D$16.$ An extractive distillation system $($Figure $8-13)$ is separating ethanol from water using ethylene glycol as the solvent. The makeup solvent stream is pure ethylene glycol. The feed flow rate is $100\mathrm{.}0$ kmo$\frac{l}{h}.$ The feed is $81\mathrm{.}0$mol$\%$ ethanol and $19\mathrm{.}0$mol$\%$ water. The ethanol product $($column $1$ distillate$)$ is $99\mathrm{.}70$mol$\%$ ethanol, $0\mathrm{.}02$mol$\%$ ethylene glycol, and the remainder is water. The water product $($column $2$ distillate$)$ should be $99\mathrm{.}90$mol$\%$ water, $0\mathrm{.}035$mol$\%$ ethylene glycol, and the remainder ethanol. Find the flow rates of the makeup solvent and the distillate from columns $1$ and $2.$

$($Ans: D$1=81\mathrm{.}23$kmo$\frac{l}{h},D2=18\mathrm{.}96$kmo$\frac{l}{h},M=0\mathrm{.}023$kmo$\frac{l}{h})$