Simultaneous removal efficiency of H 2 S and CO 2 by high-gravity rotating packed bed: Experiments and simulation

This study explores the possibility of applying high-gravity rotating packed bed (HGRPB) in removing H 2 S and CO 2 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...

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Bibliographic Details
Published in:Open Chemistry 2021-03, Vol.19 (1), p.288-298
Main Authors: Tran, Lien Thi, Le, Tuan Minh, Nguyen, Tuan Minh, Tran, Quoc Toan, Le, Xuan Duy, Pham, Minh Quan, Lam, Van Tan, Van Do, Manh
Format: Article
Language:English
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Summary:This study explores the possibility of applying high-gravity rotating packed bed (HGRPB) in removing H 2 S and CO 2 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 H 2 S and CO 2 . The experimental and simulated results show that the optimal removal efficiency of H 2 S and CO 2 using HGRPB achieved nearly the same as 99.38 and 99.56% for removal efficiency of H 2 S and 77.28 and 77.86% for removal efficiency of CO 2 , 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).
ISSN:2391-5420
2391-5420
DOI:10.1515/chem-2020-0187