In this work, a new correlation for the axial dispersion coefficient was obtained using experimental datain the literature for axial dispersion in fixed-bed columns packed with particles. The Chung and Wencorrelation, the De Ligny correlation are two popular empirical correlations. However, the former lacksthe molecular diffusion term and the latter does not consider bed voidage. The new axial dispersion coef-ficient correlation in this work was based on additional experimental data in the literature by consideringboth molecular diffusion and bed voidage. It is more comprehensive and accurate. The Peclet numbercorrelation from the new axial dispersion coefficient correlation on the average leads to 12% lower Pecletnumber values compared to the values from the Chung and Wen correlation, and in many cases muchsmaller than those from the De Ligny correlation.
