Multiphase analysis of hydrochars obtained by anaerobic digestion of municipal solid waste organic fraction
| Autor: | Gerrit Brem, Małgorzata Sieradzka, Eddy A. Bramer, Halina Pawlak-Kruczek, Christian Aragon-Briceño, Agata Mlonka-Mędrala, Aneta Magdziarz, Łukasz Niedzwiecki, Artur Krzysztof Pozarlik |
|---|---|
| Přispěvatelé: | Thermal Engineering |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Municipal solid waste 060102 archaeology Renewable Energy Sustainability and the Environment 020209 energy Digestate Fraction (chemistry) 06 humanities and the arts 02 engineering and technology Raw material Pulp and paper industry Anaerobic digestion chemistry Biofuel Hydrothermal carbonisation SEM 0202 electrical engineering electronic engineering information engineering medicine 0601 history and archaeology Organic matter Porosity Hydrochar Activated carbon medicine.drug |
| Zdroj: | Renewable energy, 175, 108-118. Elsevier |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2021.05.018 |
| Popis: | Digestate is a nutrient-rich substance produced by anaerobic digestion that contains organic, inorganic, and biological matter. The European Nitrates Directive (91/676/EEC) provides regulations regarding the wider implementation of the digestate. Owing to a significant amount of organic matter in the digestate, it can be utilised as a solid biofuel, soil amendment substance, or substrate for activated carbon production. However, the solid by-products of the anaerobic digestion of the municipal solid waste wet fraction cannot be used for such applications because it is still considered a waste. Hydrothermal carbonisation (HTC) was investigated as a pre-treatment method for the digestate obtained by anaerobic digestion of the municipal solid waste wet fraction. HTC was carried out at temperatures of 180, 200 and 230 °C and residence times of 30, 60 and 120 min. The value of pressure was determined based on water temperature and partial pressure of the gaseous by-products. The HTC process resulted in changes in the physical and chemical properties of the hydrochars compared to those of the raw materials. A temperature of 200 °C and residence time of 60 min during HTC were optimal for energy consumption; this hydrochar exhibited the best combustion parameters and physical properties (specific surface area). |
| Databáze: | OpenAIRE |
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