Applicability of Adsorbents in Direct Air Capture (DAC): Recent Progress and Future Perspectives

Document Type

Article

Publication Date

2-1-2025

Abstract

Carbon capture, utilization, and storage (CCUS) has been considered as an approach to mitigate CO2 emissions to achieve a net-zero target as indicated in the Paris Climate Agreement. Nevertheless, over 50% of global CO2 emissions stem from distributed sources; the incorporation of negative emission technologies (NETs) is required. Direct air capture (DAC) is recognized as one of the feasible NETs offering flexibility in installation location. This review primarily focuses on the utilization of solid sorbents, which demonstrate lower energy consumption and higher CO2/N2 selectivity compared to alternative methods (cryogenic distillation and amine scrubbing). It provides a comprehensive analysis of the performance of nonporous and nanoporous adsorbents relevant to DAC applications. Among these, amine-appended adsorbents are the key for the DAC process due to the strong affinity between CO2 and amine at low partial pressure, as highlighted in the literature. Last but not least, the future direction and the practical feasibility of the sorbent-based DAC process will be discussed to allow more effective analysis of adsorbent performance, especially in the context of the repetitive adsorption/desorption cycling process.

Keywords

Carbon capture, Carbon capture and storage, Carbon capture and utilization, Carbon sequestration, Distillation, Low emission

Publication Title

Industrial & Engineering Chemistry Research

DOI

10.1021/acs.iecr.4c03265

Funders

National Research Foundation of Korea (BKP-FK-2024-02),Universiti Malaya (015LC0-562) ; (015ME0-360),Yayasan Universiti Teknologi PETRONAS (YUTP),Industrial & Engineering Chemistry Research (RS-2023-00219497)

Volume

64

Issue

8

First Page

4117

Last Page

4147

Publisher

American Chemical Society

Link to Full Text

Share

COinS