Patent ID: 8343325
Filing Date: 2013-01-01
Classification: B01D

Abstract:
1. An electrodialysis apparatus comprising: a sample chamber including first and second dialysis membranes and filled with a sample between the first dialysis membrane and the second dialysis membrane; an anode chamber including an anode and filled with a chamber solution between the anode and the first dialysis membrane; and a cathode chamber including a cathode and filled with a chamber solution between the cathode and the second dialysis membrane, wherein, when a voltage is applied to the anode and the cathode, ionic materials of the sample move to the anode and cathode chambers and wherein the anode chamber and the cathode chamber are on opposite sides of the sample chamber and in direct contact with the sample chamber; and a control block that is operative to replace substantially an entirety of at least one of the chamber solution in the anode chamber and the chamber solution in the cathode chamber with new chamber solution if the ionic concentration of the anode chamber or the cathode chamber is higher than the reference ionic concentration.