Abstract: The liquid film diffusion mass transfer of adsorption of AuCl₄^- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied. The results, deviated from the theoretical formula proposed by James J. Car-berry, show that the mass transfer coefficient K_f is in proportion to v^7.4(v is kinematic viscosity) and the thickness of the film a is much larger than the diameter of the resin. The above results are discussed and two general empirical equations for expressing K_fand σ are suggested.

Key words: Liquid film thickness, Liquid film diffusion, Macroporous adsorption resin