Extraction of metals from disposed fragmented portable telephones by various leaching solution : Special issue on recycling and high performance waste processing

The extraction Au, Pd, Ag and Cu from electronic disposed portable telephone fragmented by explosive in water using several leaching solution was studied in this investigation. The metals extraction by three kinds of leaching solution, thiosulfate, iodine, and aqua regia, were compared. The best metals extraction was obtained from a 30 mass% aqua regia solution. The efficiency of metals extraction from the samples fragmented in different extents was compared with the 10 mass% aqua regia solution. The recovery of 91.97% Au, 97.69% Pd and 90.87% Cu could be achieved by a 30 mass% aqua regia solution at the retention of 54 h.