| Autor: |
Amine Lataf, Andrew E. Khalil Awad, Bjorn Joos, Robert Carleer, Jan Yperman, Sonja Schreurs, Jan D’Haen, Ann Cuypers, Dries Vandamme |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Environments, Vol 11, Iss 5, p 102 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2076-3298 |
| DOI: |
10.3390/environments11050102 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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