An ideal PFR or an ideal CFSTR may be used to degrade a pollutant with first order reaction kinetics. Both the reactors are fed with the same inlet concentration and the same volumetric flow rate, and are designed to achieve the same outlet concentration. Which of the following statements is true when comparing PFR with CFSTR?
PFR is Plug Flow Reactor.
CFSTR is Continuous Flow Stirred Tank Reactor $\text{(also referred to as CSTR)}$.
- PFR will always require less reactor volume than CFSTR.
- PFR will require the same reactor volume as CFSTR.
- CFSTR will always require less reactor volume than PFR.
- CFSTR can sometimes require less reactor volume than PFR.
