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A chemo-microbial hybrid process for the production of 2-pyrone-4,6-dicarboxylic acid as a promising bioplastic monomer from PET waste

Title
A chemo-microbial hybrid process for the production of 2-pyrone-4,6-dicarboxylic acid as a promising bioplastic monomer from PET waste
Authors
Kang, Myung JongKim, Hee TaekLee, Min-WooKim, Kyung-AnKhang, Tae UkSong, Hye MinPark, Si JaeJoo, Jeong ChanCha, Hyun Gil
Ewha Authors
박시재
SCOPUS Author ID
박시재scopus
Issue Date
2020
Journal Title
GREEN CHEMISTRY
ISSN
1463-9262JCR Link

1463-9270JCR Link
Citation
GREEN CHEMISTRY vol. 22, no. 11, pp. 3461 - 3469
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
In this study, 2-pyrone-4,6-dicarboxylic acid (PDC), a valuable monomer for bio-degradable plastics, was synthesised using terephthalic acid (TPA) derived from PET waste by a comprehensive chemo-microbial hybrid process. Depolymerisation of PET into TPA was performed via microwave-assisted hydrolysis using biomass-derived SiO2 catalysts with thiol functionalisation. The increased PET hydrolysis efficiency was investigated by reaction kinetics studies. The conversion of TPA obtained by depolymerisation of PET waste into PDC was achieved using two recombinant Escherichia coli strains expressing tphAabc and tphB genes for TPA degradation into protocatechuic acid (PCA) through 3,4-dihydroxy-cyclohexa-1,5-diene-1,4-dicarboxylic acid (DCD) (E. coli PCA strain) and using ligABC genes to convert PCA to PDC through 4-carboxy-2-hydroxymuconate semialdehyde (CHMS) (E. coli PDCPCA strain). Based on the high chemical depolymerisation of PET waste into TPA (over 97% efficiency), the double-catalyst system composed of the E. coli PCA strains with TPA degradation module and PDC synthesis module enables PET waste to be used in the PDC production platform with 96.08% of the overall efficiency.
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DOI
10.1039/d0gc00007h
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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