Techno-economic, life-cycle, and socioeconomic impact analysis of enzymatic recycling of poly(ethylene terephthalate)

Singh, Avantika; Rorrer, Nicholas A.; Nicholson, Scott; Erickson, Erika; DesVeaux, Jason S.; Avelino, André Fernandes Tomon; Lamers, Patrick; Bhatt, Arpit; Zhang, Yimin; Avery, Greg; Tao, Ling; Pickford, Andrew R.; Carpenter, Alberta; McGeehan, J.E.; Beckham, Gregg T.

doi:10.1016/j.joule.2021.06.015

Cited by 187 publications

(256 citation statements)

References 92 publications

(109 reference statements)

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“…This enzyme group also serves as a representative set of catalysts to be further rened by evolution or engineering approaches for biotechnological application. 52,53,55,56 Though not pursued here, the exibility and throughput of this assay would be ideal for use comparing the activity of wild-type enzymes to such a panel of mutants against native or non-native substrates. Additionally, we examined commercial esterases, which may better simulate the type of highly diverse enzyme sets obtained in a library screen or an environmental sample.…”

Section: Discussionmentioning

confidence: 99%

A flexible kinetic assay efficiently sorts prospective biocatalysts for PET plastic subunit hydrolysis

et al. 2022

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Section: Discussionmentioning

confidence: 99%

A flexible kinetic assay efficiently sorts prospective biocatalysts for PET plastic subunit hydrolysis

et al. 2022

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“…The hydrocarbon-based polymer’s life cycle begins with the extraction of crude oil and the cracking of the extracted oil. Following crude oil extraction, including resin manufacture, related gases are converted into ethylene, naphtha to benzene and ethylene oxide, ethylene oxide to ethylene glycol, and finally to PET [ 41 ].…”

Section: Methodsmentioning

confidence: 99%

The Cradle-to-Cradle Life Cycle Assessment of Polyethylene terephthalate: Environmental Perspective

et al. 2022

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Over the last several years, the number of concepts and technologies enabling the production of environmentally friendly products (including materials, consumables, and services) has expanded. One of these ways is cradle-to-cradle (C2C) certifiedTM. Life cycle assessment (LCA) technique is used to highlight the advantages of C2C and recycling as a method for reducing plastic pollution and fossil depletion by indicating the research limitations and gaps from an environmental perspective. Also, it estimates the resources requirements and focuses on sound products and processes. The C2C life cycle measurements for petroleum-based poly (ethylene terephthalate) (PET) bottles, with an emphasis on different end-of-life options for recycling, were taken for mainland China, in brief. It is considered that the product is manufactured through the extraction of crude oil into ethylene glycol and terephthalic acid. The CML analysis method was used in the LCIA for the selected midpoint impact categories. LCA of the product has shown a drastic aftermath in terms of environmental impacts and energy use. But the estimation of these consequences is always dependent on the system and boundary conditions that were evaluated throughout the study. The impacts that burden the environment are with the extraction of raw material, resin, and final product production. Minor influences occurred due to the waste recycling process. This suggests that waste degradation is the key process to reduce the environmental impacts of the production systems. Lowering a product’s environmental impact can be accomplished in a number of ways, including reducing the amount of materials used or choosing materials with a minimal environmental impact during manufacture processes.

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“…Prospectively, due to restrictions and concerns over the use of GMOs worldwide, safer and easier to safely handle modified proteins may become an alternative to the long-known bioremediation or biological recycling, which seems to be a distant goal when using GMMs. The application of enzymatic recycling with the use of enhanced mutants of PETase cutinase may be one solution in the future to reduce the level of contamination, and to our knowledge, such application is one of the latest developments in this field ( Singh et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Current Knowledge on Polyethylene Terephthalate Degradation by Genetically Modified Microorganisms

Urbanek

Kosiorowska

Mirończuk

2021

Front. Bioeng. Biotechnol.

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The global production of polyethylene terephthalate (PET) is estimated to reach 87.16 million metric tons by 2022. After a single use, a remarkable part of PET is accumulated in the natural environment as plastic waste. Due to high hydrophobicity and high molecular weight, PET is hardly biodegraded by wild-type microorganisms. To solve the global problem of uncontrolled pollution by PET, the degradation of plastic by genetically modified microorganisms has become a promising alternative for the plastic circular economy. In recent years many studies have been conducted to improve the microbial capacity for PET degradation. In this review, we summarize the current knowledge about metabolic engineering of microorganisms and protein engineering for increased biodegradation of PET. The focus is on mutations introduced to the enzymes of the hydrolase class—PETase, MHETase and cutinase—which in the last few years have attracted growing interest for the PET degradation processes. The modifications described in this work summarize the results obtained so far on the hydrolysis of polyethylene terephthalate based on the released degradation products of this polymer.

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Techno-economic, life-cycle, and socioeconomic impact analysis of enzymatic recycling of poly(ethylene terephthalate)

Cited by 187 publications

References 92 publications

A flexible kinetic assay efficiently sorts prospective biocatalysts for PET plastic subunit hydrolysis

A flexible kinetic assay efficiently sorts prospective biocatalysts for PET plastic subunit hydrolysis

The Cradle-to-Cradle Life Cycle Assessment of Polyethylene terephthalate: Environmental Perspective

Current Knowledge on Polyethylene Terephthalate Degradation by Genetically Modified Microorganisms

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