LAPSE:2023.32494
Published Article
LAPSE:2023.32494
Upgrading the Organic Fraction of Municipal Solid Waste by Low Temperature Hydrothermal Processes
April 20, 2023
In comparison to lignocellulosic biomass, which is suitable for thermo-chemical valorization, the organic fraction of municipal solid waste (OFMSW) is mainly treated via composting or anaerobic digestion (AD). An efficient utilization of OFMSW is difficult due to variations in its composition. Based on the characteristics of OFMSW, hydrothermal treatment (HTT) experiments at temperatures < 200 °C as an alternative OFMSW-processing were evaluated in this study. The raw OFMSW was characterized with a dry matter (DM)-based organic dry matter (oDM) content of 77.88 ± 1.37 %DM and a higher heating value (HHV) of 15,417 ± 1258 J/gDM. Through HTT at 150, 170 and 185 °C, the oDM contents as well as H/C and O/C ratios were lowered while the HHV increased up to 16,716 ± 257 J/gDM. HTT led to improved fuel properties concerning ash melting, corrosion stress and emission behavior. Negative consequences of the HTT process were higher contents of ash in the biochar as well as accumulated heavy metals. In the sense of a bioeconomy, it could be beneficial to first convert raw OFMSW into CH4 through AD followed by HTT of the AD-digestate for the generation of solid fuels and liquid products. This could increase the overall utilization efficiency of OFMSW.
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Keywords
anaerobic digestion, biochar, Biofuels, biomass upgrading, biowaste, hydrothermal carbonization, municipal waste, OFMSW, thermochemical valorization, waste treatment
Subject
Suggested Citation
Sailer G, Knappe V, Poetsch J, Paczkowski S, Pelz S, Oechsner H, Bosilj M, Ouardi S, Müller J. Upgrading the Organic Fraction of Municipal Solid Waste by Low Temperature Hydrothermal Processes. (2023). LAPSE:2023.32494
Author Affiliations
Sailer G: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany [ORCID]
Knappe V: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany
Poetsch J: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany
Paczkowski S: Department of Forest Work Science and Engineering, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 4, 37077 Göttingen, Germany
Pelz S: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany [ORCID]
Oechsner H: State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany [ORCID]
Bosilj M: Sustainable Catalytic Materials Group, Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110 Freiburg im Breisgau, Germany
Ouardi S: Sustainable Catalytic Materials Group, Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110 Freiburg im Breisgau, Germany
Müller J: Tropics and Subtropics Group, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany [ORCID]
Knappe V: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany
Poetsch J: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany
Paczkowski S: Department of Forest Work Science and Engineering, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 4, 37077 Göttingen, Germany
Pelz S: Department of Bioenergy, University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany [ORCID]
Oechsner H: State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany [ORCID]
Bosilj M: Sustainable Catalytic Materials Group, Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110 Freiburg im Breisgau, Germany
Ouardi S: Sustainable Catalytic Materials Group, Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstraße 2, 79110 Freiburg im Breisgau, Germany
Müller J: Tropics and Subtropics Group, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany [ORCID]
Journal Name
Energies
Volume
14
Issue
11
First Page
3041
Year
2021
Publication Date
2021-05-24
Published Version
ISSN
1996-1073
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PII: en14113041, Publication Type: Journal Article
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LAPSE:2023.32494
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doi:10.3390/en14113041
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