| Issue |
E3S Web Conf.
Volume 192, 2020
VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|
|
|---|---|---|
| Article Number | 02013 | |
| Number of page(s) | 8 | |
| Section | Problems of Complex Processing of Mineral Raw Materials and New Technologies of Mineral Processing | |
| DOI | https://doi.org/10.1051/e3sconf/202019202013 | |
| Published online | 30 September 2020 | |
Study of flow regimes and gas holdup in a different potentials medium in an aerated column
1
Mining Institute FEB RAS, 51 Turgenev st., Khabarovsk, 680000, Russia;
2
FSBEI HE Irkutsk National Research Technical University, 664074, Irkutsk, Russia;
3
SIEMAG TECBERG group, Haiger, Germany
* Corresponding author: Kostyan1986_ne@mail.ru
A generation of hydrogen and oxygen bubbles by of aqueous solutions of electrolytes was carried out. Two electrolysis modifications was study: electrolysis without a membrane to production of oxygen and hydrogen and membrane electrolysis with separation of catholyte and anolyte. The influence of the model conditions of the experiment such as electrolyte pH, concentration, and current density and the distribution of bubble sizes and gas holdup in the column are discussed. An inverse dependence of the hydrogen bubbles diameter in the catholyte medium on the current density and a direct dependence on the concentration of electrolytes are experimentally investigated. The oxygen bubbles tend to become larger with increasing current density and electrolyte concentration in anolyte medium. In electrolysis without a membrane, bubbles become smaller with increasing current density and decreasing the electrolyte concentration.
© The Authors, published by EDP Sciences, 2020
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