Inorganic Chemicals Industry >

2022 , Vol. 54 >Issue 4: 104 - 111

DOI: https://doi.org/10.19964/j.issn.1006-4990.2021-0356

Research & Development

Study on process of CO2 dissolution and absorption in bipolar membrane electrodialysis system

  • Yixin Zhao ,
  • Mengfan Wu ,
  • Jianhang Wang ,
  • Yingying Zhao
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  • 1. School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China
    2. Engineering Research Center of Seawater Utilization,Ministry of Education
    3. Hebei Collaborative Innovation Center of Modern Marine Chemical Technology
    4. The Fourth Construction CO.LTD of China Electronics System Engineering

Received date: 2021-05-31

  Online published: 2022-04-18

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Abstract

Seawater carbon sequestration technology is considered as a green,environmental-friendly,safe and reliable technology among CO2 capture,utilization and storage（CCUS） technologies,which has good development prospects.The key of seawater carbon sequestration technology is the dissolution and absorption of CO2 in the bipolar membrane electrodialysis system.The influence of seeding in the crystallizer,the composition of the ventilation system,the simulated flue gas flow and the current density of the bipolar membrane electrodialysis device on the CO2 dissolution and absorption effect was investigated.It was found that the external crystal seeds and the simulated flue gas was beneficial to the dissolution and absorption of CO2 in the bipolar membrane electrodialysis system,promoting production of CaCO3.Based on the above,with the increase of simulated flue gas flow,the specific absorption rate of CO2 was decreased,and most of CO2 in the solution was converted into HCO3-,while the generation rate of CO32- and CaCO3 would be reduced.With the increase of current density in electrodialysis unit,the generation rate of HCO3-,CO32- and CaCO3 was increased accordingly.This study provided a guidance for the application of acid gas in dissolution,absorption and mineralization in bipolar membrane electrodialysis system.

Key words： seawater carbon sequestration; CO2 dissolution and absorption; bipolar membrane electrodialysis system; water dissociation

Cite this article

Yixin Zhao , Mengfan Wu , Jianhang Wang , Yingying Zhao . Study on process of CO2 dissolution and absorption in bipolar membrane electrodialysis system[J]. Inorganic Chemicals Industry, 2022 , 54(4) : 104 -111 . DOI: 10.19964/j.issn.1006-4990.2021-0356

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