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Title: Biological Upcycling of Plastics Waste

Journal Article · · Annual Review of Chemical and Biomolecular Engineering
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Univ. of Delaware, Newark, DE (United States); University of Delaware
  2. Univ. of Delaware, Newark, DE (United States)

Plastic wastes accumulate in the environment, impacting wildlife and human health and representing a significant pool of inexpensive waste carbon that could form feedstock for the sustainable production of commodity chemicals, monomers, and specialty chemicals. Current mechanical recycling technologies are not economically attractive due to the lower-quality plastics that are produced in each iteration. Thus, the development of a plastics economy requires a solution that can deconstruct plastics and generate value from the deconstruction products. Biological systems can provide such value by allowing for the processing of mixed plastics waste streams via enzymatic specificity and using engineered metabolic pathways to produce upcycling targets. Here, we focus on the use of biological systems for waste plastics deconstruction and upcycling. We highlight documented and predicted mechanisms through which plastics are biologically deconstructed and assimilated and provide examples of upcycled products from biological systems. Additionally, we detail current challenges in the field, including the discovery and development of microorganisms and enzymes for deconstructing non–polyethylene terephthalate plastics, the selection of appropriate target molecules to incentivize development of a plastic bioeconomy, and the selection of microbial chassis for the valorization of deconstruction products.

Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science (BSS)
Grant/Contract Number:
SC0022018; SC0023085
OSTI ID:
2341406
Journal Information:
Annual Review of Chemical and Biomolecular Engineering, Journal Name: Annual Review of Chemical and Biomolecular Engineering Vol. 15; ISSN 1947-5438
Publisher:
Annual ReviewsCopyright Statement
Country of Publication:
United States
Language:
English

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