An Easy-to-Use Tool for Modeling the Dynamics of Capacitive Deionization

Johan Nordstrand, Karthik Laxman, Myo Tay Zar Myint, Joydeep Dutta*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)6628-6634
Number of pages7
JournalJournal of Physical Chemistry A
Issue number30
Publication statusPublished - Aug 1 2019

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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