Activated carbon derived from bio-waste hemp hurd and retted hemp hurd for CO2 adsorption

Liu, Shan and Ge, Lei and Gao, Shuai and Zhuang, Linzhou and Zhu, Zhonghua and Wang, Hao (2017) Activated carbon derived from bio-waste hemp hurd and retted hemp hurd for CO2 adsorption. Composites Communications, 5. pp. 27-30. ISSN 2452-2139

Abstract

Hemp hurd is a bio-waste by-product with unique porous structure. The morphology and thermal properties of
original hemp hurd and retted hemp hurd were investigated before the carbonization. Then the biomass carbon
materials from hemp hurd and retted hemp hurd were activated by using CO2 or ZnCl2. The effect of physical
activation and chemical activation on the properties of derived carbon was compared. The obtained activated
carbons have been evaluated for CO2 capture. The results indicated that hemp hurd has different porous
structure in the cross section and longitudinal section. Retting process can further improve the thermal stability
of hemp hurd. The yield, specific surface area, porosity and gas adsorption properties of activated carbons by
ZnCl2 activation were superior than those of products from CO2 activation. By applying ZnCl2 activation, all the
activated carbons exhibited significant of micropores with the surface area exceeding 1100 m2/g. The activated
carbon derived from hemp hurd exhibited larger micropore and mesopore volumes than those derived from
retted hemp hurd. Enhanced CO2 adsorption capacity of activated carbons derived from retting process may be
attributed to the introduction of surface functionality.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 19 Dec 2017 04:38
Last Modified: 03 May 2018 04:49
Uncontrolled Keywords: activated carbon; adsorption; hemp hurd; retting process; porous structure; carbon dioxide capture
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090499 Chemical Engineering not elsewhere classified
09 Engineering > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power)
09 Engineering > 0906 Electrical and Electronic Engineering > 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
Identification Number or DOI: 10.1016/j.coco.2017.06.002
URI: http://eprints.usq.edu.au/id/eprint/33445

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