Patent ID: 8512544
Filing Date: 2013-08-20
Classification: B01D,B01J,C02F,C22B,C25C,Y02P

Abstract:
1. A metal collection method comprising (i) applying a voltage between a plurality of first electrodes and a second electrode so that each of the first electrodes serves as a cathode, with the first and second electrodes being placed in contact with an adsorbent, thereby depositing a metal on a surface of the first electrodes; and (ii) separating in turn the first electrodes, on which the metal has been deposited, from the adsorbent, then collecting the metal from the surface of the first electrodes, and then returning the first electrodes to the adsorbent, wherein the adsorbent comprises a macromolecule, the macromolecule contains the same constitutional units as those contained in a macromolecule extracted from Aphanothece sacrum, and the step (i) is conducted in a state in which a solution containing an ion of the metal is in contact with the adsorbent.