A quiescent body of water has a depth of 600 mm. The DO level at the bottom after 16 days is 3.5 mg/l when the surface is exposed to the atmosphere at a temperature of 25°C. Determine the DO of the water body. The saturated D0 at 25°C is 8.5 mg/l and the diffusion coefficient (kd) at 25°C is 2.5 x 103 mm?/s.

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Convective Mass Transfer between Phases

Mass transfer means the transport or movement of mass using streams, phases, components, and so on from one location to another.