Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons

Kong, JJ; Yue, QY; Zhao, P; Gao, BY; Li, Q; Wang, Y; Ngo, HH; Guo, WS

Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons

Kong, JJ Yue, QY Zhao, P Gao, BY Li, Q Wang, Y Ngo, HH

Guo, WS

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Publication Type:: Journal Article
Citation:: Fuel Processing Technology, 2015, 140 pp. 67 - 75
Issue Date:: 2015-12-11

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Field	Value	Language
dc.contributor.author	Kong, JJ	en_US
dc.contributor.author	Yue, QY	en_US
dc.contributor.author	Zhao, P	en_US
dc.contributor.author	Gao, BY	en_US
dc.contributor.author	Li, Q	en_US
dc.contributor.author	Wang, Y	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, WS https://orcid.org/0000-0001-5542-2858	en_US
dc.date.available	2020-05-25T19:25:29Z
dc.date.issued	2015-12-11	en_US
dc.identifier.citation	Fuel Processing Technology, 2015, 140 pp. 67 - 75	en_US
dc.identifier.issn	0378-3820	en_US
dc.identifier.uri	http://hdl.handle.net/10453/37624
dc.description.abstract	© 2015 Elsevier B.V. All rights reserved. The paper probed the preparation of activated carbon by potassium silicate (K<inf>2</inf>SiO<inf>3</inf>) activation from keratin waste (cowhair waste, CW) and lignocellulosic materials (Cyperus alternifolius, CA) and the comparisons of physicochemical properties of the resulting carbons. These impregnation conditions were as follows: one impregnated at room temperature for 12 h then dipped at high temperature for 30 min; the other was only impregnated at room temperature for 12 h, producing four activated carbons CWAC-1, CWAC-2, CAAC-1, and CAAC-2. The influence of activation time, K<inf>2</inf>SiO<inf>3</inf>/precursor weight ratio, and the pre-process on properties of activated carbons was discussed. The CWAC-1 produced at 700°C with the K<inf>2</inf>SiO<inf>3</inf>/precursor weight ratio of 2:1 possessed the Brunauer-Emmet-Teller (BET) surface area of 1965 m<sup>2</sup>/g and total pore volume of 1.345 cm<sup>3</sup>/g, while CAAC-1 prepared at the same conditions attained the BET surface area of 1710 m<sup>2</sup>/g and total pore volume of 0.949 cm<sup>3</sup>/g. The surface area and total pore volume of CAAC increased with the impregnation ratio. Moreover, CWAC-1, CWAC-2, CAAC-1, and CAAC-2 exhibited high portion of micropores, illustrating the role of K<inf>2</inf>SiO<inf>3</inf>. The analysis with a Fourier transform infrared spectrometer indicates that CWAC has more functional groups than CAAC, as well as CWAC-1 and CWAC-2 which possess similar functional groups.	en_US
dc.relation.ispartof	Fuel Processing Technology	en_US
dc.relation.isbasedon	10.1016/j.fuproc.2015.08.025	en_US
dc.subject.classification	Energy	en_US
dc.title	Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons	en_US
dc.type	Journal Article
utslib.citation.volume	140	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	140	en_US

Abstract:

© 2015 Elsevier B.V. All rights reserved. The paper probed the preparation of activated carbon by potassium silicate (K2SiO3) activation from keratin waste (cowhair waste, CW) and lignocellulosic materials (Cyperus alternifolius, CA) and the comparisons of physicochemical properties of the resulting carbons. These impregnation conditions were as follows: one impregnated at room temperature for 12 h then dipped at high temperature for 30 min; the other was only impregnated at room temperature for 12 h, producing four activated carbons CWAC-1, CWAC-2, CAAC-1, and CAAC-2. The influence of activation time, K2SiO3/precursor weight ratio, and the pre-process on properties of activated carbons was discussed. The CWAC-1 produced at 700°C with the K2SiO3/precursor weight ratio of 2:1 possessed the Brunauer-Emmet-Teller (BET) surface area of 1965 m²/g and total pore volume of 1.345 cm³/g, while CAAC-1 prepared at the same conditions attained the BET surface area of 1710 m²/g and total pore volume of 0.949 cm³/g. The surface area and total pore volume of CAAC increased with the impregnation ratio. Moreover, CWAC-1, CWAC-2, CAAC-1, and CAAC-2 exhibited high portion of micropores, illustrating the role of K2SiO3. The analysis with a Fourier transform infrared spectrometer indicates that CWAC has more functional groups than CAAC, as well as CWAC-1 and CWAC-2 which possess similar functional groups.

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http://hdl.handle.net/10453/37624