چكيده به لاتين
Capacitive deionization technology is a promising process for the desalination of seawater. In this method, salt ions in brackish water are removed by passing through two porous electrodes. In fact, by applying a voltage difference between these electrodes, the positive and negative ions go toward the desired electrodes and accumulate in the electrostatic double layer and temporarily remain inactive there. Under such conditions, salty water is converted into salt-free water. One of the most important advantages of this technology is reducing energy consumption and reducing environmental impacts. The most important challenge this technology faces is the commercialization of the system, with a number of suggestions to improve it. Capacitive deionization operations are carried out in two modes: single-pass and 2-batch mode. At once, the water passes through the CDI cell only once, but in a batch mode, the volume of the water is regularly restored to a stable state. In this study, the transient behavior of a capacitive deionization cell is modeled in a batch mode. The process is investigated and modeled based on mass and charge conservation equations, discarding Faraday's reactions and electrical resistance and modified donnan model in micropores, and a dynamic ion transport model in the spacer area. Finally, to validate model, calculated data is compared with the presented experimental data by Zhao and Porada.