The adsorption process of the gold is a physical and reversible reaction, a weak bi-polar attraction between the negative gold-cyanide complex ions and the positively charged activated carbon particles.The gold cyanide ions are adsorbed under similar conditions as in leaching, i.e., using aeration, an alkaline cyanide environ at standard room temperature and pressure, but, with a relatively shorter process time of 16 – 24 hours. Since adsorption is a reversible process, shorter adsorption time and lower cyanide concentration should be maintained and practiced in order to minimize the dissolution of the gold from the loaded activated carbon back to the alkaline cyanide solution of the leach pulp.