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A capacitive deionization system with high energy recovery and effective re-use

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  • Andres, Ginno L.
  • Yoshihara, Yoshinobu

Abstract

We have developed a simple and inexpensive hydrophilic activated-charcoal based electrode for a CDI (capacitive deionizer) cell system and examined its physical and electrochemical properties. In this study, the ion adsorption/desorption mechanisms of a CDI stack equipped with the developed activated-charcoal electrodes, having either uni-polar or bi-polar circuit structures, were evaluated. The experimental results showed that the CDI stack with a bi-polar circuit consumes lesser energy than that with a uni-polar connection. A combined flow-through and batch processing operation for ion adsorption and desorption processes was also systematically evaluated. Furthermore, the energy recovery by discharging the stored energy of the ion desorbing electrode pair to another pair for ion adsorption by switching four-CDI cells for both the discharge and the charge sides was 70% at the maximum.

Suggested Citation

  • Andres, Ginno L. & Yoshihara, Yoshinobu, 2016. "A capacitive deionization system with high energy recovery and effective re-use," Energy, Elsevier, vol. 103(C), pages 605-617.
    • Handle: RePEc:eee:energy:v:103:y:2016:i:c:p:605-617
    DOI: 10.1016/j.energy.2016.03.021
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    Citations

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    Cited by:

    1. Yuxin Jiang & Linfeng Jin & Dun Wei & Sikpaam Issaka Alhassan & Haiying Wang & Liyuan Chai, 2022. "Energy Consumption in Capacitive Deionization for Desalination: A Review," IJERPH, MDPI, vol. 19(17), pages 1-19, August.
    2. Yang, Junqin & Zhao, Hui & Li, Chenchen & Li, Xiuwei, 2021. "A direct energy reuse strategy for absorption air-conditioning system based on electrode regeneration method," Renewable Energy, Elsevier, vol. 168(C), pages 353-364.
    3. Chen, Yu-Wu & Chen, Jhao-Fu & Lin, Chang-Hua & Hou, Chia-Hung, 2019. "Integrating a supercapacitor with capacitive deionization for direct energy recovery from the desalination of brackish water," Applied Energy, Elsevier, vol. 252(C), pages 1-1.
    4. Shenxu Bao & Chunfu Xin & Yimin Zhang & Bo Chen & Wei Ding & Yongpeng Luo, 2023. "Application of Capacitive Deionization in Water Treatment and Energy Recovery: A Review," Energies, MDPI, vol. 16(3), pages 1-24, January.
    5. Meijun Liu & Mengyao He & Jinglong Han & Yueyang Sun & Hong Jiang & Zheng Li & Yuna Li & Haifeng Zhang, 2022. "Recent Advances in Capacitive Deionization: Research Progress and Application Prospects," Sustainability, MDPI, vol. 14(21), pages 1-41, November.

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