8 questions
How adsorption process take place?
separation through liquid and gases
separation through solid
In adsorption from liquid process, choose what type of adsorbent usually use in this unit.
Carbon
Zeolite
Silica
Activated carbon
Definition of irreversible adsorption.
Amount of adsorbed is proportional to the concentration in the fluid.
low solid loadings are obtained and because it leads to quite long mass-transfer zones in the bed.
Amount of adsorbed is independent of concentration down to very low values
Choose the correct type of adsorption
liquid sorption
ion exchange
chemisorption
Physisorption
Properties of good adsorbent
granular
porous material
high surface area to unit mass
high unit mass to surface area
Choose importance of regeneration to adsorbent.
removal of adsorbent
removal of unknown particles
removal of adsorbates
reduce activation energy of reaction
Define adsorption isotherm.
equilibrium relationship between the concentration in the fluid phase and the concentration in the adsorbate particles
equilibrium relationship between the concentration in the fluid phase and the concentration in the adsorbent particles
equilibrium relationship between the concentration in the gas phase and the concentration in the adsorbent particles
equilibrium relationship between the concentration in the gas phase and the concentration in the adsorbate particles
Identify type of adsorber based on the figure above.
Gas-drying equipment
Vapor phase adsorption
Pressure swing adsorption
Fixed bed adsorber