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Lookup NU author(s): Rouzbeh Jamei, Dr Jonathan McDonough, Emeritus Dr David Reay, Dr Vladimir Zivkovic
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Carbon capture (CC) will play a predominant role in decarbonising the energy, industry, and transportation sectors in the short to medium timeframes to meet the 2050 Net Zero target. Adsorption is a promising CC technology that uses solid-adsorbents rather than liquid-absorbents to strip CO2 from flue gas streams. In this study we developed a small-scale platform for screening CO2 adsorbents that uses a 3D-printed toroidal fluidised bed (TORBED) reactor to intensify gas–solid mixing. Here we tested the performance of a commercial sorbent (based on branched polyethyleneimine, BPEI) for capturing CO2 from artificial flue gas streams comprised of different N2/CO2 mixtures. Breakthrough curves were subsequently collected for a variety of CO2 volume fractions (2–20 vol%), BPEI bed loads (1–2.5 g), gas flow rates (20–35 L/min), and temperatures (40–70 °C). A high sorbent capacity of 2.64 ± 0.06 mmol/g was observed in the TORBED in experiments lasting no more than 10 s. The rapid speed in which the data were collected represents the potential for high throughput screening. By monitoring the bed temperature during each experiment, we also inferred that the high heat transfer rates in the mini-TORBED minimises the heat of adsorption influence of the kinetics.
Author(s): Jamei R, McDonough JR, Reay DA, Zivkovic V
Publication type: Article
Publication status: Published
Journal: Chemical Engineering Journal
Year: 2022
Volume: 451
Issue: 2
Online publication date: 08/08/2022
Acceptance date: 26/07/2022
Date deposited: 23/08/2022
ISSN (electronic): 1385-8947
Publisher: Elsevier
URL: https://doi.org/10.1016/j.cej.2022.138405
DOI: 10.1016/j.cej.2022.138405
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