Lkpartnrent of Chemical Engineedng C. LAOHAVEHlTRA l%t Ohio State University K. MUROYAMA Cokmbns, OH 43210 SHU-HUAN WEZNG U.&u. LIANG-SHIH FAN' NOTATION concentration of A at the interface, g-mol/cm3 outside diameter of the wetted wall colthun, cm dil?usivity of A in the liquid phase, cm%% diffusivity 6f A in the gas phase, cm'/sec equivalent diameter of the annular space of the column, cm gravitational acceleration, cm/set* Henry's Law constant, cm3 atmlg-mol column heiit, cm end effect height, cm overall mass transfer coefficient, g-mol/sec cm2 atm gas lilm mass transfer coefscieat. g-mol/sec cm* atnt liquid 6bn mass transfer coefficient, cmlsec total molar concentration of Ca and Mg in the solution, g-ml/cm3 absorption rate of A per unit area (B-mohec cm3 Reynolds number = D,&PJ~ dimensionless Schmidt number = cd&&,,, dimensiodtss Shtrwtod number = k,hRflP)(D,,/D& (dimensionless) total pressure, atm logarithmic mean of pwg and p-for component A, afm logwitbmic mean of paia*t and pfor inert component B, atm *Author to whom correspondence should be addressed. CMcpl a*prrhs SC&ace VOL 31. NO. 10, pQ. m5-lsla 192 RiwdhGraori3Bia ges c4mstant, atm cm?g-mol K contact time, set absolute temperature, K mean gas velocity, cmlsec Volumetric flow rate of liquid, cm3/sec liquid viscosity, gicm set gas viscosity, &m see liquid density, g/cm3 gas density. g/cm' enhancement factor, dimensionless