The DOI matches its Crossref record; 58 of the 59 references it cites were found in a registry or an index.
Anaerobic co-digestion of three commercial bio-plastic bags with food waste: Effects on methane production and microbial community structure
Abstract
The emergence of bioplastic bags as a replacement for traditional petroleum-based plastic bags is promising for their simultaneous anaerobic digestion with food waste. In this study, the degradation of three bioplastic bags is evaluated during anaerobic co-digestion with food waste under mesophilic/thermophilic conditions, and the results indicated PBAT/PLA/starch > PLA > PBAT for methane production rate. The PBAT/PLA/starch mixture produced 23.4 ml/g of methane at 55 °C, and the cumulative methane production increased by 28.4 % compared to the control. In addition, the lag time before methane production was reduced by one to four days when anaerobic co-digestion was performed under thermophilic conditions, and the conversion of the bioplastics improved by 9.11-11.2 %. Microscopy further showed obvious physical degradation of the PBAT/PLA/starch material. The FTIR analysis showed that the characteristic peaks of the material at 3320, 2957, and 934 cm-1 decreased significantly after anaerobic fermentation. The biodegradability of the polymer decreased with an increase in the content of the crystalline area in the structure. The addition of a comonomer reduced the crystallinity of the polymer. In addition, the biodegradability was increased by adjusting the hydrolysis reaction and microbial activity of the polymer surface. An analysis of the structural features of the microbial communities revealed that Archaea exhibited different biodiversity at distinct temperatures. In particular, under thermophilic conditions, the relative abundance of Methanothermobacter was 56.0 %, and it plays an important role in the anaerobic degradation of PBAT/PLA/starch materials, while bacterial communities showed smaller differences. Overall, the bioplastic was able to be co-digested anaerobically with food waste to produce renewable energy. This study provides a plan for the practical application of biodegradable plastic bag collection for the combined treatment of food waste in anaerobic digesters. It provides a theoretical basis for modifications of bioplastic and domestication of anaerobic microorganisms.
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Metadata
- Authors
- Yu, C., Dongsu, B., Tao, Z., Xintong, J., Ming, C., Siqi, W., Zheng, S., & Yalei, Z.
- Affiliations
- Tongji University (CN)
- Shanghai Institute of Technology (CN)
- Corresponding author
- Zheng, Shen
- ORCID
- Zheng, Shen
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2023-02
- Volume
- 859
- Issue
- Pt 1
- Pages
- 159967
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W4308308356
- Cited by
- 55
- References
- 59
- Citations by year
- 2026: 9 · 2025: 14 · 2024: 19 · 2023: 13
- FWCI
- 5.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- www.elsevier.com/legal/tdmrep-license (tdm)
- doi.org/10.15223/policy-017 (stm-asf)
- doi.org/10.15223/policy-037 (stm-asf)
- doi.org/10.15223/policy-012 (stm-asf)
- doi.org/10.15223/policy-029 (stm-asf)
- doi.org/10.15223/policy-004 (stm-asf)
- Locations
- The Science of The Total Environment (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Science and Technology Commission of Shanghai Municipality
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Anaerobic Digestion and Biogas Production
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Composting and Vermicomposting Techniques
- Keywords
- co-digestion, food waste, polylactic acid, poly(butylene adipate-co-terephthalate), methane production, thermophilic digestion, microbial community structure, Methanothermobacter, biodegradability, polymer crystallinity, biodegradable plastics
- MeSH terms
- Anaerobiosis, Food, Methane, Polymers, Refuse Disposal, Sewage, Starch, Methanobacteriaceae, Bioreactors, Microbiota
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- The paper
- Yu, C., Dongsu, B., Tao, Z., Xintong, J., Ming, C., Siqi, W., Zheng, S., & Yalei, Z. (2023). Anaerobic co-digestion of three commercial bio-plastic bags with food waste: Effects on methane production and microbial community structure. Science of The Total Environment. https://doi.org/10.1016/j.scitotenv.2022.159967
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