2. Experimental
Leaching WPBs was conducted by hydrochloric acid (HCl) at
bench scale. The samples of WPBs were achieved from Hunan Dibo
pharmaceuticals Co., Ltd, PR China, containing 14 wt% aluminum
and 86 wt% PVC plastics. The WPBs samples were cut into pieces of
1 cm 2 cm. The hydrochloric acid used to leach WPBs was of
reagent grade and used as received. Spectrophotometric analysis
and Fourier transform infrared were employed for obtaining
leaching rate of Al and analysis of separated PVC plastic.