Device and method for the electrodeionization of a liquid

A device (1) for electrodeionization of a sample liquid comprising:

• an anode chamber (10) comprising two openings (11, 12) and an anode (13);
• a cathode chamber (20) comprising two openings (21, 22) and a cathode (23);
• a treatment chamber (30) located between the anode chamber (10) and the cathode chamber (20) comprising two openings (31, 32) and ion exchanger, wherein the anode chamber (10) and the cathode chamber (20) are in each case separated from the treatment chamber (30) by a permselective membrane (33);
• and
• an energy source (40) operatively connected to the anode (13) and the cathode (23);
• wherein
• one of the openings (31;
• 32) of the treatment chamber (30), the openings (11, 12) of the anode chamber (10) and one of the openings (21;
• 22) of the cathode chamber (20) are connected to each other such that the treatment chamber (30) is operatively connected to the anode chamber (10) and the anode chamber (10) is operatively connected to the cathode chamber (20).

Method for the electrodeionization of a sample liquid, comprising the steps of:

• applying a voltage to an anode (13) and cathode (23) spatially separated from each other by two permselective membranes (33a, 33b);
• the at least partial flow of the sample liquid through a treatment chamber (30) which is at least partially filled with ion exchangers and is bounded by the two permselective membranes (33a, 33b);
• then
• the at least partial flow of the sample liquid through an anode chamber (10), which is arranged between the anode (13) and one of the permselective membranes (33a);
• then
• the at least partial flow of the sample liquid through a cathode chamber (20), which is arranged between the cathode (23) and the other permselective membrane (33a).

Method for the electrodeionization of a sample liquid, comprising the steps of:

• applying a voltage to an anode (13) and cathode (23) spatially separated from each other by two permselective membranes (33a, 33b);
• the at least partial flow of the sample liquid through a treatment chamber (30) which is at least partially filled with ion exchangers and is bounded by the two permselective membranes (33a, 33b);
• then
• the at least partial flow of the sample liquid through a cathode chamber (20), which is arranged between the cathode (23) and the other permselective membrane (33b);
• the at least partial flow of the sample liquid through an anode chamber (10), which is arranged between the anode (13) and one of the permselective membranes (33a).