Influence of solid content and maximum temperature on the performance of a hydrothermal carbonization reactor

Hydrothermal carbonization is a thermochemical process that converts wet organic matter into a sterile, high-calorific solid material called hydrochar. This technology is considered an interesting option for low- and middle-income urban settings, often lacking adequate services and high fraction of...

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Veröffentlicht in:Environmental technology. - 1993. - 38(2017), 22 vom: 03. Nov., Seite 2856-2865
1. Verfasser: Zabaleta, Imanol (VerfasserIn)
Weitere Verfasser: Marchetti, Paola, Lohri, Christian Riuji, Zurbrügg, Christian
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Hydrothermal carbonization biowaste hydrochar organic waste thermochemical treatment Solid Waste Charcoal 16291-96-6
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520 |a Hydrothermal carbonization is a thermochemical process that converts wet organic matter into a sterile, high-calorific solid material called hydrochar. This technology is considered an interesting option for low- and middle-income urban settings, often lacking adequate services and high fraction of wet organic waste. The aim of this study was to study the influence of the loading rate (total solid content) and the maximum temperature reached on the resulting energy ratio (ER) of the process and the fuel properties of the obtained hydrochar. Ten experiments were carried out with a standardized biowaste-feedstock. Different solid contents (2.54%, 4.93%, 7.44%, 9.45%, 12.83%, 15.2% by weight) and different targeted maximum temperatures (170°C, 180°C, 190°C, 200°C) were tested. Compared to the feedstock, all resulting hydrochars had an increased higher heating value (HHV) (average of 29.2 MJ/kgdb) and carbon content (average of 66.9%db) than the original biowaste (19.3 MJ/kgdb and 46.2%db, respectively). The HHV obtained were similar to those of charcoal (29.6 MJ/kg). Higher solid contents resulted in higher hydrochar yields and carbon efficiencies, whereas higher temperatures resulted in higher carbon content and HHV of the hydrochar. The experiment with the highest solid content (15.2%wt) achieved an ER > 1 
650 4 |a Journal Article 
650 4 |a Hydrothermal carbonization 
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650 4 |a hydrochar 
650 4 |a organic waste 
650 4 |a thermochemical treatment 
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650 7 |a Charcoal  |2 NLM 
650 7 |a 16291-96-6  |2 NLM 
700 1 |a Marchetti, Paola  |e verfasserin  |4 aut 
700 1 |a Lohri, Christian Riuji  |e verfasserin  |4 aut 
700 1 |a Zurbrügg, Christian  |e verfasserin  |4 aut 
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773 1 8 |g volume:38  |g year:2017  |g number:22  |g day:03  |g month:11  |g pages:2856-2865 
856 4 0 |u http://dx.doi.org/10.1080/09593330.2017.1280538  |3 Volltext 
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