Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis

Advanced Energy Materials, Год журнала: 2022, Номер 12(22)

Опубликована: Апрель 21, 2022

Abstract Plastic waste remains a global challenge due to the massive amounts being produced without satisfactory treatment technologies for recycling and upcycling. Photocatalytic processes are emerging as green promising approaches upcycle plastics into value‐added products under mild conditions using sunlight energy source. In this review, recent advances in plastic conversion through photocatalysis have been comprehensively summarized. Special emphasis is placed on photocatalytic mechanism selective CC CH bond transformations of access fuels, chemicals, materials. Finally, challenges perspectives establishing new paradigm toward sustainable circular economy also put forward.

Язык: Английский

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Removal of microplastics and nanoplastics from urban waters: Separation and degradation

Water Research, Год журнала: 2022, Номер 221, С. 118820 - 118820

Опубликована: Июль 4, 2022

Язык: Английский

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Microplastics in aquatic systems, a comprehensive review: origination, accumulation, impact, and removal technologies

RSC Advances, Год журнала: 2022, Номер 12(44), С. 28318 - 28340

Опубликована: Янв. 1, 2022

Although the discovery of plastic in last century has brought enormous benefits to daily activities, it must be said that its use produces countless environmental problems are difficult solve.

Язык: Английский

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Microplastic remediation technologies in water and wastewater treatment processes: Current status and future perspectives

The Science of The Total Environment, Год журнала: 2023, Номер 868, С. 161618 - 161618

Опубликована: Янв. 14, 2023

Язык: Английский

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Current research trends on cosmetic microplastic pollution and its impacts on the ecosystem: A review

Environmental Pollution, Год журнала: 2023, Номер 320, С. 121106 - 121106

Опубликована: Янв. 18, 2023

Язык: Английский

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Bioremediation of microplastics in freshwater environments: A systematic review of biofilm culture, degradation mechanisms, and analytical methods

The Science of The Total Environment, Год журнала: 2022, Номер 863, С. 160953 - 160953

Опубликована: Дек. 19, 2022

Microplastics, defined as particles <5 mm in diameter, are emerging environmental pollutants that pose a threat to ecosystems and human health. Biofilm degradation of microplastics may be an ecologically friendly approach. This review systematically summarises the factors affecting biofilm proposes feasible methods improve efficiency microplastic degradation. Environmentally insensitive microorganisms were screened, optimized, commercially cultured facilitate practical application this technology. For strain screening, technology should focus on microorganisms/strains can modify hydrophobicity microplastics, degrade crystalline zone metabolise additives microplastics. The biodegradation mechanism is also described; secreting extracellular oxidases hydrolases key for Measuring changes molecular weight distribution (MWD) enables better analysis behaviour has relatively few applications because its low efficiency; however, enrichment freshwater environments wastewater treatment plant tailwater currently most effective method treating with biofilms.

Язык: Английский

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Insights into the degradation of microplastics by Fenton oxidation: From surface modification to mineralization

Chemosphere, Год журнала: 2022, Номер 309, С. 136809 - 136809

Опубликована: Окт. 10, 2022

This work aims at evaluating the fate of microplastics (MPs) along Fenton oxidation. For such goal, realistic MPs (150-250 μm) five representative polymer types (PET, PE, PVC, PP and EPS) were obtained from commercial plastic products by cryogenic milling. Experiments (7.5 h) performed under relatively severe operating conditions: T = 80 °C; pH0 3; [H2O2]0 1000 mgL-1 (15 doses, 1 every 0.5 h); [Fe3+]0 10 (5 1.5 h). Slight weight losses (∼10%) achieved after oxidation regardless MP nature. Nevertheless, yield clearly increased with decreasing particle size given their higher exposed surface area (up to 20% loss 20-50 μm EPS MPs). Clearly, suffered important changes in due introduction oxygenated groups, which made them more acidic hydrophilic. Furthermore, progressively reduced size. In fact, they can be completely oxidized CO2, as demonstrated PS nanoplastics (140 nm), where 70% mineralization was achieved. The nature particles had a relevant impact on its overall oxidation, being prone those polymers contain aromatic rings structures (EPS PET) compared formed alkane chains (PE, PVC). latter, presence substituents also potential. Remarkably, possible leachates released reaction quickly than MPs/NPs, so it assumed that these dissolved compounds would removed once solid are eliminated. Notably, upon biodegradable fresh solids. All this knowledge is crucial for understanding process opens door design optimization technology either water treatment or analytical purposes (MPs isolation).

Язык: Английский

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Nanomaterials-based adsorbents for remediation of microplastics and nanoplastics in aqueous media: A review

Separation and Purification Technology, Год журнала: 2022, Номер 305, С. 122453 - 122453

Опубликована: Окт. 26, 2022

Язык: Английский

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Innovations in the Development of Promising Adsorbents for the Remediation of Microplastics and Nanoplastics – A Critical Review

Water Research, Год журнала: 2022, Номер 230, С. 119526 - 119526

Опубликована: Дек. 22, 2022

Язык: Английский

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State of the art in the photochemical degradation of (micro)plastics: from fundamental principles to catalysts and applications

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(6), С. 2503 - 2527

Опубликована: Янв. 1, 2023

Plastics and microplastics are major environmental pollutants due to wide applications difficult degradations. Herein, we summarize several studies on degradations of (micro)plastics value-added products intermediates via photocatalysis.

Язык: Английский

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