Rational Design of Chemical Catalysis for Plastic Recycling

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(8), P. 4659 - 4679

Published: April 5, 2022

Plastics are indispensable, but their pollution is triggering a global environmental crisis. Although many end-of-life catalytic options have involved converting plastics into valuable products, deep understanding of the relationship between polymer structure and recycling performance significant urgently needed. Here, we start with primer polymeric chain structures on chemical discuss structure–performance polymer, catalyst, reaction. Specifically, development challenges re/upcycling waste PET polyolefins discussed in-depth. In addition, also present some prospects for innovations in catalyst synthesis reaction engineering basis relationship. The discussion ends brief perspective future plastic re/upcycling. Overall, intelligent catalysis design necessary incentivizing relieving burden plastics.

Language: Английский

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Possibility Routes for Textile Recycling Technology

Polymers, Journal Year: 2021, Volume and Issue: 13(21), P. 3834 - 3834

Published: Nov. 6, 2021

The fashion industry contributes to a significant environmental issue due the increasing production and needs of industry. proactive efforts toward developing more sustainable process via textile recycling has become preferable solution. This urgent important need develop cheap efficient methods for waste led research community’s development various methods. can be categorized into chemical mechanical paper provides an overview state art regarding different types technologies along with their current challenges limitations. critical parameters determining performance are summarized discussed focus on in (pyrolysis, enzymatic hydrolysis, hydrothermal, ammonolysis, glycolysis). Textile been demonstrated re-spun yarn (re-woven or knitted) by spinning carded mixed shoddy through recycling. On other hand, it is difficult recycle some textiles means hydrolysis; high product yield shown under mild temperatures. Furthermore, emergence existing technology such as internet things (IoT) being implemented enable sorting identification also discussed. Moreover, we provide outlook upcoming technological developments that will contribute facilitating circular economy, allowing process.

Language: Английский

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Toward Sustainable Wearable Electronic Textiles

ACS Nano, Journal Year: 2022, Volume and Issue: 16(12), P. 19755 - 19788

Published: Nov. 30, 2022

Smart wearable electronic textiles (e-textiles) that can detect and differentiate multiple stimuli, while also collecting storing the diverse array of data signals using highly innovative, multifunctional, intelligent garments, are great value for personalized healthcare applications. However, material performance sustainability, complicated difficult e-textile fabrication methods, their limited end-of-life processability major challenges to wide adoption e-textiles. In this review, we explore potential sustainable materials, manufacturing techniques, end-of-the-life processes developing eco-friendly addition, survey current state-of-the-art fibers materials (i.e., conductors, semiconductors, dielectrics) serve as different components in e-textiles then provide an overview environmentally friendly digital techniques such which involve less or no water utilization, combined with a reduction both waste energy consumption. Furthermore, standardized parameters evaluating sustainability established, life cycle analysis, biodegradability, recyclability. Finally, discuss development trends, well future research directions include integrated product design approach based on use processes, effective strategy manufacture next generation smart be either recycled value-added products decomposed landfill without any negative environmental impacts.

Language: Английский

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A comprehensive and critical review on key elements to implement enzymatic PET depolymerization for recycling purposes

Biotechnology Advances, Journal Year: 2021, Volume and Issue: 52, P. 107811 - 107811

Published: July 29, 2021

Language: Английский

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Current Prospects for Plastic Waste Treatment

Polymers, Journal Year: 2022, Volume and Issue: 14(15), P. 3133 - 3133

Published: July 31, 2022

The excessive amount of global plastic produced over the past century, together with poor waste management, has raised concerns about environmental sustainability. Plastic recycling become a practical approach for diminishing and maintaining sustainability among management methods. Chemical mechanical are typical approaches to waste, simple process, low cost, environmentally friendly potential profitability. Several materials, such as polypropylene, polystyrene, polyvinyl chloride, high-density polyethylene, low-density polyurethanes, can be recycled chemical approaches. Nevertheless, due waste’s varying physical properties, separation becomes challenge. Hence, reliable effective technology is critical increasing value rate. Integrating technologies would an efficient method reducing accumulation contaminants by especially in industrial uses. This review addresses recent advances technology, mainly recycling. article also discusses current various materials.

