Processing of Sludge Water from Alumina Production by Electrodialysis
https://doi.org/10.18412/1816-0395-2024-11-28-32
Abstract
The possibility of using the electrodialysis for processing weak aluminate solutions (sludge water) for the purpose of their concentration and causticization is analyzed. For testing, a three-chamber electro-dialysis cell with heterogeneous cation exchange membranes MK-40 was used. The optimal operating parameters of the process were determined, as follows: pole-to-pole distance 3–4 cm and current density 2 A/dm2 at the operating voltage on the cell of 20–26 V. Specific electricity consumption was established as 9.7–20.6 kWh/kg alkali, causticization efficiency 56.1–69.6%, alkali yield – 81%.
About the Authors
N.V. Vasiunina
Siberian Federal University
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Associate Professor
I.V. Dubova
Siberian Federal University
Russian Federation
Russian Federation
Cand. Sci. (Tech.), Associate Professor
K.E. Druzhinin
Indast-PRO LLC
Russian Federation
Russian Federation
Deputy Director
T.R. Ghilmanshina
Siberian Federal University
Russian Federation
Russian Federation
Cand. Sci. (Tech.), Head of Department
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Review
For citations:
Vasiunina N., Dubova I., Druzhinin K., Ghilmanshina T. Processing of Sludge Water from Alumina Production by Electrodialysis. Ecology and Industry of Russia. 2024;28(11):28-32. (In Russ.) https://doi.org/10.18412/1816-0395-2024-11-28-32
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