Enhancement of carbon dioxide capture by amine-modified rice husk mesoporous material
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Author list: Boonpoke A., Chiarakorn S., Laosiripojana N., Chidthaisong A.
Publisher: Wiley
Publication year: 2016
Journal: Environmental Progress & Sustainable Energy (1944-7442)
Volume number: 35
Issue number: 6
Start page: 1716
End page: 1723
Number of pages: 8
ISSN: 1944-7442
eISSN: 1944-7450
Languages: English-Great Britain (EN-GB)
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Abstract
Carbon dioxide capture and sequestration (CCS) has become a promising mitigation measure to reduce carbon dioxide (CO2) emissions from large stationary point sources. The CO2 capture process is the core limitation in terms of operating costs and energy consumption. To address this problem, this work aims to produce low cost solid sorbents for capturing CO2. Rice husk was used as a silica source for Mobil Composition of Matter No. 41 (MCM-41) synthesis (called R-MCM-41). To enhance the CO2 adsorption performance at a high temperature, polyethyleneimine (PEI), monoethanolamine (MEA), and aniline (ANL) were applied as modification reagents onto the R-MCM-41 surface. The adsorption test was conducted by using an adsorption column. The results indicated that the adsorption capacity of R-MCM-41 decreased with an increase in adsorption temperature. However, amine modification can enhance the adsorption capacity at high adsorption temperatures. Out of all the materials tested, the R-MCM-41 impregnated with 50 wt % of PEI provided the highest adsorption capacity at 1.70 mmol g−1. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1716–1723, 2016. © 2016 American Institute of Chemical Engineers Environ Prog
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