Language: Английский

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Polyethylene terephthalate (PET) recycling: A review

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100673 - 100673

Published: Feb. 23, 2024

It is difficult to reuse wastes from polymers due the mismatch between amount of contaminants and secondary quality feed. This type operation much more expensive cost-effective than production polymer raw materials latest materials. However, recyclable beneficial if used extensively in various concrete products wood-polymer boards. done only cleaning sorting are not particularly important for products. Polyethylene terephthalate (PET) a widely industries its excellent physical chemical properties. Besides, increasing use PET has led global crisis waste management, as improper disposal caused significant environmental damage. major source accumulated landfills, address this issue, recycling methods have evolved. In regard, present review examines techniques involved PET. Conventional influence diverse depolymerization reaction variables were discussed, upsides downsides each technique considered. The summarizes advances technologies plastic waste, focusing on bio-recycling PET, aiming sustainable, economical solutions circular economy.

Language: Английский

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Recycling of Post-Consumer Packaging Materials into New Food Packaging Applications—Critical Review of the European Approach and Future Perspectives

Sustainability, Journal Year: 2022, Volume and Issue: 14(2), P. 824 - 824

Published: Jan. 12, 2022

The European strategy for plastics, as part of the EU’s circular economy action plan, should support reduction in plastic waste. One key element this plan is improvement economics and quality recycled plastics. In addition, an important goal that by 2030, all plastics packaging placed on EU market must either be reusable or can a cost-effective manner. This means that, at end, closed-loop recycling food materials established. However, use recyclates not result less severe preventive consumer protection materials. may lead to conservative evaluation authorities post-consumer applications. On other hand, over-conservatism might over-protect generate insurmountable barriers application and, hence, counteract targets economy. objective review provide insight into applied direct contact food. Safety assessment criteria developed Food Authority EFSA will presented, explained, critically discussed.

Language: Английский

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A focused review on recycling and hydrolysis techniques of polyethylene terephthalate

Polymer Engineering and Science, Journal Year: 2023, Volume and Issue: 63(9), P. 2651 - 2674

Published: June 21, 2023

Abstract Polyethylene terephthalate (PET) is used in textile and packaging industries. The main source of PET production fossil fuels with limited capacity. Also, products are single use that transform into high volumes wastes, causing ecosystem problems. Recycling proposed to confront this challenge. four major recycling techniques mechanical, chemical, pyrolysis, enzymatic. Mechanical, enzymatic have constrained capabilities manage waste. Chemical the potential path expanding waste possibility upcycling addressing dirty streams. Several chemical methods introduced discussed literature. five glycolysis, alcoholysis, aminolysis, ammonolysis, hydrolysis. This review describes depolymerization via these introduces hydrolysis as one can depolymerize an organic‐free solvent environment. Hydrolysis tolerates mixed wastes streams including copolymers. It helps avoid challenges attributed using organic solvents reaction systems. Moreover, produces terephthalic acid, monomer, which has recently gained attention initiative monomer for production. focuses on three forms hydrolysis—alkaline, neutral, by presenting background studies, issued patents, recent trends application

Language: Английский

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Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(7), P. 4865 - 4926

Published: March 18, 2024

Rapid industrialization and development have led to a tremendous increase in the use of various types plastic commodities daily life. For past several years, pollution has become global issue, posing serious threat mankind. The primary issue with increasing is lack proper management which created huge havoc environment. From initial phase waste management, been discarded, recycled, downcycled, or dumped into landfills large proportion, causing extreme damage ecosystem. Conventionally, treated via thermal processes such as pyrolysis incineration plants require amount capital and, therefore, harms aim circular economy. Chemical upcycling gaining attention high-potential catalytic strategy convert plastics, polyethylene terephthalate, polyethylene, polystyrene, etc. fuels, functionalized polymers, other value-added chemicals having direct impact on affordability viability. In this review, we focused photocatalysis, electrocatalysis, photoelectrocatalysis effective efficient technologies. These approaches can lower dependence nonrenewable resources are more environmentally friendly contrast conventional approaches. This review elaborately discusses pros cons provides detailed overview potential renewable energy-driven for conversion wastes valuable fuels commodity chemicals, along challenges future directions emerging approach treatment.

Language: Английский

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Recycling and high-value utilization of polyethylene terephthalate wastes: A review

Environmental Research, Journal Year: 2024, Volume and Issue: 249, P. 118428 - 118428

Published: Feb. 5, 2024

Language: Английский

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