LIQUID-LIQUID EXTRACTION OF SILVER(I) AND MERCURY(II) FROM NITRIC ACID SOLUTIONS BY ALKYLSULFIDE

1 January 1983

journal article
research article
Published by Taylor & Francis in Solvent Extraction and Ion Exchange

Vol. 1 (3) , 541-552
https://doi.org/10.1080/07366298308918414

Abstract

The extraction of silver(I) and mercury(II) from nitric acid solutions by dihexylsulfide (DHS, R2S)in benzene has been examined under different conditions. It is found that silver is extracted into organic phase according to the following reactions: at low acidity AgN03(a) + 2R2S(o) 2(R2S)2AgN03(o)and at higheT acidity AgN03(a) + HN03(a) + 2R2S(o) 2(R2S)2AgN03-HN03(o), in which (a) and (o) represent the aqueous and organic phases, respectively. In addition the stoichiometric species, R₂S-AgN0₃ and R2S-AgN0₃-HNO₃, are formed when silver loading increases in the organic phase. The similar results are also obtained in the extraction of mercury, although the extraction efficiency of mercury is higher than that of silver.

Keywords

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