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Dept. of Environmental Engineering
National Cheng Kung University
Countercurrent packed column: maximizes driving force, because it brings the least concentrated outlet gas into contact with fresh absorbing liquid
However, it plugs rapidly when appreciable particulates are present.
i: component i, f: fugacity, v: vapor, L: liquid
5.4.1 Steady-State Molecular Diffusion
5.5 The Whitman Two-Film Theory diffusing through a stagnant layer of B, thus .
6.1 General Considerations
To remove a dilute concentration VOC from an air emission with a dilute absorbing solution