Green bioplastics as part of a circular bioeconomy
Abstract
The rapid accumulation of plastic waste is driving international demand for renewable plastics with superior qualities (e.g., full biodegradability to CO 2 without harmful byproducts), as part of an expanding circular bioeconomy. Higher plants, microalgae, and cyanobacteria can drive solar-driven processes for the production of feedstocks that can be used to produce a wide variety of biodegradable plastics, as well as bioplastic-based infrastructure that can act as a long-term carbon sink. The plastic types produced, their chemical synthesis, scaled-up biorefinery concepts (e.g., plant-based methane-to-bioplastic production and co-product streams), bioplastic properties, and uses are summarized, together with the current regulatory framework and the key barriers and opportunities.
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For biodegradable bioplastics, up to 90% of the organic carbon can be converted to CO2 in about 180 days.
“For example, for biodegradable bioplastics, up to 90% of the organic carbon can be converted to CO2 in about 180 days; the carbon in the form of CO2 can return to the biosphere after the use phase (Karan et al., 2019).”
From Circular Bioeconomy Concepts—A Perspective (2021) · cites this paper as Karan et al., 2019
The carbon in the form of CO2 can return to the biosphere after the use phase of biodegradable bioplastics.
“For example, for biodegradable bioplastics, up to 90% of the organic carbon can be converted to CO2 in about 180 days; the carbon in the form of CO2 can return to the biosphere after the use phase (Karan et al., 2019).”
From Circular Bioeconomy Concepts—A Perspective (2021) · cites this paper as Karan et al., 2019
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References 83 · Cited by 485
- Authors
- Karan, H., Funk, C., Grabert, M., Oey, M., & Hankamer, B.
- Affiliations
- The University of Queensland (AU)
- Umeå University (SE)
- Corresponding author
- Hankamer, Ben
- Venue
- Trends in Plant Science
- Publisher
- Elsevier BV
- Published
- 2019-03
- Volume
- 24
- Issue
- 3
- Pages
- 237-249
- ISSN
- 1360-1385 (ISSN-L)
- OpenAlex
- W2907377462
- Cited by
- 485
- References
- 83
- Citations by year
- 2026: 39 · 2025: 63 · 2024: 71 · 2023: 86 · 2022: 81 · 2021: 85 · 2020: 48 · 2019: 12
- FWCI
- 3.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Trends in Plant Science (publishedVersion)
- PubMed (publishedVersion)
- Funders
- ARC (LP150101147)
- Topics
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Life Sciences › Agricultural and Biological Sciences › General Agricultural and Biological Sciences › Bioeconomy and Sustainability Development
- Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
- Keywords
- circular bioeconomy, biodegradable plastics, renewable plastics, plastic waste, microalgae, cyanobacteria, higher plants, biorefinery, carbon sink
- MeSH terms
- Microalgae, Biodegradable Plastics
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