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Effects of 2-picoline on zinc electrowinning from acidic sulfate electrolyte

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Abstract

The behaviour of 2-picoline with and without antimony during electrowinning of zinc from acidic sulfate solutions was studied and was compared with that of gum arabic which is commonly used in industry as a levelling agent. The effects of these additives on current efficiency, power consumption, deposit quality, polarization behaviour, crystallographic orientation and surface morphology were determined. The addition of 2-picoline reduced current efficiency, increased power consumption and lowered the surface quality of electrowon zinc. Addition of antimony increased current efficiency, reduced power consumption and produced improved surface morphology and crystal orientations, (101) (112) (102) (103) (114) over a wide range of their combinations.

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Authors and Affiliations

  1. Hydro and Electrometallurgy Division, Regional Research Laboratory, 751 013, Bhubaneswar, India

    S. C. Das

  2. School of Mathematical & Physical Sciences, Murdoch University, 6150, Murdoch, Western Australia, Australia

    P. Singh & G. T. Hefter

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  1. S. C. Das
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  2. P. Singh
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  3. G. T. Hefter
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Das, S.C., Singh, P. & Hefter, G.T. Effects of 2-picoline on zinc electrowinning from acidic sulfate electrolyte. J Appl Electrochem 26, 1245–1252 (1996). https://doi.org/10.1007/BF00249926

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  • DOI: https://doi.org/10.1007/BF00249926

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