Iron removal from brackish water by electrodialysis

Environ Technol. 2013 Sep-Oct;34(17-20):2521-9. doi: 10.1080/09593330.2013.777081.

Abstract

The aim of this work is to study the removal of iron from brackish water using electrodialysis (ED). Experiments were carried out on synthetic brackish water solutions using a laboratory-scale ED cell. The influence of several parameters on process efficiency was studied. This efficiency is expressed by the removal rate, transport flux, current efficiency and power consumption. The applied voltage, the feed flow rate, the pH and iron initial concentration ofthe feed solution have a significant effect on the process efficiency and mainly on the iron transfer from dilute to concentrate compartment. Nevertheless, feed ionic strength does not have an effect on the iron removal. However, the effect is only noted on the specific power consumption.

MeSH terms

  • Electrochemical Techniques / methods*
  • Hydrogen-Ion Concentration
  • Iron / isolation & purification*
  • Water Pollutants, Chemical / isolation & purification*
  • Water Purification / methods*

Substances

  • Water Pollutants, Chemical
  • Iron