A simple film theory model yielding a closed-form solution is presented for the analysis of isothermal gas absorption with a chemical reaction taking into account the effect of interfacial resistance. The analysis could be particularly important for a rational design of wet scrubbing systems for gaseous pollutant removal with impurities contaminating the gas-liquid interface. The film theory avoids time dependence and thus is much easier to apply than the penetration theory. The results obtained by the two different theories are in good agreement.
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