WITHDRAWN

The rising atmospheric CO2 concentration is one of the biggest challenges human civilization faces. Direct air capture (DAC) that directly removes CO2 from the atmosphere provides great potential in carbon neutralization. However, the massive land use and capital investment of centralized DAC plants and the energy-intensive process of adsorbent regeneration limit its wide employment. Here, we develop a distributed carbon nanofiber (CNF)-based DAC air filter capable of adsorbing CO2 downstream in ventilation systems. The DAC air filter not only has the potential to remove 596 MtCO2 yr−1 globally but can also decrease energy consumption in existing building systems. The CNF-based adsorbent has a capacity of 4 mmol/g and can be regenerated via solar thermal or electrothermal methods with low carbon footprints. Through life cycle assessment, the CNF air filter shows a carbon removal efficiency of 92.1% from cradle to grave. In addition, technoeconomic analysis estimates a cost of $276-745 in capturing and storing 1 MT of CO2 from direct air.

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Publication Details

Journal
ChemRxiv
Published
2025-09-01
DOI
https://doi.org/10.26434/chemrxiv-2025-br6lr
Primary Topic
Aerosol Filtration and Electrostatic Precipitation
Type
article
Field-Weighted Citation Impact
0.00

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article

WITHDRAWN

Gangbin Yan, Amar Ruthen, Hernan E. Delgado, Adarsh Suresh et al.
ChemRxiv
Aerosol Filtration and Electrostatic Precipitation
article

WITHDRAWN

Gangbin Yan, Amar Ruthen, Hernan E. Delgado, Adarsh Suresh, David B. Mitzi, Po‐Chun Hsu, Yuanke Chen, Genesis Higueros, Amgad Elgowainy, Yu Han, Chenxi Sui, Ronghui Wu, Yiyang Xie, Qizhang Li, Edward Luo, Chong Liu, Qibin Fan
article en

Abstract

The rising atmospheric CO2 concentration is one of the biggest challenges human civilization faces. Direct air capture (DAC) that directly removes CO2 from the atmosphere provides great potential in carbon neutralization. However, the massive land use and capital investment of centralized DAC plants and the energy-intensive process of adsorbent regeneration limit its wide employment. Here, we develop a distributed carbon nanofiber (CNF)-based DAC air filter capable of adsorbing CO2 downstream in ventilation systems. The DAC air filter not only has the potential to remove 596 MtCO2 yr−1 globally but can also decrease energy consumption in existing building systems. The CNF-based adsorbent has a capacity of 4 mmol/g and can be regenerated via solar thermal or electrothermal methods with low carbon footprints. Through life cycle assessment, the CNF air filter shows a carbon removal efficiency of 92.1% from cradle to grave. In addition, technoeconomic analysis estimates a cost of $276-745 in capturing and storing 1 MT of CO2 from direct air.

ChemRxiv
Argonne National Laboratory (US), Duke University (US), University of Chicago (US)
University of Chicago, Division of Materials Research
Openalex Percentile: Top 78%
Aerosol Filtration and Electrostatic Precipitation
DOIOpen Access PDFOpenAlex
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