Electrodialysis Phenomena Of Aqueous Solutions Containing Phosphoric Acid And Metal Ions

摘要

The electrodialysis phenomena of aqueous solutions containing phosphoric acid, Al and Mo ions were investigated in this study. A feasibility study of electrodialysis for treatment of waste phosphoric acid containing metal ions was also carried out. The desalination percentage of various ions shows different values through a kind of ion-exchange membrane. The voltage, solution concentration and feed temperature mainly affect electrodialysis of phosphoric acid containing Al and Mo ions. Higher voltage and feed temperature are beneficial for desalination of Al and Mo ions. At least 30% of Al ions and 7% of Mo ions can be removed from the phosphoric acid by using CMX/AMX, CM1/AM1 and CMX-SB/ACS ion-exchange membranes. The electrodialysis process seems to be a promising one for use in treatment of waste phosphoric acid containing Al and Mo ions.