scholarly journals Removal of Zn(II) and Mn(II) by Ion Flotation from Aqueous Solutions Derived from Zn-C and Zn-Mn(II) Batteries Leaching

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1335
Author(s):  
Agnieszka Sobianowska-Turek ◽  
Katarzyna Grudniewska ◽  
Paweł Maciejewski ◽  
Małgorzata Gawlik-Kobylińska
Keyword(s):  
Aqueous Solutions ◽  
Organic Compounds ◽  
Process Parameters ◽  
Atmospheric Pressure ◽  
Optimal Conditions ◽  
Flotation Process ◽  
Foaming Agent ◽  
Ion Flotation ◽  
Dilute Aqueous Solutions ◽  
Triton X

The Zn(II) and Mn(II) removal by an ion flotation process from model and real dilute aqueous solutions derived from waste batteries was studied in this work. The research aimed to determine optimal conditions for the removal of Zn(II) and Mn(II) from aqueous solutions after acidic leaching of Zn-C and Zn-Mn waste batteries. The ion flotation process was carried out at ambient temperature and atmospheric pressure. Two organic compounds used as collectors were applied, i.e., m-dodecylphosphoric acid 32 and m-tetradecylphosphoric 33 acid in the presence of a non-ionic foaming agent (Triton X-100, 29). It was found that both compounds can be used as collectors in the ion flotation for Zn(II) and Mn(II) removal process. Process parameters for Zn(II) and Mn(II) flotation have been established for collective or selective removal metals, e.g., good selectivity coefficients equal to 29.2 for Zn(II) over Mn(II) was achieved for a 10 min process using collector 32 in the presence of foaming agent 29 at pH = 9.0.

THE RADIOLYSIS OF SOME ORGANIC HALOGEN COMPOUNDS IN AQUEOUS SOLUTION

1960 ◽  
Vol 38 (1) ◽  
pp. 77-93 ◽  
Author(s):  
R. J. Woods ◽  
J. W. T. Spinks
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Organic Compounds ◽  
Gamma Rays ◽  
Organic Halogen ◽  
Halogen Compounds ◽  
Dilute Aqueous Solutions ◽  
Saturated Solutions

Dilute aqueous solutions of some halogen-substituted ethanols, acetaldehydes, and acetates have been irradiated with Co60 gamma rays, and the yield of acid products determined. Irradiations were carried out using air-saturated solutions and also solutions from which the air had been displaced by nitrogen or hydrogen. The acid yields are correlated with the structure of the organic compounds.

Cadmium Removal by Flotation from Diluted Aqueous Solutions. Determination of the Optimum Separation Conditions

2009 ◽  
Vol 59 (12) ◽  
Author(s):  
Adrian Turtureanu
Keyword(s):  
Aqueous Solutions ◽  
Molar Ratio ◽  
Optimal Conditions ◽  
Air Flow Rate ◽  
Cadmium Removal ◽  
Initial Concentration ◽  
Dilute Aqueous Solutions ◽  
Very High ◽  
Optimum Separation

The paper presents the removal of cadmium by flotation from dilute aqueous solutions, at a laboratory scale, using an anionic collector (oleic acid). The optimum values of the main parameters influencing this process were determined: pH of Cd(II) solutions, molar ratio collector:Cd(II), air flow rate, flotation time and initial concentration of Cd(II). Using these optimal conditions, a very high removal degree of cadmium (over 99%) was obtained.

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