Adsorption

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