Abstract: A new method was established to detect the mass transfer rate of aromatic amino acids (Phe and Tyr) on the porous adsorbent. According to Boyd' s equation model, the effective interdiffusion coefficients of amino acids were determinated. The relationship between the adsorbent structure and the rates of diffusion of aromatic amino acids was studied. The effects of temperature and pHon the diffusion rate were also investigated.

Key words: Aromatic amino acids, Adsorption resins, Rate of diffusion