THE MEDICAL PERFORMANCE OF PITCH-BASED SPHERICAL ACTIVATED CARBON

The basic structural parameters of pitch based spherical activated carbon (PSAC) were characterized, such as specific surface area by BET model, total pore volume, micropore and mesopore volume, sphericity, hardness and content of heavy metal ions. Its adsorption capacity to creatinine and vitamin B 12 , which are typical small and medium toxic molecules in blood, were measured. Hemolysis ratio, number of particles released, pyrexic source and germ count in a man made kidney made of PSAC were checked. The results showed that PSAC had many excellent properties such as high hardness, large adsorption range, good adsorbing ability to typical toxic molecules in blood, low content of heavy metal ions, low hemolysis ratio, few released particles and no pyrexic source and germs. Satisfactory results have been obtained in clinical experiments for blood purification, which show that PSAC can be used as an adsorbent for a man made kidney.