Mass-transfer data at different feed and steam rates, using structured and random packings,
have been collected to develop a model for the design or analysis of packed columns for stripping
of volatile organic compounds (VOCs) from water. The steam-stripping experiments were
conducted in a stainless steel column of 0.245-m internal diameter, with 2.8 m of packed section.
The packings used were Sulzer BX gauze structured packing, Mellapak 250Y structured packing,
1-in. Flexirings, and 1-in. Fleximax random packing. The VOCs were chloroform (CH3Cl) and
toluene (C7H8). The model considers the simultaneous occurrence of mass transfer and hydraulic
phenomena with the same expressions for liquid and vapor mass-transfer coefficients and the
same expression for effective interfacial area with one constant for each packing. The average
deviation for the measured and calculated volumetric mass-transfer coefficient and effective
height of packing is 0.29 and 0.23, respectively.
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