Technical and market substitutability of recycled materials: Calculating the environmental benefits of mechanical and chemical recycling of plastic packaging waste

Waste Management, Journal Year: 2022, Volume and Issue: 152, P. 69 - 79

Published: Aug. 19, 2022

Language: Английский

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Recent Advances in the Decontamination and Upgrading of Waste Plastic Pyrolysis Products: An Overview

Processes, Journal Year: 2022, Volume and Issue: 10(4), P. 733 - 733

Published: April 11, 2022

Extensive research on the production of energy and valuable materials from plastic waste using pyrolysis has been widely conducted during recent years. Succeeding in demonstrating sustainability this technology economically technologically at an industrial scale is a great challenge. In most cases, crude products cannot be used directly for several reasons, including presence contaminants. This confirmed by studies, advanced characterization techniques such as two-dimensional gas chromatography. Thus, to overcome these limitations, post-treatment methods, dechlorination, distillation, catalytic upgrading hydroprocessing, are required. Moreover, integration units into conventional refineries only possible if pre-treated, which involves sorting, washing dehalogenation. The different studies examined review showed that distillation oil allows control carbon distribution fractions. hydroprocessing pyrolytic gives promising results terms reducing contaminants, chlorine, one order magnitude. Recent developments product methods also reported review. application generation or added-value material determines economic process.

Language: Английский

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Catalytic conversion of model compounds of plastic pyrolysis oil over ZSM-5

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 324, P. 122219 - 122219

Published: Nov. 26, 2022

Language: Английский

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Integrating a Chemicals Perspective into the Global Plastic Treaty

Environmental Science & Technology Letters, Journal Year: 2022, Volume and Issue: 9(12), P. 1000 - 1006

Published: Nov. 22, 2022

Driven by the growing concern about plastic pollution, countries have agreed to establish a global treaty addressing full life cycle of plastics. However, while plastics are complex materials consisting mixtures chemicals such as additives, processing aids, and nonintentionally added substances, it is at risk that chemical aspects may be overlooked in forthcoming treaty. This highly concerning because large variety over 10,000 substances been used production, many them known hazardous human health environment. In this Global Perspective, we further highlight an additional, generally overlooked, but critical aspect hamper technological solutions envisioned solve some major issues: mechanical recycling, waste-to-energy, biobased plastics, biodegradable durable Building on existing success stories, outline three concrete recommendations how can integrated into ensure its effectiveness: (1) reducing complexity (2) ensuring transparency (3) aligning right incentives for systematic transition.

Language: Английский

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Maximizing olefin production via steam cracking of distilled pyrolysis oils from difficult-to-recycle municipal plastic waste and marine litter

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 838, P. 156092 - 156092

Published: May 21, 2022

Language: Английский

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Atmospheric microplastic and nanoplastic: The toxicological paradigm on the cellular system

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 259, P. 115018 - 115018

Published: May 20, 2023

The increasing demand for plastic in our daily lives has led to global pollution. improper disposal of resulted a massive amount atmospheric microplastics (MPs), which further the production nanoplastics (NPs). Because its intimate relationship with environment and human health, microplastic nanoplastic contamination is becoming problem. are microscopic light, they may penetrate deep into lungs. Despite several studies demonstrating abundance air, potential risks remain unknown. small size, characterization presented significant challenges. This paper describes sampling procedures nanoplastics. study also examines numerous harmful effects particles on health other species. There void research toxicity airborne upon inhalation, toxicological future. Further needed determine influence pulmonary diseases.

Language: Английский

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Sustainable transformation of end-of-life wind turbine blades: Advancing clean energy solutions in civil engineering through recycling and upcycling

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 426, P. 139184 - 139184

Published: Oct. 3, 2023

Language: Английский

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Photocatalytic production of ethylene and propionic acid from plastic waste by titania-supported atomically dispersed Pd species

Science Advances, Journal Year: 2023, Volume and Issue: 9(49)

Published: Dec. 8, 2023

Current chemical recycling of bulk synthetic plastic, polyethylene (PE), operates at high temperature/pressure and yields a complex mixture products. PE conversion under mild conditions with good selectivity toward value-added chemicals remains practical challenge. Here, we demonstrate an atomic engineering strategy to modify TiO 2 photocatalyst reversible Pd species for the selective ethylene (C H 4 ) propionic acid via dicarboxylic intermediates moderate conditions. -supported atomically dispersed exhibits C evolution 531.2 μmol g cat −1 hour , 408 times that pristine . The liquid product is valuable propanoic 98.8% selectivity. Plastic hydrocarbon yield 0.9% 6.3% was achieved in oxidation coupled 3 hours photoreaction. In situ spectroscopic studies confirm dual role species: electron acceptor boost charge separation/transfer efficient photoredox, mediator stabilize reaction decarboxylation.

Language: Английский

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The role of chemical and solvent-based recycling within a sustainable circular economy for plastics

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 906, P. 167586 - 167586

Published: Oct. 5, 2023

Chemical and solvent-based recycling of plastic waste may help overcome some the challenges faced by predominantly applied mechanical techniques. This study quantifies environmental impacts chemical as a function varying process parameters product composition using life cycle assessment. Furthermore, potential benefits on system level are determined. To that end, high-resolution material flow analysis is conducted for reference Switzerland, covering all main types applications. In scenario year 2040, we employ environmentally beneficial where possible convey suitable remaining streams to or processes. Applying complement maximum recycling, instead thermal treatment with energy recovery, achieve reduction in climate change impact ranging from less than 10 % almost 40 %. For achieving high benefits, proper choice configuration crucial. Dissolution depolymerization provide higher relative other processes, but can only treat certain require prior sorting into types. Pyrolysis gasification appeared have ability substantial over incineration if their output products substitute high-impact chemicals provided efficient heat transfer recovery warranted when implemented large scale. As industrial-scale plants still lacking, upscaling achievable practice highly uncertain today.

Language: Английский

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Pursuing the End-of-Life Tire Circularity: An Outlook toward the Production of Secondary Raw Materials from Tire Pyrolysis Oil

Energy & Fuels, Journal Year: 2023, Volume and Issue: 37(13), P. 8836 - 8866

Published: June 20, 2023

Pyrolysis is perceived as the missing link between management of end-of-life tires (ELTs) and tire industry because it strikes directly in transition from a linear to circular economy model toward defossilization diverse economic sectors. Tire pyrolysis oil (TPO) one most valuable interesting fractions derived ELTs. It contains chemicals including, among others, benzene, toluene, ethylbenzene, xylene, well limonene, which are some building blocks petrochemical industry. Within framework, traditional practices such direct use TPO combustion systems seem exhibit low circularity degree. Instead, production secondary raw materials that can be reused for multiple purposes associated with getting special attention. Based on above, this work aims at reviewing different pathways currently explored scientific community produce various value-added products TPO. Due similarity its properties those petroleum streams, coprocessing using existing units conventional refineries exhibits massive potential. In manner, fine-tuned according hydrocarbons market requirements. As such, discussed advantages, recent progress, challenges implementation refinery distillation, fluid catalytic cracking (FCC), hydroprocessing, steam post-treatment. These processes seen path integrate current hydrocarbon/petrochemical market.

Language: Английский

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