2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 7. Non-ferrous / Mineral Processing / Environmental Protection
| Editors: | F. Kongoli, Z. Wang, T. Okura, E. Souza, A. C. Silva |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 256 pages |
| ISBN: | 978-1-987820-94-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Electrolysis Purification of Quarry and Industrial Wastewater From Copper
Tsisana Gagnidze1; Rusudan Chagelishvili 1; Zhiul Kebadze1;1IVANE JAVAKHISHVILI TBILISI STATE UNIVERSITY, RAFAEL AGLADZE INSTITUTE OF INORGANIC CHEMISTRY AND ELECTROCHEMISTRY, Tbilisi, Georgia;
Type of Paper: Regular
Id Paper: 307
Topic: 10
Abstract:
One of the promising ways of cleaning quarry and industrial waste water from copper ions is the electrolysis method, using electrodes with a highly developed reaction surface. We have studied the process of electrolytic copper extraction from dilute solutions (<1g/l) using cathodes made of carbon fibrous materials of a new generation. As a result of the experiments, materials with the best indices were chosen for the extraction of copper from poor sulfide solutions. An electrochemical reactor with different forms of cathode blocks made from carbonaceous materials was designed and constructed: (1) with a rotating cathode; (2) with flowing volume-porous cathode block; (3) with flowing volume-porous cathode block and with an internal mechanical stirrer.
When using an electrolyzer with improved hydrodynamic regime and with a cathode block from carbonaceous fibrous material, high values of copper recovery were obtained (99-100%) from dilute solutions with a current output of 60-65%. It is established that the parameters of the copper recovery process are determined mainly from the type of carbonaceous material, the conditions of electrolysis, and the design of the electrolyzer. It was also taken into account that the nature of the carbonaceous material and the degree of its graphitization affect the overvoltages of hydrogen and oxygen release on the electrodes.
It is shown that it is possible to effectively use carbonaceous fibrous materials for electrolytic copper recovery from industrial and quarry wastewater.
Keywords:
Effluent; Environment; Materials; Metals; Mining; Waste;References:
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