This study was aimed to understand the rheological properties and stability characteristics of biochar-algae-water (BAW) slurry fuels prepared by wet milling. A pine sawdust biochar and a chlorella vulgaris algae were used in preparing the slurry fuels. The BAW slurries were formulated by mixing the biochar, algae, de-ionized water, lignosulfonic acid sodium salt, and then the mixture was ball-milled for various times. The BAW slurries with a constant solid loading of 45 wt % were prepared with varied algae proportion in algae/biochar mixture. The apparent viscosity and stability of BAW slurries were measured. It was found that D50 of the particles of the solid in the slurries decreased with increasing milling time. The viscosity of the slurries decreased first and then increased as milling time increased, reaching a minimal value when D50 of the solid was between 3 and 7 μm. The lowest viscosity of BAW slurries achieved at a given solid loading increased with increasing the algae proportion in the solid. The BAW slurries showed better stability at higher algae proportions due to enhanced flocculation.
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July 2019
Research-Article
Rheological Properties and Stability Characteristics of Biochar-Algae-Water Slurry Fuels Prepared by Wet Milling
Pengfei Liu,
Pengfei Liu
Centre for Energy (M473),
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Pengfei.Liu@research.uwa.edu.au
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Pengfei.Liu@research.uwa.edu.au
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Mingming Zhu,
Mingming Zhu
Centre for Energy (M473),
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Mingming.Zhu@uwa.edu.au
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Mingming.Zhu@uwa.edu.au
1Corresponding author.
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Zhezi Zhang,
Zhezi Zhang
Centre for Energy (M473),
The University of Western Australia,
Crawley, WA 6009, Australia
e-mail: Zhezi.Zhang@uwa.edu.au
The University of Western Australia,
35 Stirling Highway
,Crawley, WA 6009, Australia
e-mail: Zhezi.Zhang@uwa.edu.au
Search for other works by this author on:
Dongke Zhang
Dongke Zhang
Centre for Energy (M473),
The University of Western Australia,
Crawley, WA 6009, Australia
e-mail: Dongke.Zhang@uwa.edu.au
The University of Western Australia,
35 Stirling Highway
,Crawley, WA 6009, Australia
e-mail: Dongke.Zhang@uwa.edu.au
Search for other works by this author on:
Pengfei Liu
Centre for Energy (M473),
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Pengfei.Liu@research.uwa.edu.au
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Pengfei.Liu@research.uwa.edu.au
Mingming Zhu
Centre for Energy (M473),
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Mingming.Zhu@uwa.edu.au
The University of Western Australia,
35 Stirling Highway,
Crawley, WA 6009, Australia
e-mail: Mingming.Zhu@uwa.edu.au
Zhezi Zhang
Centre for Energy (M473),
The University of Western Australia,
Crawley, WA 6009, Australia
e-mail: Zhezi.Zhang@uwa.edu.au
The University of Western Australia,
35 Stirling Highway
,Crawley, WA 6009, Australia
e-mail: Zhezi.Zhang@uwa.edu.au
Dongke Zhang
Centre for Energy (M473),
The University of Western Australia,
Crawley, WA 6009, Australia
e-mail: Dongke.Zhang@uwa.edu.au
The University of Western Australia,
35 Stirling Highway
,Crawley, WA 6009, Australia
e-mail: Dongke.Zhang@uwa.edu.au
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received July 22, 2018; final manuscript received April 3, 2019; published online May 8, 2019. Assoc. Editor: Ashwani K. Gupta.
J. Energy Resour. Technol. Jul 2019, 141(7): 070709 (5 pages)
Published Online: May 8, 2019
Article history
Received:
July 22, 2018
Revised:
April 3, 2019
Citation
Liu, P., Zhu, M., Zhang, Z., and Zhang, D. (May 8, 2019). "Rheological Properties and Stability Characteristics of Biochar-Algae-Water Slurry Fuels Prepared by Wet Milling." ASME. J. Energy Resour. Technol. July 2019; 141(7): 070709. https://doi.org/10.1115/1.4043551
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