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Flotation and adsorption investigations of the systemn-dodecanoic acid/mercury at different pH values

  • Colloid Science
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Abstract

The systemn-dodecanoic acid/mercury in 0,1 N KCl solutions has been investigated within pH range 4,0–10,5 in order to characterize the adsorption of surfactant and to determine its influence on the flotation of mercury. Flotation tests have been carried out in a model mercury flotation apparatus developed by Pomianowski and Para. Some characteristic parameters of adsorption (attraction constant of Frumkin isotherm, adsorption coefficient at maximum adsorption potential, free standard adsorption enthalpy and area per molecule) have been determined by a. c. polarographic capacity-potential and capacity-time curves. Flotation recovery as well as attraction constant, adsorption coefficient and surface excess reach maximum at pH≈5,1. It is explained by the assumption of an ion-molecule associate formation.

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Author notes

  1. G. Para & J. Pawlikowska-Czubak

    Present address: Institute of Catalysis and Surface Chemistry, Polish Academy Sciences, Kraków

  2. K. Volke & H. Neubert

    Present address: Forschungsinstitut für Aufbereitung der AdW der DDR, Straße des Friedens 40, DDR-9200, Freiberg

Authors and Affiliations

  1. Research Institute of Mineral Processing, Academy of Sciences of the German Democratic Republic, Freiberg

    K. Volke & H. Neubert

Authors
  1. K. Volke
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  2. G. Para
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  3. J. Pawlikowska-Czubak
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  4. H. Neubert
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Additional information

Publ.-No. 810 from Research Institute of Mineral Processing, Academy of Sciences of the German Democratic Republic, Freiberg

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Volke, K., Para, G., Pawlikowska-Czubak, J. et al. Flotation and adsorption investigations of the systemn-dodecanoic acid/mercury at different pH values. Colloid & Polymer Sci 262, 245–251 (1984). https://doi.org/10.1007/BF01458968

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  • DOI: https://doi.org/10.1007/BF01458968

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