Table 2 Intensification achieved in RPB for CO₂ capture and absorbent regeneration compared to conventional packed columns

MEA

20–40 °C

1 atm

600–1000 rpm

• Reduction in absorber height of transfer unit by almost 13 times

• Enhanced mass transfer

• Stripper volume reduction

[34]

DETA, PZ, DEG

27 °C

1 atm

• 96.8% height of transfer unit reduction

[45]

MEA, DETA, PZ

50 °C

1600 rpm

• 22.7% regeneration energy reduction using 40.8 wt% MEA. Different configuration of RPB with packed bed were investigated

• 1.5 times RPB volume reduction to achieve similar performance with packed bed column

• RPB in series have 10.5% lower regeneration energy and 20.6% higher treated gas compared to single RPB

[46]

Potassium sarcosine

20–70 °C

1 atm

600–1400 rpm

• 2.6 times reduction in packing volume

• Possibility to treat large volume of flue gas within a smaller device

• 29 times increase in volumetric mass transfer coefficient

[52]