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Numerical Simulation of Mass Transfer Process of Acid and Base Production with Bipolar Membrane
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Juan ZENG, Yufeng ZHANG, Meng LIU, Kanping YU
Mining and Metallurgical Engineering | 2025, 45(1) : 123 - 128
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Mining and Metallurgical Engineering | 2025, 45(1): 123-128
• METALLURGY •
Numerical Simulation of Mass Transfer Process of Acid and Base Production with Bipolar Membrane
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Juan ZENG, Yufeng ZHANG, Meng LIU, Kanping YU
Affiliations
  • Changsha Research Institute of Mining and Metallurgy Co, Ltd, Changsha 410012, Hunan, China
Published: 2025-02-01 doi: 10.3969/j.issn.0253-6099.2025.01.023
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In order to clarify the mass transfer law in the process of salt conversion into corresponding acid and base by introducing bipolar membrane and thus to instruct industrial production with it, a model of electrodialysis unit cell with Na2SO4 as the raw material was constructed by introducing bipolar membrane (BPM) based on Nernst-Planck and Poisson equations. Key parameters including the number of grids and the capacity of membrane groups of the unit cell were obtained by calculating with COMSOL Multiphysics software. The salt conversion rates in the unit cell with different voltage and feed concentration were calculated based on simulation, and then compared with the experimental data. The results show that with the grid number of 30 000 and the membrane group capacity of negative/positive membrane at 300 mol/m3, the simulated results with the constructed model are in good agreement with the measured data. Based on the corresponding calculation, data of potential distribution, ion distribution and distribution of ion migration flux in the unit cell during mass transfer process were obtained. It is found that the mass transfer rate and energy efficiency of Na2SO4 converted into corresponding acid and base by bipolar membrane are mainly influenced by voltage drop and membrane voltage in the unit cell.

bipolar membrane  /  mass transfer  /  model  /  numerical simulation  /  ion exchange membrane  /  electrodialysis  /  membrane separation  /  acid and base recovery
Juan ZENG, Yufeng ZHANG, Meng LIU, Kanping YU. Numerical Simulation of Mass Transfer Process of Acid and Base Production with Bipolar Membrane[J]. Mining and Metallurgical Engineering, 2025 , 45 (1) : 123 -128 . DOI: 10.3969/j.issn.0253-6099.2025.01.023
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Year 2025 volume 45 Issue 1
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doi: 10.3969/j.issn.0253-6099.2025.01.023
  • Receive Date：2024-09-03
  • Online Date：2026-03-17
  • Published：2025-02-01
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  • Received：2024-09-03
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    Changsha Research Institute of Mining and Metallurgy Co, Ltd, Changsha 410012, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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