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Separation of Mercury with an Ammonium Sulfate‐Ammonium Thiocyanate‐Ethyl Violet Flotation System
Author(s) -
Chen Bingyi,
Bai Haixin,
Li Quanmin,
Liu Guoguang
Publication year - 2003
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200300121
Subject(s) - chemistry , ammonium thiocyanate , thiocyanate , ammonium sulfate , ammonium , inorganic chemistry , mercury (programming language) , sulfate , aqueous solution , metal ions in aqueous solution , ternary operation , ion , nuclear chemistry , chromatography , organic chemistry , computer science , programming language
The separation behavior of mercury by a flotation system consisting of ammonium sulfate, ammonium thiocyanate and ethyl violet, and the conditions for the separation of Hg(II) with other common metal ions have been studied. The studies show that in aqueous solutions, Hg(II) combines with NH 4 SCN and ethyl violet(EV) into dissoluble ternary ion‐association complex [Hg(SCN)4 2− ]•(EV) 2 . In the presence of ammonium sulfate, the precipitate is floats well on the surface of the water phase and separates from water thoroughly. It shows that Hg(II) can be separated completely from Cd(II), Fe(II), Co(II), Ni(II), Mn(II) and Al(III) by flotation at pH1.0. The flotation mechanism of Hg(II) is described in this paper.