1. Simultaneous removal efficiency of H2S and CO2 by high-gravity rotating packed bed: Experiments and simulation
- Author
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Quoc Toan Tran, Lien Thi Tran, Tuan Minh Le, Xuan Duy Le, Van Tan Lam, Manh Van Do, Tuan Minh Nguyen, and Minh Quan Pham
- Subjects
Packed bed ,Chemistry ,Hydrogen sulfide ,hydrogen sulfide ,carbon dioxide ,high-gravity rotating packed bed ,02 engineering and technology ,General Chemistry ,010501 environmental sciences ,01 natural sciences ,removal efficiency ,chemistry.chemical_compound ,biogas upgrading ,020401 chemical engineering ,Chemical engineering ,Carbon dioxide ,Materials Chemistry ,High Gravity ,0204 chemical engineering ,QD1-999 ,0105 earth and related environmental sciences - Abstract
This study explores the possibility of applying high-gravity rotating packed bed (HGRPB) in removing H2S and CO2 from biogas. Ca(OH)2 aqueous solution was used as the absorbent in this study. Different experimental conditions including solution pH, rotating speed (R S) of HGRPB, gas flow rate (Q G), and liquid flow rate (Q L) were investigated with respect to the removal efficiency (E) of H2S and CO2. The experimental and simulated results show that the optimal removal efficiency of H2S and CO2 using HGRPB achieved nearly the same as 99.38 and 99.56% for removal efficiency of H2S and 77.28 and 77.86% for removal efficiency of CO2, respectively. Such efficiencies corresponded with the following optimal conditions: a solution pH of 12.26, HGRPB reactor with the rotating speed of 1,200 rpm, the gas flow rate of 2.46 (L/min), and the liquid flow rate of 0.134 (L/min).
- Published
- 2021