Dear student
The artificial kidney functions on the same principle as the normal kidney and the procedure is called dialysis.
Dialysis machine is the artificial kidney machine. An artificial kidney machine may be employed in order to get rid of metabolic wastes from blood.
In dialysis machine, compressed air is used to aspirate the chemicals and deliver them to the tank. That is, using compressed air dry chemicals are transferred to the dialysis tank. As all medical facilities need to clean equipment in sterile environments compressed air meets with this requirement also.
regards