Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)

Porous carbons from hydrothermal carbonization of corn stover for highly efficient CO2 capture

Authors
Xinhua Qi, Yu Wang, Feng Shen
Corresponding Author
Xinhua Qi
Available Online April 2017.
DOI
https://doi.org/10.2991/iceesd-17.2017.92How to use a DOI?
Keywords
Corn stover; Activated carbon; CO2 capture; Hydrothermal carbonization; Agricultural waste; Biomass
Abstract
Sustainable biomass-derived carbon materials were produced by hydrothermal carbonization of corn stover that was followed by chemical activation with KOH. The prepared carbon materials were used for CO2 adsorption, and had a CO2 uptake of 7.14 mmol/g at a pressure of 1 bar and at 0 oC that was much higher than CO2 uptake by activated carbon that was prepared from direct activation of corn stover (2.78 mmol/g). The porous corn stover-derived carbonaceous material had high surface area (2442 m2/g) and large pore volume (1.55 cm3/g). Product yields obtained by activation of hydrothermally carbonized corn stover were significantly higher than that by the direct activation of corn stover (36-75% VS. 8%). The prepared corn stover-derived porous carbon had a high CO2/N2 selectivity of 15.5, and exhibited constant CO2 uptake for five successive reuse cycles. The hydrothermal carbonization step plays important role for producing porous carbons from biomass that have high and specific adsorption properties.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
Part of series
Advances in Engineering Research
Publication Date
April 2017
ISBN
978-94-6252-328-9
ISSN
2352-5401
DOI
https://doi.org/10.2991/iceesd-17.2017.92How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Xinhua Qi
AU  - Yu Wang
AU  - Feng Shen
PY  - 2017/04
DA  - 2017/04
TI  - Porous carbons from hydrothermal carbonization of corn stover for highly efficient CO2 capture
PB  - Atlantis Press
SP  - 487
EP  - 495
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-17.2017.92
DO  - https://doi.org/10.2991/iceesd-17.2017.92
ID  - Qi2017/04
ER  -