Biodegradable plastics can alter carbon and nitrogen cycles to a greater extent than conventional plastics in marine sediment

Sanz‐Lázaro, Carlos; Casado‐Coy, Nuria; Beltrán-Sanahuja, Ana

doi:10.1016/j.scitotenv.2020.143978

Cited by 64 publications

(16 citation statements)

References 47 publications

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“…It is uncertain whether biodegradable plastics can assist lower the carbon footprint of plastics. Commonly, plants are utilized in the creation of bio-based biodegradable polymers, despite the fact that plants can absorb CO 2 through photosynthesis [106]. It has been found that biodegradable plastics can promote metabolic pathways in anaerobic sediments on the seafloor, leading to the decomposition of organic carbon buried in the ocean.…”

Section: Biomass Utilizationmentioning

confidence: 99%

“…It has been found that biodegradable plastics can promote metabolic pathways in anaerobic sediments on the seafloor, leading to the decomposition of organic carbon buried in the ocean. This has the potential to impact carbon sequestration in coastal ecosystems, diminishing their capacity to moderate climate change [106,107]. In addition, around 0.02% of the world's arable land is used to produce bio-based plastics.…”

Section: Biomass Utilizationmentioning

confidence: 99%

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Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

Zhou¹,

Wang²,

Feng³

et al. 2023

Journal of Renewable Materials

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Greenhouse gas emissions from waste plastics have caused global warming all over the world, which has been a central threat to the ecological environment for humans, flora and fauna. Among waste plastics, waste polyethylene terephthalate (PET) is attractive due to its excellent stability and degradation-resistant. Therefore, merging China's carbon peak and carbon neutrality goals would be beneficial. In this review, we summarize the current state-of-the-art of carbon emission decrease from a multi-scale perspective technologically. We suggest that the carbon peak for waste PET can be achieved by employing the closed-loop supply chain, including recycling, biomass utilization, carbon capture and utilization. Waste PET can be a valuable and renewable resource in the whole life cycle. Undoubtedly, all kinds of PET plastics can be ultimately converted into CO 2, which can also be feedstock for various kinds of chemical products, including ethyl alcohol, formic acid, soda ash, PU, starch and so on. As a result, the closed-loop supply chain can help the PET plastics industry drastically reduce its carbon footprint. KEYWORDSCarbon peak emission; PET plastic; recycling; waste management Abbreviations Table PET polyethylene terephthalate MEG monoethylene glycol GHG greenhouse gas PLA polylactic acid CLSC closed-loop supply chain This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Section: Biomass Utilizationmentioning

confidence: 99%

Section: Biomass Utilizationmentioning

confidence: 99%

Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

Zhou¹,

Wang²,

Feng³

et al. 2023

Journal of Renewable Materials

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“…It has been estimated that the amount of plastic waste that will be generated in the year 2060 will rise to 265 million metric tons (Lebreton and Andrady 2019 ). In addition to causing visual pollution, plastic waste causes alterations in biogeochemical cycles and environmental matrices (Sanz-Lázaro et al 2021 ; Wang et al 2021 ). Plastic wastes are classified according to their size into megaplastics (> 1 m), macroplastics (2.5 cm–1 m), mesoplastics (5 mm–2.5 cm), microplastics (1 - 5,000 μm), and nanoplastics (< 1 μm) (Lippiatt et al 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Terrestrial mammals of the Americas and their interactions with plastic waste

Ayala

Zeta-Flores

Ramos-Baldárrago³

et al. 2023

Environ Sci Pollut Res

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Plastics have brought many benefits to society, but their mismanagement has turned them into a serious environmental problem. Today, the effects of plastic waste on wildlife are becoming increasingly evident. Since studies on plastic pollution have focused on species in marine ecosystems, here we review current knowledge on interactions between terrestrial mammals and plastic waste in the countries of the Americas, which is a global hotspot of mammalian biodiversity and in turn has, among its member countries, nations with high per capita generations of plastic waste globally. We identified 46 scientific articles documenting plastic ingestion in 37 species and four species that used plastic waste for nest or burrow construction. Of the 46 investigations, seven focused on plastic contamination, while the others reported on the presence of plastics in wildlife, even though this was not the primary focus of the research. However, these publications lack analytical methods commonly used in plastic studies, and only one study applied a standardized methodology for plastic detection. Therefore, in general, plastic pollution research on terrestrial mammals is limited. We extend several recommendations such as designing methodologies that are adapted to terrestrial mammals for the identification of plastics in fecal matter or gastrointestinal contents, carrying out species-specific analyzes on the impacts of plastics in nests or burrows, and giving further attention to this understudied issue and taxa. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-023-26617-x.

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“…This mineral formation will take place on or near the buried plastic and may even incorporate microplastics (MP) and nanoplastics (NP) (Leiser et al, 2020). Therefore, key questions for plastics exposed to different biogeochemical environments in water and sediment layers are: 1) which minerals and metals are found at the plastic surface, 2) can degradation be detected, and 3) which associated microorganisms are found linked to different metabolic pathways typically dominant at sediment depth, e.g., sulphur, nitrogen, methane metabolism (e.g., Tagg et al, 2019;Seeley et al, 2020;Galgani and Loiselle, 2021;Sanz-Laźaro et al, 2021;Pinnell et al, 2022).…”

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confidence: 99%

Microbe-mineral interactions in the Plastisphere: Coastal biogeochemistry and consequences for degradation of plastics

et al. 2023

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Microbe-mineral interactions, such as mineral substrate utilization and aggregate formation, have played a key role in the cycling of elements through Earth evolution. In water, soils, and sediment biogeochemistry modulates microbial community composition and mineral formation over spatial and temporal scales. Plastic is a new material that is now widespread in the environment. Both microbial and mineral associations with plastic comprise the Plastisphere, which influences the fate of plastic. This study focuses on how the biogeochemical environment defines microbial and mineral association with polyethylene (PE) and polystyrene (PS) over a 12-month period in a temperate coastal harbor. The coastal harbor environment was separated into 3 conceptual compartments defined by physical and biogeochemical conditions, that allow transfer of electrons between species e.g., light penetration and redox setting. Microbe and mineral association were investigated in the water column, top sediment, and bottom sediment by applying a range of modern analytical techniques to identify changes in the chemical structures of plastics, microbial community development, metal, salt and mineral formation. The epiplastic microbial community was distinct to that of the surrounding environment across changing redox conditions. The type and oxidation state of metallic minerals formed on plastics or entrapped in the biofilm matrix related to the dominant abiotic and biotic processes across redox conditions. FTIR spectroscopy indicated the occurrence of PE and PS oxidation in the various biogeochemical environments. Combined, these findings demonstrate that redox conditions and surrounding biogeochemistry mediate the composition of mineralogical and biological loading of PE and PS in coastal marine environments. This suggests that the biogeochemical setting in which the plastics are stored constrains the development of plastic interfacial biogeochemistry and the potential for plastic degradation and transport over time.

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Biodegradable plastics can alter carbon and nitrogen cycles to a greater extent than conventional plastics in marine sediment

Cited by 64 publications

References 47 publications

Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

Terrestrial mammals of the Americas and their interactions with plastic waste

Microbe-mineral interactions in the Plastisphere: Coastal biogeochemistry and consequences for degradation of plastics

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