2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 11: Recycling & Environmental
| Editors: | Kongoli F, Havlik T, Pagnanelli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 410 pages |
| ISBN: | 978-1-987820-34-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Electrochemical Purification of Quarry Waters from the Ions of Heavy Metals
Tsisana Gagnidze1; Zhiul Kebadze1; Liana Kakuria1; Ketevan Ugrelidze1;1IVANE JAVAKHISHVILI TBILISI STATE UNIVERSITY, RAFAEL AGLADZE INSTITUTE OF INORGANIC CHEMISTRY AND ELECTROCHEMISTRY, Tbilisi, Georgia;
Type of Paper: Regular
Id Paper: 89
Topic: 10
Abstract:
Electrolysis method is among the promising ones for purification of quarry sewage from copper ions. But Electrolysis method is not widely abundant for copper extraction from diluted solutions (Cu<1 g/l) because of low current efficiency and polarization and because of high voltage at electrolyzer. For copper extraction with a high degree and with a high current efficiency from diluted solutions, we have elaborated a special construction of main electrolyzer with corresponding hydrodynamic regime. The shape and location of the electrodes in an electrolyzer is favorable for fluid motion between the electrodes by high rate and for automatic control of consistency between solution concentration and current density at the electrodes, which is favorable for retention of maximum current efficiency of the product. The reactor operates by hydro cyclone principle. The fluid flow, moving by high rate along the electrodes, removes the cathode product, which is collected on the bottom of conic body (collector) from which it is periodically discharged. In the reactor, a considerable increase of the intensity of the forced convection as well as solving the problem of copper powder removal from the cathodes are attained. An elaborated construction of electrochemical reactor allows to perform the purification of quarry waters from copper ions by high efficiency (95% extraction of copper) at power consumption corresponding to 5-10% of copper cost. Hydro electrometallurgical technology of our elaboration for purification-processing of sewage provides the complex processing by preparation of commercial products: copper ingots of 99,8%; vitriol and other chemical compounds; bio dyes and other pigments; zinc and its powder; brasses of various type; gold; pure water.
Keywords: Electrolyzer, guarry waters, cathode, anode
Keywords:
Effluent; Electric; Environment;References:
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