MASS-TRANSFER COEFFICIENTS FOR ABSORPTION OF O-2, CO2 AND SO2 IN AQUEOUS-SOLUTIONS OF VARIOUS VISCOSITIES AND SURFACE TENSIONS

Coefficients of mass transfer relative to the liquid phase, k(L), were determined for the absorption of O-2 in water and aqueous sugar solut ions of various concentrations with and without sodium lauryl sulphate . The contact system was a cylinder packed with balls and rods of know n gas-liquid interface area. The measured values of k(L) were compared with those previously obtained for absorption of CO2 and SO2 under th e same conditions. This study of the absorption of three gases of wide ly differing solubilities shows that k(L) depends on the flow rate, vi scosity, surface tension and hydrodynamics of the liquid phase more th an on the nature of gas absorbed. The whole data set for all three gas es and all operating conditions is adequately fitted by que equation S h = 5,68 . 10(-9) Re(2,00)Sc(1,35)We(-1)