Direct air capture of CO2 by KOH-activated bamboo biochar.
In: Journal of the Energy Institute (Elsevier Science), Jg. 105 (2022-12-01), S. 399-405
academicJournal
Zugriff:
Direct air capture (DAC) of CO 2 is considered one of the most promising carbon capture methods to reduce ambient CO 2 concentration for climate change mitigation. Biochar represents an attractive adsorbent for DAC because it is environmentally friendly and cost-effective. In this work, KOH-activated bamboo biochar shows the CO 2 capture capacity of 3.49 mmol g −1 (25 °C, 1 bar), and it is used as an adsorbent to perform direct air capture using a fixed-bed reactor with an ambient CO 2 capture capacity of up to 51.74 μmol g −1 . Furthermore, the effect of relative humidity on CO 2 adsorption by biochar was investigated and exhibited promising stability under 2.7% relative humidity. However, the biochar activity for CO 2 capture is reduced to 63.88% under 67.1% humidity after 50 cycles. [Display omitted] • KOH was used to activate bamboo-derived biochar. • Bamboo biochar was investigated in direct air capture of CO 2. • Gas selectivity of biochar during direct air capture. • Effect of relative humidity on direct air capture efficiency. [ABSTRACT FROM AUTHOR]
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Titel: |
Direct air capture of CO2 by KOH-activated bamboo biochar.
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Autor/in / Beteiligte Person: | Zhang, Chen ; Sun, Shuzhuang ; He, Su ; Wu, Chunfei |
Zeitschrift: | Journal of the Energy Institute (Elsevier Science), Jg. 105 (2022-12-01), S. 399-405 |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 1743-9671 (print) |
DOI: | 10.1016/j.joei.2022.10.017 |
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