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Life cycle assessment of the integration of anaerobic digestion and pyrolysis for treatment of municipal solid waste
[Display omitted] •Anaerobic digestion (AD) coupled with pyrolysis (Py) is environmentally favorable.•Environmental impact of different integrations of AD and Py are investigated.•The energy consumption plays a key role in the life cycle assessment.•Py-AD has the worst performance (2.75 of total env...
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Published in: | Bioresource technology 2021-10, Vol.338, p.125486-125486, Article 125486 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | [Display omitted]
•Anaerobic digestion (AD) coupled with pyrolysis (Py) is environmentally favorable.•Environmental impact of different integrations of AD and Py are investigated.•The energy consumption plays a key role in the life cycle assessment.•Py-AD has the worst performance (2.75 of total environmental impact /kg feedstock).•AD-Py has higher industrial potential compared with other scenarios.
The integration of anaerobic digestion (AD) and pyrolysis (Py) could be a solution to economically utilize the organic fraction of municipal solid waste (OFMSW). However, it is not clear whether the environmental impact of the integrated pathway always outperforms the two single technologies. In this study, two integrated pathways (AD-Py, Py-AD) were compared with single AD and Py from the life cycle environmental impacts point of view. The results indicate that the environmental impacts of the four pathways are heavily dependent on their energy inputs and outputs. AD-Py is more environmentally friendly (-11.53 of total environmental impact /kg OFMSW) than single AD or Py. Py-AD exhibites the heaviest environmental burden (2.75 of total environmental impact /kg OFMSW) in all pathways. Therefore, AD-Py can be the top priority of treating OFMSW among the four pathways from the environmental viewpoint. This work could provide a theoretical support for the utilization of OFMSW. |
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ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2021.125486 |