Rashwan, TL;
Fournie, T;
Torero, JL;
Grant, GP;
Gerhard, JI;
(2021)
Scaling up self-sustained smouldering of sewage sludge for waste-to-energy.
Waste Management
, 135
pp. 298-308.
10.1016/j.wasman.2021.09.004.
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Abstract
Self-sustained smouldering combustion presents strong potential as a green waste-to-energy technique for a range of wastes, especially those with high moisture content like wastewater sewage sludge. While well-demonstrated in laboratory experiments, there is little known about scaling up this process to larger, commercial reactors. This paper addresses this knowledge gap by systematically conducting and analyzing experiments in a variety of reactors extending beyond the laboratory scale. This work reveals a robust treatment regime; however, it also identifies potential complications associated with perimeter heat losses at scale. Two key impacts, on the smouldering reactions and the air flow patterns, are shown to potentially degrade treatment if not properly understood and managed. Altogether, this study provides novel insight and guidance for scaling up smouldering science into practical, waste-to-energy systems.
| Type: | Article |
|---|---|
| Title: | Scaling up self-sustained smouldering of sewage sludge for waste-to-energy |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.wasman.2021.09.004 |
| Publisher version: | https://doi.org/10.1016/j.wasman.2021.09.004 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Smoldering combustion; Local thermal non-equilibrium; Wastewater treatment; Sewage sludge; Process scale-up; Heat losses |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10136359 |
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