Membrane Separation Processes Quiz

What is the permeation mechanism in dense nonporous polymeric membranes?

• Filtration

• Adsorption

• Condensation

• Solution diffusion

Which gas separation membranes show potential for CO2 removal?

• Palladium nanoparticle hydrogel polymers

• Polymeric gas separation membranes

• Ceramic membranes

• Hydrophobic microporous membranes

What is the mechanism of gas transport through Molecular Sieve Carbon (MSC) membranes?

• Selective adsorption and diffusion of larger molecules

• Enrichment of smaller molecules on high-pressure side

• Selective permeation based on size differences of gas molecules

• Surface diffusion for separation

What is the advantage of using Selective Surface Flow (SSF) membranes?

• Allows recovery of hydrogen without gas compression

• Enrichment of smaller molecules on high-pressure side

• Separates gases based on molecular size differences

• Operates under low pressure gradients

What is the gas separation application of the SSF membrane and PSA unit combo?

• Gas mixture separation

• Carbon dioxide removal

• Hydrogen recovery and purification

• Gas absorption

What factors affect the permeability of a membrane?

• Solubility and diffusivity of the gas in the membrane material

• Temperature changes

• Thickness of the membrane

• Feed side pressure

What is the selectivity of a dense polymer membrane?

• High permeance and low selectivity

• Low permeance and high selectivity

• High permeance and high selectivity

• Low permeance and low selectivity

What is the dual-mode sorption model used for?

• Increasing hydrogen solubility in polymers

• Accounting for sorption by both dissolution and Langmuir sorption

• Separating gases based on molecular size differences

• Enhancing selectivity of nanoparticle inclusion