Design shape of CDI cell applied with APSf and SPEEK and performance in MCDI

Jeon, Yi Seul; Cheong, Seong Ihl; Rhim, Ji Won

doi:10.1007/s13233-017-5064-2

Cited by 18 publications

(5 citation statements)

References 37 publications

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“…Figure 13 shows the velocity profiles of the CDI rectangular flow channel at different flow rates. It can be seen that the velocities on the outside are higher than the velocities on the inside at high flow rates unlike some previous reports (Gaikwad et al 2020;Jeon et al 2017). That means that the distribution of the solution is not uniform so that the desalination efficiency of the outside of the CDI is higher than that of the inside.…”

Section: Adsorption Kineticscontrasting

confidence: 59%

Experimental and theoretical study of a new CDI device for the treatment of desulfurization wastewater

Liu

et al. 2021

Environ Sci Pollut Res

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Section: Adsorption Kineticscontrasting

confidence: 59%

Experimental and theoretical study of a new CDI device for the treatment of desulfurization wastewater

Liu

et al. 2021

Environ Sci Pollut Res

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“…During operation, the suspended electrolyte was operated in semicontinuous single circulation mode cyclically with alternative “desalination” (30 min) and “brine discharge” (15 min) periods (Figure a). During desalination period, a typical saltwater containing 0.5 g L –1 NaCl − was continuously pumped in the middle chamber at a flow rate of 1.7 mL min –1 in single pass mode, and the electrolyte containing 2.5% suspended electrodes in 0.5 g L –1 NaCl (60 mL) was circulated at a flow rate of 4 mL min –1 . A constant voltage of 1.2 V was added on the electrodes using an electrochemical station (CHI 660E, Chenhua, China).…”

Section: Materials and Methodsmentioning

confidence: 99%

Enhanced Charge Efficiency and Electrode Separation Utilizing Magnetic Carbon in Flow Electrode Capacitive Deionization

Gao

et al. 2020

ACS EST Eng.

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Flow electrode capacitive deionization (FCDI) holds great advantage and potential compared with conventional CDI as it enables continuously water desalination. However, efficient electrode separation to prevent its runoff is a great challenge that has not been well addressed. In this study, we demonstrated an FCDI process tailored for ion electrosorption using magnetic activated carbons (MACs) synthesized by simple coprecipitation of Fe 3 O 4 on carbon substrate. The Fe 3 O 4 provides the magnetism necessary for magnetic separation, while the carbon substrate endows electrosorption sites for ions. When used as electrodes in desalination cycles, the MACs exhibit similar salt removal rate with bare activated carbon but extremely high charge efficiency (>100%) and energy efficiency because of enhanced interparticle aggregation increasing electric conductivity and causing charge imbalance in the electrode chambers. The MAC also exhibited excellent magnetic separation efficiency (>99.81%) with its half retention lifetime 2 orders of magnitude higher than activated carbon and high stability with a lifetime of thousands of cycles. This study provides an easy and "contactless" separation of the fluidized electrodes in the FCDI system, which is safe and friendly for FCDI operation and maintenance in practical application.

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“…The target was an error tolerance of 0.0001. The inlet pressure was dependent on the flux setting, and the outlet pressure was set as atmospheric pressure (1 MPa) . To simplify the simulated process, the ion transfer process was ignored.…”

Section: Experimental Sectionmentioning

confidence: 99%

Novel Current Collector with Mosquito-Repellent Incense-Shaped Channel of Flow Electrode Capacitive Deionization

Wang

Bian

et al. 2022

ACS Sustainable Chem. Eng.

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A spiral mosquito-repellent (MR) incense-shaped (MR-shape) channel was designed and equipped in a flow electrode capacitive deionization system. Computational fluid dynamics was conducted to analyze the hydrodynamic performance of the suspension electrode flow process. The current collector that equipped the newly designed MR-shaped channel showed low flow resistance and almost no stagnant regions. Compared with a traditional runway shape (R-shape) and snake shape (S-shape), the effects of flow rate and mass loading on desalination performance were investigated in detail. The MRshaped channel showed a higher average salt removal rate than the R-shaped and S-shaped channels under the same operation conditions. Vortexes existing in the corners of R-shaped and S-shaped channels benefited from the charge transfer.

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Design shape of CDI cell applied with APSf and SPEEK and performance in MCDI

Cited by 18 publications

References 37 publications

Experimental and theoretical study of a new CDI device for the treatment of desulfurization wastewater

Experimental and theoretical study of a new CDI device for the treatment of desulfurization wastewater

Enhanced Charge Efficiency and Electrode Separation Utilizing Magnetic Carbon in Flow Electrode Capacitive Deionization

Novel Current Collector with Mosquito-Repellent Incense-Shaped Channel of Flow Electrode Capacitive Deionization

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