Fuel, Год журнала: 2024, Номер 380, С. 133220 - 133220
Опубликована: Сен. 23, 2024
Язык: Английский
ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(3), С. 965 - 978
Опубликована: Янв. 12, 2023
Over 400 million metric tons of plastic waste are generated globally each year, resulting in pollution and lost resources. Recycling strategies can recapture this wasted material, but there is a lack quantitative transparent data on the capabilities impacts these processes. Here, we develop set material quality, retention, circularity, contamination tolerance, minimum selling price, greenhouse gas emissions, energy use, land toxicity, generation, water use metrics for closed-loop polymer recycling technologies, including mechanical solvent-based dissolution polyethylene, polyethylene terephthalate (PET), polypropylene, as well enzymatic hydrolysis, glycolysis, vapor methanolysis PET. Mechanical PET glycolysis display best economic (9%–73% lower than competing technologies) environmental (7%–88% lower) performances, while dissolution, provide recyclate qualities (2%–27% higher). We identify electricity, steam, organic solvents top process contributors to apply sensitivity multicriteria decision analyses highlight key future research areas. The estimates derived work baseline comparing improving help reclaimers optimal end-of-life routes given streams, serve framework assessing innovations.
Язык: Английский
Процитировано
206
Chemical Reviews, Год журнала: 2024, Номер 124(16), С. 9457 - 9579
Опубликована: Авг. 16, 2024
The large production volumes of commodity polyolefins (specifically, polyethylene, polypropylene, polystyrene, and poly(vinyl chloride)), in conjunction with their low unit values multitude short-term uses, have resulted a significant pressing waste management challenge. Only small fraction these is currently mechanically recycled, the rest being incinerated, accumulating landfills, or leaking into natural environment. Since are energy-rich materials, there considerable interest recouping some chemical value while simultaneously motivating more responsible end-of-life management. An emerging strategy catalytic depolymerization, which portion C-C bonds polyolefin backbone broken assistance catalyst and, cases, additional molecule reagents. When products molecules materials higher own right, as feedstocks, process called upcycling. This review summarizes recent progress for four major upcycling strategies: hydrogenolysis, (hydro)cracking, tandem processes involving metathesis, selective oxidation. Key considerations include macromolecular reaction mechanisms relative to mechanisms, design transformations, effect conditions on product selectivity. Metrics describing critically evaluated, an outlook future advances described.
Язык: Английский
Процитировано
35
The Science of The Total Environment, Год журнала: 2024, Номер 942, С. 173561 - 173561
Опубликована: Июнь 6, 2024
Язык: Английский
Процитировано
23
Energy Conversion and Management, Год журнала: 2025, Номер 326, С. 119511 - 119511
Опубликована: Янв. 16, 2025
Язык: Английский
Процитировано
7
The Canadian Journal of Chemical Engineering, Год журнала: 2025, Номер unknown
Опубликована: Янв. 15, 2025
Abstract The increasing demand for sustainable energy sources has driven significant advancements in the field of bio‐oil production. This article scrutinizes catalytic pyrolysis its ability to improve characteristics through use catalysts and optimization process conditions. Critical parameters such as reaction temperature, heating rate, biomass feedstock, catalyst type are analyzed their influence on properties. Innovations design, including development hierarchical zeolites, metal oxides, bifunctional catalysts, explored efficacy deoxygenation, minimizing coke formation, stabilizing bio‐oil. Additionally, advanced techniques like plasma co‐pyrolysis with diverse feedstocks investigated further enhance quality. techno‐economic analysis is conducted assess feasibility these novel techniques, considering fixed variable costs, market potential produced aims provide a holistic perspective economic viability scalability research contributes very recent advancement production technologies, offering insights into optimizing innovations. findings facilitate more efficient economically viable methods, supporting transition renewable sources.
Язык: Английский
Процитировано
5
Chemical Engineering Journal, Год журнала: 2023, Номер 479, С. 147853 - 147853
Опубликована: Дек. 2, 2023
Язык: Английский
Процитировано
35
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Июль 4, 2024
Abstract The chemical recycling of polyester wastes is great significance for sustainable development, which also provides an opportunity to access various oxygen-containing chemicals, but generally suffers from low efficiency or separation difficulty. Herein, we report anatase TiO 2 supported Ru and Mo dual-atom catalysts, achieve transformation polyesters into corresponding diols in 100% selectivity via hydrolysis subsequent hydrogenation water under mild conditions (e.g., 160 °C, 4 MPa). Compelling evidence provided the coexistence single-atom O-bridged sites within this kind catalysts. It verified that activate H carboxylic acid derived hydrolysis, suppress hydrodeoxygenation resultant alcohols due a high reaction energy barrier. Notably, catalysts can be regenerated with activity stability. This work presents effective way reconstruct valuable diols, may have promising application potential.
Язык: Английский
Процитировано
17
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Ноя. 29, 2024
The surge in global plastic production, reaching 400.3 million tons 2022, has exacerbated environmental pollution, with only 11% of being recycled. Catalytic recycling, particularly through hydrogenolysis and hydrocracking, offers a promising avenue for upcycling polyolefin plastic, comprising 55% waste. This study investigates the influence water on depolymerization using Ru catalysts, revealing promotional effect when both metal acid sites, Brønsted site, are present. Findings highlight impact content, metal-acid balance, their proximity this interaction, as well role modulating isomerization process, affecting product selectivity. Additionally, interaction facilitates suppression coke formation, ultimately enhancing catalyst stability. A comprehensive techno-economic life cycle assessment underscores viability benefits presence water. These insights advance understanding offer strategies optimizing recycling processes. hydrocracking present approach plastics. Here, authors catalytic upcycling, emphasizing that catalysts an optimal balance significantly improve polyethylene is
Язык: Английский
Процитировано
11
Green Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
A novel waste plastic pyrolysis oil hydrocracking process uniquely integrating simulation with advanced deep learning models for multi-objective optimization.
Язык: Английский
Процитировано
1
Environmental Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1