The 1mol/L HCl solution can desorbed the Pb~(2+) and Cu~(2+) from the EPS derivative, and the desorption rate is 75.8% for Pb~(2+) and 95.6% for Cu~(2+).

• 用1mol/L的HCl溶液能将pb~(2+)和Cu~(2+)解吸下来，解吸率分别为75.；8%25和95