Device and method for separating materials

A device for separating materials in the form of particles and/or drops from a gas flow, the device comprising:

• an inlet for incoming air to be purified,
• a collection chamber having a cavity,
• an outlet for the purified air,
• a voltage source,
• a cylindrical fastening column to which ion yield tips have been coupled, wherein the ion yield tips are arranged directly on a surface of the cylindrical fastening column, and wherein the ion yield tips protrude from the surface of the cylindrical fastening column into the cavity of the collection chamber,
• the device is configured to direct high tension to the ion yield tips providing ion beams from the ion yield tips to a collection surface,
• the collection surface conducting electricity is electrically insulated from an outer wall of the collection chamber by an electrical insulation, and
• the device is configured to direct voltage of opposite sign to the ion yield tips than the voltage directed to the collection surface,
• wherein a diameter of the cylindrical fastening column is in a range between 80-120 mm and a ratio between the diameter of the cylindrical fastening column and a diameter of the collection chamber is 1:3, the voltage is in a range between 10-60 kV, and a current is in a range between 400-2300 μA.