Related Experiment Video
Updated: Jan 22, 2026

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
Published on: May 2, 2025
An Easy-to-Use Tool for Modeling the Dynamics of Capacitive Deionization
Johan Nordstrand1, Karthik Laxman1, Myo Tay Zar Myint2
1Functional Materials, Applied Physics Department, SCI School , KTH Royal Institute of Technology , Isafjordsgatan 22 , Kista, SE-16440 Stockholm , Sweden.
Abstract:
Capacitive deionization is an emerging method of desalinating brackish water that has been presented as an alternative to the widely applied technologies such as reverse osmosis. However, for the technology to find more widespread use, it is important not only to improve its efficiency but also to make its modeling more accessible for researchers. In this work, a program has been developed and provided as an open-source with which a user can simulate the performance of a capacitive deionization system by simply entering the basic experimental conditions. The usefulness of this program was demonstrated by predicting how the effluent concentration in a continuous-mode constant-voltage operation varies with time, as well as how it depends on the flow rate, applied voltage, and inlet ion concentration. Finally, the generality of the program has been demonstrated using data from reports in the literature wherein various electrode materials, cell structures, and operational modes were used. Thus, we conclude that the model, termed the dynamic Langmuir model, could be an effective and simple tool for modeling the dynamics of capacitive deionization.
Related Concept Videos
Capacitors and Capacitance
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
Equivalent Capacitance
The following strategies are adopted to calculate...
Equivalent Capacitance
Capacitance: Single-Phase And Three-Phase Line
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...
Design Example: Capacitance Multiplier Circuit
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Dynamic Equilibrium

