Differentiating low-carbon waste management strategies for bio-based and biodegradable plastics under various energy decarbonization scenarios

Copyright © 2024 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 193(2024) vom: 17. Dez., Seite 328-338
1. Verfasser: Huang, Yuxin (VerfasserIn)
Weitere Verfasser: Han, Mengqi, Bi, Zhujie, Gu, Nannan, Gu, Dungang, Hu, Tingting, Li, Guanghui, Lu, Jiaqi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Bio-based plastics Biodegradable plastics Carbon footprint Carbon sequestration Energy decarbonization Waste management
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520 |a Bio-based and biodegradable (bio-)plastics are heralded as a key solution to mitigate plastic pollution and reduce CO2 emissions. Yet, their end-of-life treatments embodies complex energy and material interactions, potentially leading to emissions through incineration or recycling. This study investigates the cradle-to-grave, emphasizing the waste management stage, carbon footprint for several types of bio-plastics, leveraging both GWP100a and CO2 uptake methods to explore the carbon reduction benefits of recycling over disposal. Our findings indicate that in scenarios characterized by carbon-intensive electricity, using polylactic acid (PLA) as an example, incineration with energy recovery (-1.6316 kg CO2-eq/kg, PLA) yields a more favorable carbon footprint compared to chemical recycling (-1.5317 kg CO2-eq/kg, PLA). In contrast, in environments with a high proportion of renewable energy, chemical recycling is a superior method, and compared to incineration (-1.4087 kg CO2-eq/kg, PLA), the carbon footprint of chemical recycling (-2.0406 kg CO2-eq/kg, PLA) are significantly reduced. While mechanical recycling presents considerable environmental benefits, its applicability is constrained by the waste quality, especially in the case of biodegradable plastics like PLA. In addition, the degradation of biodegradable plastics such as PLA was modeled during compost and anaerobic digestion processes. This enables us to quantify the specific biogenic carbon emissions released during these processing steps, revealing the direct emissions with dynamic degradation. This study highlights the importance of tailoring bio-plastic waste management strategies to support global energy decarbonization while understanding their life-cycle carbon metabolism to effectively tackle plastic pollution and climate change 
650 4 |a Journal Article 
650 4 |a Bio-based plastics 
650 4 |a Biodegradable plastics 
650 4 |a Carbon footprint 
650 4 |a Carbon sequestration 
650 4 |a Energy decarbonization 
650 4 |a Waste management 
700 1 |a Han, Mengqi  |e verfasserin  |4 aut 
700 1 |a Bi, Zhujie  |e verfasserin  |4 aut 
700 1 |a Gu, Nannan  |e verfasserin  |4 aut 
700 1 |a Gu, Dungang  |e verfasserin  |4 aut 
700 1 |a Hu, Tingting  |e verfasserin  |4 aut 
700 1 |a Li, Guanghui  |e verfasserin  |4 aut 
700 1 |a Lu, Jiaqi  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 193(2024) vom: 17. Dez., Seite 328-338  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnns 
773 1 8 |g volume:193  |g year:2024  |g day:17  |g month:12  |g pages:328-338 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2024.12.001  |3 Volltext 
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