Mass transfer characteristics of m-cresol,quinoline and 1-naphthol in a silica gel column

The mass transport characteristics of m-cresol, quinoline and 1-naphthol in a silica gel column were investigated. Model equations were obtained with linear isotherm, and the equilibrium constant and the overall mass transfer coefficient were also obtained with first two moments. The theoretical Chromatographic curves predicted by using above two parameters were in a good agreement with the experiment. Contribution of individual resistances on overall mass transfer resistances was estimated. The results showed that the contribution of the external mass transfer resistances was almost uniform but that of the axial dispersion was diminished as increasing the flow rates. In the most of the experimental regions the internal mass transfer resistances played a major role in the overall resistances.