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Title: Mixed plastics waste valorization through tandem chemical oxidation and biological funneling

Journal Article · · Science
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  1. National Renewable Energy Lab. (NREL), Golden, CO (United States); BOTTLE Consortium, Golden, CO (United States)
  2. BOTTLE Consortium, Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Univ. of Wisconsin, Madison, WI (United States)

Mixed plastics waste represents an abundant and largely untapped feedstock for the production of valuable products. The chemical diversity and complexity of these materials, however, present major barriers to realizing this opportunity. In this work, we show that metal-catalyzed autoxidation depolymerizes comingled polymers into a mixture of oxygenated small molecules that are advantaged substrates for biological conversion. We engineer a robust soil bacterium, Pseudomonas putida, to funnel these oxygenated compounds into a single exemplary chemical product, either ..beta..-ketoadipate or polyhydroxyalkanoates. This hybrid process establishes a strategy for the selective conversion of mixed plastics waste into useful chemical products.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
Grant/Contract Number:
FG02-05ER15690; AC36-08GO28308; AC05-00OR22725
OSTI ID:
1906246
Alternate ID(s):
OSTI ID: 1900007; OSTI ID: 1997773
Report Number(s):
NREL/JA-2A00-82284
Journal Information:
Science, Vol. 378, Issue 6616; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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