Ion Exchange Description

Although some ion exchange media occur naturally, this process normally uses specially formulated resins with an

Q Anion ^^Cation

A - Anion permeable membrane C - Cation permeable membrane

FIG. 11.15.7 Electrodialysis. An electric current concentrates the dissolved ions in compartments adjacent to those between the electrodes.

Q Anion ^^Cation

A - Anion permeable membrane C - Cation permeable membrane

FIG. 11.15.7 Electrodialysis. An electric current concentrates the dissolved ions in compartments adjacent to those between the electrodes.

electrical potential is applied across the membrane to provide the motive force for ion migration. The ion-selective membranes are thin sheets of ion exchange resins reinforced by a synthetic fiber backing.

0 0

Post a comment