SofTer: Theory, software, and video tutorial for simulating capacitive deionization with tertiary current distributions

Nordstrand, Johan

doi:10.1016/j.desal.2023.116899

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…Besides, the relationship between ion electromigration rate and current density follows the Faraday’s law as shown in eq : i = n F v i where i is the current density and v i is the ion electromigration rate in the FCDI device. In previous reports, some works have already developed comprehensive mathematical and simulating models to compute the desalination performance of CDI and FCDI systems. , Hence, in the present study, the finite element simulations were employed to investigate the influence of temperature on ion transfer through the potential and current density distributions within an isothermal-assisted FCDI system under different temperatures. In Figure a, it is observed that the potential distribution exhibited a declining trend with the raised temperature (0–50 °C).…”

Section: Resultsmentioning

confidence: 99%

“…In the general FCDI system, for the circumstance of the same potential difference, the ion transmembrane current i mem depends on the electrolyte conductivity σ mem within the membrane and membrane thickness d mem , as shown i eq . As the temperature increases, the amplified conductivity of electrolyte would enhance the ion transmembrane current i mem i mem = prefix− σ mem d mem false( Ø s − Ø l − ∇ Ø m false) …”

Section: Resultsmentioning

confidence: 99%

“…As the temperature increases, the amplified conductivity of electrolyte would enhance the ion transmembrane current i mem . 36…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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How Does Temperature Affect the Charge Transfer Process in Flow Electrode Capacitive Deionization?

Zhang,

Zhou,

Zhang

2024

Environ. Sci. Technol.

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In this study, we investigate how temperature variations, a key environmental factor, affect the charge transfer process in FCDI systems across seasonal variation and geographical distributions, which is crucial for optimizing FCDI performance but has not received adequate attention. Therefore, thermal-assisted FCDI systems were proposed by controlling the temperatures of the flow electrode and saline water to simulate the environmental conditions, and the temperature effects on the charge transport and desalting ability of FCDI were investigated. First, the isothermal mode was performed, where the flow electrode and saline water were controlled at the same temperatures (0–50 °C) to simulate the natural atmospheric temperature fluctuations and industrial circulating cooling water system. Experimental results showed a strong positive correlation between temperature and electrosorption dynamics. Elevated temperatures significantly improved ion electromigration and diffusion, thereby enhancing the electrosorption capacity of the FCDI device. On this basis, the nonisothermal mode was designed via maintaining the temperature of the flow electrode at 50 °C to improve the desalination performance of FCDI for saline water at different temperatures (0–50 °C). Finally, the East China seawater and industrial circulating cooling water were both desalted successfully to confirm the feasibility of the temperature field in the practical application of FCDI.

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