題組內容

Problem 4(12%)
Diffusion through a dialysis membrane.
A dialysis process is designed to recover solute A from a solution of 0.02 M (c). The
end product contains A at the concentration of 0.003 M (c2). The membrane thickness
(L) is 61bfdb4b4e21f.jpg m, the distribution (partition) coefficient 61bfdb662fcd7.jpg is 0.7 and the effective
diffusivity of A in membrane 61bfdb7391c46.jpg is 61bfdb885f084.jpg m2/s. The mass transfer coefficients in
the solution on both sides of the membrane are 61bfdbaee70fd.jpg m/s and 61bfdbb9972bd.jpg
m/s. 61bfdbcb05062.jpg61bfdb3777a1d.jpg

(d) By increasing the mixing intensity of both liquid phases, we manage to increase the mass coefficients 61bfdc5c5e7f2.jpg to double their current values. What will be the percent increase in NA?