Acid recovery diffusion dialyzer

Product Description

Diffusion dialysis for waste acid recovery is different from electrodialysis in that it does not require additional direct current electric field, but only relies on the concentration difference of the solution on both sides of the membrane as a driving force. Ion exchange membrane diffusion dialysis is the use of ion exchange membrane selective permeability, this property to achieve material separation. Since the diffusion dialysis for waste acid recovery does not require an external electric field, the device eliminates the electrode chamber, making the device more simple. The advantage of the device is that it does not require external energy, but the disadvantage is that the separation speed is slow, which is caused by the diffusion coefficient of the solute is not large, and the general concentration difference is small.

The waste acid was recovered by anion exchange membrane, which was used as membrane diffusion dialysis method. The anion exchange membrane used was S-203 negative membrane, a non-crosslinked polysulfone quaternary ammonium negative membrane. In the 1980s, this method was used for the separation of rare earth elements and the recovery of hydrochloric acid, the diffusion dialysis for waste acid recovery for rare earth separation and recovery of hydrochloric acid, the dynamic diffusion principle of the membrane reactor device is similar to the structure of electrodialysis, but there is no electrode, the separator material is non-loop polypropylene braided net, this way is the use of rare earth acid and water countercurrent mode of operation, The results agree that acid and rare earth are basically completely separated.

Used in steel, foil, storage battery, hydrometallurgy, polysilicon, electroplating, graphite, rare earth and other non-ferrous metal smelting

And new energy anode materials.