The adsorption kinetics of cephalosporin-c on non-ionic polymeric macropore Amberlite XAD-16 resin

The adsorption kinetics of cephalosporin-c (CPC) on non-ionic polymeric mac ropore Amberlite XAD-16 resin were investigated in a well-stirred tank. The 'half-time' and non-linear methods were used to derive the intraparticle d iffusivities from the experimentally determined adsorption uptake curves. I t was found that both pore and solid surface diffusion processes made signi ficant contributions, in parallel, to the intraparticle mass transfer. It w as also found that the CPC concentration had an effect on the effective por e and surface diffusivities. The results are relevant to the mathematical m odelling of adsorption processes. (C) 1999 Society of Chemical Industry.