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25-03-2024 | Research

Breakthrough analysis on selective adsorption of CO2 from biogas by polyethylenimine-impregnated resins

Authors: Haiyan Yang, Yue Gong, Xinzhong Wang, Yuanyuan Chen, Dajiang Yu

Published in: Colloid and Polymer Science

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Abstract

Polymer resin-based solid amine are prospective adsorbents used in removing CO2 from biogas. Two commercial resins with different porous structures, AB-8 and ADS-17, were selected as supports to explore the influence of the support structures on adsorbent performance. It was discovered that macroporous channels greatly boost CO2 adsorption at higher PEI loadings (≥ 30%), and their influence is more critical than total pore volume or specific surface area, though their impact is minimal at low PEI loadings. ADS-17-40% PEI demonstrated outstanding CO2 adsorption of 208 mg·g−1 in its 16th cycle under specific operating conditions. Increasing gas flow rate to 200 mL·min−1 could promote CO2 adsorption capacity and initial adsorption rate constant (k0) calculated by the deactivation model. The highest adsorption capacity was achieved at 55 °C, when the temperature ranged from 25 to 90 °C.

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Literature
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26.
Metadata
Title
Breakthrough analysis on selective adsorption of CO2 from biogas by polyethylenimine-impregnated resins
Authors
Haiyan Yang
Yue Gong
Xinzhong Wang
Yuanyuan Chen
Dajiang Yu
Publication date
25-03-2024
Publisher
Springer Berlin Heidelberg
Published in
Colloid and Polymer Science
Print ISSN: 0303-402X
Electronic ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-024-05234-1

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