|
Advantages
|
Disadvantages
|
|
|
|
|
Less expensive than GAC on a per-pound
basis
|
Difficult to reactivate due to heavy processing losses
|
|
PAC-based systems
have less expensive initial set-up
|
Lower initial cost can be offset by
replacement costs
|
|
Open pore structure & smaller
particle size promote rapid adsorption and settling (in liquid phase
applications)
|
Smaller pore structure not amenable to
some gas phase applications (e.g., air filters)
|
|
Can be injected at varying dosages
quickly & easily
|
Requires special dosage & storage
equipment
|
|
|
|
