Towards a mechanistic understanding of particle shrinkage during biomass pyrolysis via synchrotron X-ray microtomography and in-situ radiography
Journal article
Barr, M. R., Jervis, R., Zhang, Y., Bodey, A. J., Rau, C., Shearing, P. R., Brett, D. J. L., Titirici, M.-M. and Volpe, R. (2021). Towards a mechanistic understanding of particle shrinkage during biomass pyrolysis via synchrotron X-ray microtomography and in-situ radiography. Scientific Reports. 11, p. 2656. https://doi.org/10.1038/s41598-020-80228-x
| Authors | Barr, M. R., Jervis, R., Zhang, Y., Bodey, A. J., Rau, C., Shearing, P. R., Brett, D. J. L., Titirici, M.-M. and Volpe, R. |
|---|---|
| Abstract | Accurate modelling of particle shrinkage during biomass pyrolysis is key to the production of biochars with specific morphologies. Such biochars represent sustainable solutions to a variety of adsorption-dependent environmental remediation challenges. Modelling of particle shrinkage during biomass pyrolysis has heretofore been based solely on theory and ex-situ experimental data. Here we present the first in-situ phase-contrast X-ray imaging study of biomass pyrolysis. A novel reactor was developed to enable operando synchrotron radiography of fixed beds of pyrolysing biomass. Almond shell particles experienced more bulk shrinkage and less change in porosity than did walnut shell particles during pyrolysis, despite their similar composition. Alkaline pretreatment was found to reduce this difference in feedstock behaviour. Ex-situ synchrotron X-ray microtomography was performed to study the effects of pyrolysis on pore morphology. Pyrolysis led to a redistribution of pores away from particle surfaces, meaning newly formed surface area may be less accessible to adsorbates. |
| Keywords | Pyrolysis; Particle Shrinkage; In-Situ Imaging; Radiography; Tomography |
| Year | 2021 |
| Journal | Scientific Reports |
| Journal citation | 11, p. 2656 |
| Publisher | Nature Research |
| ISSN | 2045-2322 |
| Digital Object Identifier (DOI) | https://doi.org/10.1038/s41598-020-80228-x |
| Web address (URL) | https://www.nature.com/articles/s41598-020-80228-x |
| Publication dates | |
| Online | 29 Jan 2021 |
| Publication process dates | |
| Accepted | 16 Dec 2020 |
| Deposited | 17 Aug 2023 |
| Publisher's version | License File Access Level Open |
| Accepted author manuscript | License File Access Level Controlled |
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| Towards a mechanistic understanding of particle shrinkage during biomass pyrolysis via synchrotron X-ray microtomography and in-situ radiography.pdf | ||
| License: CC BY 4.0 | ||
| File access level: Open | ||
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