Extractive removal of arsenic from sulphuric acid solutions

• Autorzy: Wiśniewski M. , Iberhan L.
• Języki publikacji: EN

Abstrakty

EN

In the study, the extraction of arsenic(III) and arsenic(V) was investigated from the concentrated aqueous solutions of the sulphuric acid using the hydrophobic reagents of various structure and composition. The studies included stripping with water, too. The studies took advantage of the organophosphorus extracting agents CyanexŽ 923, CyanexŽ 925, CyanexŽ 301 and their mixtures, as well as of the 2-ethylhexane-l,3-diol and the hydroxamic acids dissolved in toluene. The study aimed at the removal of the maximum amounts of arsenic(III) and arsenic(V) from the sulphuric acid solution at the concentration of 150 g/dm3, using the multistage co-current or the counter-current extraction and, then, the removal of the arsenic from the organic phases by stripping with the water, with the regeneration of the extracting agent. The linear extraction and the stripping isotherms obtained in a given range of the concentrations, were used for a discussion on the multistage extraction, and the stripping of arsenic. The experimental results proved to be consistent with the obtained isotherms of the two processes and their equations.

Słowa kluczowe

EN

arsenic removal; multistage extraction; stripping; organophosphorus extractants; Cyanex; hydroxamic acids; glycols; industrial wastes

PL

arsen; usuwanie arsenu; ekstrakcja; cyanex; glikol; odpady przemysłowe

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2004
• Tom: Vol. 6, nr 3
• Strony: 41--44
• Opis fizyczny: Bibliogr. 9 poz., tab., rys.

Twórcy

autor

Wiśniewski M.

• Poznań University of Technology, Institute of Chemical Technology and Engineering, pl. M. Skłodowskiej-Curie 2, 60-965 Poznań

autor

Iberhan L.

• Poznań University of Technology, Institute of Chemical Technology and Engineering, pl. M. Skłodowskiej-Curie 2, 60-965 Poznań

Bibliografia

• (1) Apostoluk W., Charewicz W., Wódka J., Adamski Z., Metody wydzielania związków arsenu z roztworów wodnych. II. Roztwory potrawienne i elektrolity porafinacyjne, Rudy Metale, 1996, 41, 110.
• (2) Szymanowski J., Wiśniewski M., Industrial processes for copper extraction. Part II. Removal of arsenie, antimony and bismuth from technological sulphuric acid solutions. Polish J. Appl. Chem., 1996, 40, 3.
• (3) Giganov G. P., Travkin V. E, Anikina N. P, Ekstrakcija myszjaka iz sernokislych rastworow tributylfosfatom. Tsvet. Met, 1978, 8, 27.
• (4) Wiśniewski M, Extraction of Arsenie from Sulphuric Acid Solutions by Cyanex 923. Hydrometallurgy, 1997, 46, 235.
• (5) Wiśniewski M, Removal of Arsenie from Sulphuric Acid Solutions J. Radioanal Nuci. Chem, 1998, 228, 105.
• (6) Bogacki M. B, Wiśniewski M, Szymanowski J, Effect of extractant on arsenic(V) recovery from sulphuric acid solutions. J. Radioanal. Nuci. Chem, 1998, 228, 57.
• (7) Dziwiński E, Szymanowski J., Composition of Cyanex® 925, Solvent Extr. lon Exch, 1999, 17, 1515.
• (8) Iberhan L, Wisniewski M., Removal of arsenic(III) and arsenic(V) from sulphuric acid solution by liquid/liquid extraction. J. Chem. Technol. Biotechnol, 2003, 78, 659.
• (9) Marczenko, Balcerzak M., Z., Spektrofotometryczne metody w analizie nieorganicznej, PWN, Warszawa, 1998.