Effective interfacial area and mass transfer coefficient were determined by the use of Danckwerts' plot method for chemical absorption system accompanied by first order reaction to elucidate the effect of shape and wet ability of packing materials on these parameters.
Liquid used in this experiment was $K_2CO_3-KHCO_3$ buffer solution. NaOCl was used to catalyze the first order reaction. Raschig Ring, Square, Sphere made of Ceramic, Poly Propylene, Glass, Stainless steel were used as packing materials.
The following correlations were proposed to predict the effective interfacial area and mass transfer coefficient.
$\begin{eqnarray*} a/a_t = 0.614 Re^{0.161} (\sigma_c/\sigma)^{0.119} (a_td_n(1-\epsilon)^{1/3})^{-1.01}$
$K_L = 0.0154 Re_f^{0.24} (\sigma_c/\sigma)^{0.48} (a_td_n)^{0.19} \end{eqnarray*}$
