Steam gasification of char derived from refuse-derived fuel pyrolysis: adsorption behaviour in phenol solutions

The increasing waste generation trends resulted in growing attention to the technologies that aim to reduce or prevent landfilling. The pyrolysis and gasification of refuse-derived fuel (RDF) allow waste to be turned into new raw materials, like pyrolysis gas and syngas. However, the wet gas cleanin...

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Veröffentlicht in:Environmental technology Jg. 45; H. 24; S. 5025 - 5036
Hauptverfasser: Sebe, Emese, Nagy, Gábor, Kállay, András Arnold
Format: Journal Article
Sprache:Englisch
Veröffentlicht: England Taylor & Francis 27.10.2024
Taylor & Francis Ltd
Schlagworte:
Activated carbon
adsorbents
Adsorption
Byproducts
Carbon
Charcoal - chemistry
Chemical composition
Chemical industry
Chemical treatment
environmental technology
Fuels
Gases - chemistry
Gasification
Landfill gas
Landfills
Liquid wastes
phenol
Phenol - chemistry
Phenolic compounds
Phenols
Phenols - chemistry
Pyrolysis
Raw materials
RDF
Refuse derived fuels
Solid wastes
Steam
Synthesis gas
temperature
Waste disposal
Waste disposal sites
Waste to energy
Wastewater
adsorption
pyrolysis
RDF
gasification
ISSN:0959-3330, 1479-487X, 1479-487X
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Zusammenfassung:The increasing waste generation trends resulted in growing attention to the technologies that aim to reduce or prevent landfilling. The pyrolysis and gasification of refuse-derived fuel (RDF) allow waste to be turned into new raw materials, like pyrolysis gas and syngas. However, the wet gas cleaning processes result in the production of highly contaminated liquid waste. Phenolic compounds are common constituents of this wastewater and often appear in the wastewater of other industries as well. In this research, the laboratory-scale steam gasification of an RDF char was performed to produce syngas and adsorbent simultaneously. The RDF was previously pyrolyzed at 700 °C maximum temperature in a Hungarian pyrolysis pilot plant with approximately 120 kg h −1 capacity. In this thermal waste processing plant, the pyrolysis gas is already utilised by burning, but currently, the char ends up in landfills. The gasification of char samples was examined with different steam-to-carbon ratios (0.56, 0.84, and 1.12) and duration (30, 60, and 120 min) at 900 °C. Following gasification, the phenol removal capability of the solid by-products was investigated. The results show that its composition and energetic properties make the produced syngas more suitable to use as a raw material in the chemical industry rather than a fuel. At lower concentrations, the effectiveness of the solid by-product for phenol removal was comparable to commercial activated carbon. These are promising results about producing activated carbon from waste without any chemical treatment.
Bibliographie:ObjectType-Article-1
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ISSN:0959-3330
1479-487X
1479-487X
DOI:10.1080/09593330.2023.2283794