0600953 - ÚCHP 2025 CZ eng A - Abstract
Schneider, J. - Moško, Jaroslav - Pohořelý, Michael - Friess, K.
STUDY OF THE IMPACT OF AMINE MODIFICATION OF BIOCHAR FOR SELECTIVE CO2 ADSORPTION.
Book of Abstracts. Prague: Czech Membrane Platform, 2024. s. 62. ISBN 978-80-908781-4-3.
[NETWORK YOUNG MEMBRAINS MEETING 2024. 04.09.2024-06.09.2024, Prague]
Institutional support: RVO:67985858
Keywords : biochar * adsorption * carbon dioxide
OECD category: Environmental sciences (social aspects to be 5.7)
Result website:
https://euromembrane2024.cz/nym/

In this study, we report the modifications of biochar with monoethanolamine and N-methyldiethanolamine, respectively, and their effect on gas sorption properties at 300 K and 315 K from 1 to 7 bar. The studied gases were CO2, CH4, N2, O2, C3H6, C3H8, and C4H10. The unmodified material
showed high sorption for all gases, especially for CH4 at both temperatures. The modified materials exhibited a decrease in sorption for all gases, with the exception of CO2 at 300 K, which significantly exceeded that of CH4, shifting the separation factor for CH4/CO2. At 315 K, both modified materials
showed a rapid decrease in CO2 sorption, while the sorption of other gases remained stable. This confirms that the modified materials’ sorption of CO2 was driven by the interaction of CO2 with the NH2 groups, which is exothermic.
Permanent Link: https://hdl.handle.net/11104/0358206