Hydrochar production from defective coffee beans by hydrothermal carbonization
| Autor: | Rafael Pereira Alves, Willian Miguel da Silva Borges, Mozarte Santos Santana, Elton Francisquini, Mário César Guerreiro |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Thermogravimetric analysis Environmental Engineering Renewable Energy Sustainability and the Environment Chemistry Temperature Bioengineering General Medicine 010501 environmental sciences Solid fuel Coffee 01 natural sciences Carbon Hydrothermal carbonization Differential scanning calorimetry Chemical engineering Food Biofuel Biofuels 010608 biotechnology Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Bioresource Technology. 300:122653 |
| ISSN: | 0960-8524 |
| Popis: | This study aimed to produce and characterize hydrochars from defective coffee beans and its application as a solid fuel. Defective coffee beans were used as precursor residue for hydrochar synthesis. Reactions were run in a high-pressure reactor at temperatures of 150, 200 and 250 °C, under autogenesis pressure, for 40 min. Solid phase was recovered by filtration and characterized by CHNO-S analyzer, thermogravimetric analysis and differential scanning calorimetry. Hydrothermal carbonization temperature was key to change energy values and fuel properties. These results suggest hydrothermal carbonization is an effective and simple strategy for converting coffee waste into functional, high-quality, and energy-dense solid biofuels. |
| Databáze: | OpenAIRE |
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