Projects per year
Abstract
The rheological behaviour and stability characteristics of biochar-glycerol-water slurry fuels were experimentally investigated, emphasising the effect of glycerol addition. A pine sawdust biochar with a size fraction of < 32 μm and a median particle size (D50) of approximately 12 μm was used. A biochar-glycerol-water slurry fuel was prepared by dispersing biochar particles in a premixed glycerol/water solution as the suspending medium with glycerol content varying from 0 to 100 wt%. 2 wt% lignosulfonic acid sodium salt (LASS) (on the basis of dry weight of biochar) was added to the suspending medium as a dispersant. The effect of glycerol content on the rheological properties and stability characteristics of the slurry fuels were studied. The yield stress was measured with a Brookfield vane viscometer and the dependence of apparent viscosity and shear stress on the shear rate was characterised using a Haake VT550 cone and plate viscometer. The stability characteristics of the slurry fuels were characterised by using a “drop rod” method. As glycerol content increased, the maximum biochar loading decreased from 50 to 10 wt% while the calorific values of the slurry fuels first increased and then decreased, reaching a maximum of 21 MJ kg− 1 at 90 wt% glycerol content. For a given biochar loading, increasing glycerol content increased the viscosity of the suspending medium and therefore the viscosity of the slurry fuels, displaying higher yield stress, more apparent shear-thinning behaviour and higher stability due to the enhanced flocculation of biochar particles.
Original language | English |
---|---|
Pages (from-to) | 37-42 |
Number of pages | 6 |
Journal | Fuel Processing Technology |
Volume | 153 |
Early online date | 5 Aug 2016 |
DOIs | |
Publication status | Published - 1 Dec 2016 |
Fingerprint
Dive into the research topics of 'An experimental study of rheological properties and stability characteristics of biochar-glycerol-water slurry fuels'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Production Processing & Combustion of an Innovative Slurry Fuel for High Efficiency Distributed Power Generation
Zhang, D., Moghtaderi, B., Pareek, V., Yang, H., Wang, S. & Wibberley, L.
1/01/11 → 31/12/15
Project: Research
-
Synthetic Natural Gas & Biochar from Biomass for Energy Services in Remote Communities & Soil Carbon Sequestration
Zhang, D., Yang, H., APAI, N. N., APAI, U., Xu, Z., APAI_1, N. N., Chen, C., APAI_2, N. N., APAI_3, N. N., Anderson, I., APAI_4, N. N., Pareek, V. & APAI_5, N. N.
30/06/10 → 31/12/15
Project: Research
Research output
- 10 Citations
- 1 Conference paper
-
An experimental study of rheological properties and stability characteristics of biochar-glycerol-water slurry fuels
Zhang, D., Liu, P., Leong, Y-K. & Zhu, M., 2017, Proceedings of the European Combustion Meeting.Research output: Chapter in Book/Conference paper › Conference paper › peer-review