Microbial Fermentation of Polyethylene Terephthalate (PET) Plastic Waste for the Production of Chemicals or Electricity

Kalathil, Shafeer, Miller, Melanie and Reisner, Erwin (2022) Microbial Fermentation of Polyethylene Terephthalate (PET) Plastic Waste for the Production of Chemicals or Electricity. Angewandte Chemie International Edition. ISSN 1433-7851 (In Press)

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Official URL: https://doi.org/10.1002/anie.202211057

Abstract

Ideonella sakaiensis ( I. sakaiensis ) can grow on polyethylene terephthalate (PET) as the major carbon and energy source. Previous work has shown that PET conversion in the presence of oxygen released carbon dioxide and water while yielding adenosine triphosphate (ATP) through oxidative phosphorylation. This study demonstrates that I. sakaiensis is a facultative anaerobe that ferments PET to the feedstock chemicals acetate and ethanol in the absence of oxygen. In addition to PET, the pure monomer ethylene glycol (EG), the intermediate product ethanol, and the carbohydrate fermentation test substance maltose can also serve as fermenting substrates. Co-culturing of I. sakaiensis with the electrogenic and acetate-consuming Geobacter sulfurreducens produced electricity from PET or EG. This newly identified plastic fermentation process by I. sakaiensis pro-vides thus a novel biosynthetic route to produce high-value chemicals or electricity from plastic waste streams.

Item Type: Article
Additional Information: Funding information: This work was supported by a European Research Council (ERC) Consolidator Grant ‘MatEnSAP’ (682833, ER and MM), European Marie Sklodowska-Curie individual Fellowship (SK, GAN 744317), UKRI Cambridge Circular Plastics Centre (CirPlas, EP/S025308/1, SK and ER), Funds for Women Graduates Foundation Main Grant (MM), Research England’s Expanding Excellence in England (E3) Fund (SK).
Uncontrolled Keywords: Electrosyntrophy, Fermentation, Ideonella sakaiensis, Biosynthesis, Plastic Recycling
Subjects: F200 Materials Science
Department: Faculties > Health and Life Sciences > Applied Sciences
Depositing User: Rachel Branson
Date Deposited: 27 Sep 2022 10:05
Last Modified: 28 Oct 2022 14:30
URI: https://nrl.northumbria.ac.uk/id/eprint/50234

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