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World Environmental and Water Resources Congress 2020 - Small-Signal Modeling and Analysis of Electrodialysis Module Used for Desalination Processes by Moazeni, Faegheh; Bathi, Jejal Reddy is a scholarly article available to read on EtoBox.

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The available mathematical models of electrodialysis (ED) units are derived based on steadystate mass balance equations and solved with numerical methods. However, a dynamic model has never been developed before. This paper develops a small-signal model of a multicell stack ED based on state-space approach to study the effects of input salt concentration, feeding flow rate, and cell number on performance of the system. Desalination of saline water by electrodialysis is modeled based on separation of sodium ions. Dynamic models of mass balance equations with time-varying salt concentration gradient, varied with time, are considered in the modeling procedure. A 10-cell stack ED module with 9 cm 2 of effective surface area is modeled to purify a feed stream containing 100 g/L of sodium chloride at the rate of 0.04 m/s.

Author

Moazeni, Faegheh; Bathi, Jejal Reddy

Publisher

American Society of Civil Engineers

Published

2020

Language

EN

ISBN

9780784482940