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Green CH4 production in MSW Incineration Plant : Simultaneous absorption of CO2 and H2S from biogas by deep eutectic solvent

Yan, Mi ; Wang, Dan ; Ding, Hao ; Hu, Xiaojuan ; Song, Yucai ; Xu, Aiming ; Kanchanatip, Ekkachai ; Zhang, Yan LU and Wibowo, Haryo LU (2025) In Separation and Purification Technology 369.
Abstract

To address the critical need for efficient biogas upgrading, this study systematically investigates the continuous absorption of CO2 and H2S from biogas using a choline chloride-monoethanolamine deep eutectic solvent (ChCl-MEA DES). Experiments were conducted in a continuous flow reactor under two scenarios: single-component absorption and simultaneous absorption of CO2 and H2S. The influence of key operational parameters, including gas flow rate, water content, and temperature, on the absorption capacity and selectivity for CO2 and H2S was comprehensively evaluated. The findings revealed that ChCl-MEA DES exhibited both physical and chemical absorption mechanisms for... (More)

To address the critical need for efficient biogas upgrading, this study systematically investigates the continuous absorption of CO2 and H2S from biogas using a choline chloride-monoethanolamine deep eutectic solvent (ChCl-MEA DES). Experiments were conducted in a continuous flow reactor under two scenarios: single-component absorption and simultaneous absorption of CO2 and H2S. The influence of key operational parameters, including gas flow rate, water content, and temperature, on the absorption capacity and selectivity for CO2 and H2S was comprehensively evaluated. The findings revealed that ChCl-MEA DES exhibited both physical and chemical absorption mechanisms for CO2 and H2S. The best gas adsorption performance was achieved under conditions of 75 vol% water content, gas flow rate of 20 mL/min, and temperature of 20 °C. The absorption mechanisms of H2S were systematically investigated using Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), Grand Canonical Monte Carlo (GCMC) simulations and Density functional theory (DFT) calculations. The regeneration cycle experiment demonstrated that ChCl-MEA DES (75 vol% water) exhibited good regeneration performance.

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Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Absorption mechanism, Biogas upgrading, Deep eutectic solvent, Municipal solid waste, Regeneration performance
in
Separation and Purification Technology
volume
369
article number
133188
publisher
Elsevier
external identifiers
  • scopus:105003416857
ISSN
1383-5866
DOI
10.1016/j.seppur.2025.133188
language
English
LU publication?
yes
id
eb076edc-12b7-4d33-a25e-b1706bb2b50c
date added to LUP
2025-07-18 08:22:50
date last changed
2025-07-18 08:23:55
@article{eb076edc-12b7-4d33-a25e-b1706bb2b50c,
  abstract     = {{<p>To address the critical need for efficient biogas upgrading, this study systematically investigates the continuous absorption of CO<sub>2</sub> and H<sub>2</sub>S from biogas using a choline chloride-monoethanolamine deep eutectic solvent (ChCl-MEA DES). Experiments were conducted in a continuous flow reactor under two scenarios: single-component absorption and simultaneous absorption of CO<sub>2</sub> and H<sub>2</sub>S. The influence of key operational parameters, including gas flow rate, water content, and temperature, on the absorption capacity and selectivity for CO<sub>2</sub> and H<sub>2</sub>S was comprehensively evaluated. The findings revealed that ChCl-MEA DES exhibited both physical and chemical absorption mechanisms for CO<sub>2</sub> and H<sub>2</sub>S. The best gas adsorption performance was achieved under conditions of 75 vol% water content, gas flow rate of 20 mL/min, and temperature of 20 °C. The absorption mechanisms of H<sub>2</sub>S were systematically investigated using Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), Grand Canonical Monte Carlo (GCMC) simulations and Density functional theory (DFT) calculations. The regeneration cycle experiment demonstrated that ChCl-MEA DES (75 vol% water) exhibited good regeneration performance.</p>}},
  author       = {{Yan, Mi and Wang, Dan and Ding, Hao and Hu, Xiaojuan and Song, Yucai and Xu, Aiming and Kanchanatip, Ekkachai and Zhang, Yan and Wibowo, Haryo}},
  issn         = {{1383-5866}},
  keywords     = {{Absorption mechanism; Biogas upgrading; Deep eutectic solvent; Municipal solid waste; Regeneration performance}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Separation and Purification Technology}},
  title        = {{Green CH<sub>4</sub> production in MSW Incineration Plant : Simultaneous absorption of CO<sub>2</sub> and H<sub>2</sub>S from biogas by deep eutectic solvent}},
  url          = {{http://dx.doi.org/10.1016/j.seppur.2025.133188}},
  doi          = {{10.1016/j.seppur.2025.133188}},
  volume       = {{369}},
  year         = {{2025}},
}