A study on modeling and simulation of capacitive deionization process for wastewater treatment

Wastewater treatment is an important issue in the era when water resources are continuously decreasing world-wide in the face of increasing demand. The need for cheap and energy efficient wastewater utilization technologies is thus drawing continuous attention. Capacitive Deionization (CDI) was recently proposed as a novel alternative replacing for the conventional membrane methodologies. This paper is concerned with simulation of the separating saline from the wastewater effectively using CDI. After actual experiments of CDI to assess their basic behaviors, their behaviors are mathematically formulated and its associated parameters are identified accordingly. The corresponding model is implemented in Matlab simulink to show how it can be operated in preparation for the wider applications. The proposed simulation framework could be further expanded to evaluate the performance in terms of economical feasibility against other separation methods. (C) 2010 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.