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Title: | Iron Oxide-Activated Carbon Composites for Enhanced Microwave-Assisted Pyrolysis of Hardwood | Authors: | LATAF, Amine Khalil Awad, Andrew E. JOOS, Bjorn CARLEER, Robert YPERMAN, Jan D'HAEN, Jan CUYPERS, Ann SCHREURS, Sonja VANDAMME, Dries |
Issue Date: | 2024 | Publisher: | MDPI | Source: | Environments, 11 (5) (Art N° 102) | Abstract: | A commercial activated carbon (AC) was modified through iron oxide incorporation to obtain microwave absorbers (MWAs) for microwave-assisted pyrolysis. The influence of iron oxide content (5 and 20 wt% Fe3O4) and the modification methods were tested as follows: (1) in situ co-precipitation + washing step with Milli-Q; (2) in situ co-precipitation + washing step with Milli-Q/ethanol; and (3) physical iron oxide blending. The resulting MWAs were evaluated on the microwave-assisted pyrolysis of hardwood in a Milestone Flexiwave microwave reactor. The biochar yield varied from 24 wt% to 89 wt% and was influenced by the modification method rather than the iron oxide addition. The MWAs with physically blended iron oxide resulted in biochar yields comparable to conventional biochar (450 °C). Furthermore, the addition of iron oxide-activated carbon composites during the microwave-assisted pyrolysis caused a significant decrease in the biochar’s 16 EPA polycyclic aromatic hydrocarbons, mainly by reducing the amount of pyrene in the biochar. | Keywords: | activated carbon;iron oxide;microwave absorbers;microwave-assisted pyrolysis;polycyclic aromatic hydrocarbons | Document URI: | http://hdl.handle.net/1942/43047 | e-ISSN: | 2076-3298 | DOI: | 10.3390/environments11050102 | ISI #: | 001232198100001 | Rights: | 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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environments-11-00102.pdf | Published version | 2.66 MB | Adobe PDF | View/Open |
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