Biogas Upgrading via Cyclic CO2 Adsorption: Application of Highly Regenerable PEI@nano-Al2O3 Adsorbents with Anti-Urea Properties

Shen, Xuehua; Yan, Feng; Li, Chunyan; Qu, Fan; Wang, Yingqing; Zhang, Zuotai

doi:10.1021/acs.est.0c07973

Public

Biogas Upgrading via Cyclic CO2 Adsorption: Application of Highly Regenerable PEI@nano-Al2O3 Adsorbents with Anti-Urea Properties

Published in Environmental Science & Technology • Mar 29, 2021

Authors:

Xuehua Shen

Feng Yan

Chunyan Li

Abstract

Solid amine adsorbents are among the most promising CO 2 adsorption technologies for biogas upgrading due to their high selectivity toward CO 2, low energy consumption, and easy regeneration. However, in most cases, these adsorbents undergo severe chemical inactivation due to urea formation when reg...

Subject

Adsorption

Polyethylenimine

Amine gas treating

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