The potentialities of a membrane condenser for
the selective recovery of evaporated wastewater from industrial gases
have been investigated in the present paper. Membrane modules have
been prepared and their performance has been evaluated in an artificial
flue gas stream. A simulation study of the process has been carried
out for predicting the membrane-based process performance. The achieved
results indicate that a 20% water recovery (the amount to make the
plant self-sufficient) can be achieved with temperature reductions
less than 5 °C if flue gas is in common conditions (i.e., 50
°C < T < 90 °C and 90% < RH <
100%). To verify the results achieved by the simulation analysis a
membrane module with microporous hydrophobic PVDF hollow fibers has
been built, and its performance has been evaluated by feeding an artificial
flue gas stream. The experimental results showed good agreement with
the simulation ones, obtaining deviations less than 2.24%.
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