Advances and perspectives in integrated membrane capacitive deionization for water desalination

Wu, Qinghao; Liang, Dawei; Lu, Shanfu; Wang, Haining; Xiang, Yan; Aurbach, Doron; Avraham, Eran; Cohen, Izaak

doi:10.1016/j.desal.2022.116043

Cited by 45 publications

(16 citation statements)

References 121 publications

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“…Despite numerous efforts to advance electrode materials and cell architectures, CDI encounters crucial limitations for industrial applications (Figure ), including co-ion repulsion, a low concentration of feedwater, a limited operation voltage regime, and a discontinuous desalination process. Co-ion repulsion occurs during the charging step of the desalination process . In particular, CDI involves the adsorption of ions onto the surface of capacitive electrodes to remove them from aqueous solutions.…”

Section: CDImentioning

confidence: 99%

“…(1) Co-ion repulsion occurs during the charging step of the desalination process. 69 In particular, CDI involves the adsorption of ions onto the surface of capacitive electrodes to remove them from aqueous solutions. However, co-ions, which are ions that have the same charge as the electrode surface, experience electrostatic repulsion with the already adsorbed ions in the EDL.…”

Section: ■ Introductionmentioning

confidence: 99%

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Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Kim,

Lee

et al. 2024

Langmuir

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Capacitive deionization (CDI) has emerged as a promising desalination technology and recently promoted the development of multichannel membrane capacitive deionization (MC-MCDI). In MC-MCDI, the independent control of multiflow channels, including the feed and electrolyte channels, enables the optimization of electrode operation in various modes, such as concentration gradients and reverse voltage discharge, facilitating semicontinuous operation. Moreover, the integration of redox couples into MC-MCDI has led to advancements in redox-mediated desalination. Specifically, the introduction of redox-active species helps enhance the ion removal efficiency and reduce energy consumption during desalination. This systematic approach, combining principles from CDI and electrodialysis, results in more sustainable and efficient desalination. These advancements have contributed to improved desalination performance and practical feasibility, rendering MC-MCDI an increasingly attractive option for addressing water scarcity challenges. Despite the considerable interest in and potential of this process, there is currently no comprehensive review available that covers the operational features and applications of MC-MCDI. Therefore, this Review provides an overview of recent research progress, focusing on the unique cell configuration, vital operation principles, and potential advantages over conventional CDI. Additionally, innovative applications of MC-MCDI are discussed. The Review concludes with insights into future research directions, potential opportunities in industrial desalination technology, and the fundamental and practical challenges for successful implementation.

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Section: CDImentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Kim,

Lee

et al. 2024

Langmuir

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“…Second, the configuration and framework of an ECDI system also significantly impact its overall performance and practicality. Various designs, including flow-through or flow-by ECDI, , membrane ECDI (or MCDI), , and flow-electrode ECDI (or FCDI), , have been investigated, each with its own advantages and limitations. Therefore, selecting an optimal or compromise design based on various considerations becomes crucial.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study on the Ion-Selective Behavior of MnO_x for Electrochemical Deionization

Tu,

Huang,

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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Manganese oxide is an effective active material in several electrochemical systems, including batteries, supercapacitors, and electrochemical deionization (ECDI). This work conducts a comprehensive study on the ion-selective behavior of MnO x to fulfill the emptiness in the energy and environmental science field. Furthermore, it broadens the promising application of MnO x in the ion-selective ECDI system. We propose a time-dependent multimechanism ion-selective behavior with the following guidelines by utilizing a microfluidic cell and the electrochemical quartz crystal microbalance (EQCM) analysis. (1) Hydrated radius is the most critical factor for ions with the same valence, and MnO x tends to capture cations with a small hydrated radius. (2) The importance of charge density rises when comparing cations with different valences, and MnO x prefers to capture divalent cations with a strong electrostatic attraction at prolonged times. Under this circumstance, ion swapping may occur where divalent cations replace monovalent cations. (3) NH 4 + triggers MnO x dissolution, leading to performance and stability decay. The EQCM evidence has directly verified the proposed mechanisms, and these data provide a novel but simple method to judge ion selectivity preference. The overall ion selectivity sequence is Ca 2+ > Mg 2+ > K + > NH 4 + > Na + > Li + with the highest selectivity values of β Ca//Li and β Ca//Na around 3 at the deionization time = 10 min.

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“…These CDIs follow the principle of the double layer. 1 When an electric potential is applied, ions are adsorbed on the surface of the electrode pores through electrostatic interactions. The whole process is performed without electrochemical reactions.…”

Section: Introductionmentioning

confidence: 99%

“…One type of CDI device is based on porous carbon electrodes. These CDIs follow the principle of the double layer . When an electric potential is applied, ions are adsorbed on the surface of the electrode pores through electrostatic interactions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Flow Arrangement in Battery Electrode Deionization Stacks with Configurations of Plate Heat Exchangers

Liu,

Zhang,

Shen

et al. 2023

Ind. Eng. Chem. Res.

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Advances and perspectives in integrated membrane capacitive deionization for water desalination

Cited by 45 publications

References 121 publications

Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Comprehensive Study on the Ion-Selective Behavior of MnO_x for Electrochemical Deionization

Numerical Investigation of Flow Arrangement in Battery Electrode Deionization Stacks with Configurations of Plate Heat Exchangers

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Advances and perspectives in integrated membrane capacitive deionization for water desalination

Cited by 45 publications

References 121 publications

Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Emerging Frontiers in Multichannel Membrane Capacitive Deionization: Recent Advances and Future Prospects

Comprehensive Study on the Ion-Selective Behavior of MnOx for Electrochemical Deionization

Numerical Investigation of Flow Arrangement in Battery Electrode Deionization Stacks with Configurations of Plate Heat Exchangers

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Comprehensive Study on the Ion-Selective Behavior of MnO_x for Electrochemical Deionization