$(25\%)$ Name a zeolite membrane that could be suitable to separate Krypton from Xenon, and olefins from

$"$ paraffins. Clearly explain why, and mention which separation mechanisms can be potentially involved.

$(25\%)$ Which are the main challenges that need to be overcome to potentially see these type of membranes operating at industrial$-$like conditions?

$(50\%)$ A zeolite membrane is used to remove $CO2$ from natural gas consisting mainly of $CO2-CH4$ stream. The feed consists of $13\%$molCO, and a feed pressure of $\frac{1\mathrm{.}1}{b}ar.$ The permeate side operates at $\frac{0\mathrm{.}22}{b}ar,$ and contains only $9\%$ mol of $CO2.$ The retentate $($residue$)$ consists of $97\mathrm{.}9\%$ mol $CH4.$ The volumetric rate in the permeate side is $70m\frac{3}{s},$ and $CO2$ permeance is $3\mathrm{.}3510-7mo\frac{l}{m}2$sPa. Consider the $CO2$ molar volume as $22\mathrm{.}410-3m\frac{3}{m}ol.$

Using the Hogsett & Mazur approach $($look for this equation in a separation textbook or another textbook$),$ calculate:

$($a$)(10\%)$ CO$2$ permeate flow rate $(mo\frac{l}{s}$

$($b$)(30\%)$ Membrane area $($m$2)$

$($c$)(10\%)$ What is the main difference between this approach and the average driving approach? In other words, what is the main assumption for the Hogsett & Mazur approach?