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

Myung Jong Kang; Hee Taek Kim; Min Woo Lee; Kyung An Kim; Tae Uk Khang; Hye Min Song; Si Jae Park; Jeong Chan Joo; Hyun Gil Cha

doi:10.1039/d0gc00007h

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

Myung Jong Kang, Hee Taek Kim, Min Woo Lee, Kyung An Kim, Tae Uk Khang, Hye Min Song, Si Jae Park, Jeong Chan Joo, Hyun Gil Cha

Department of Chemical Engineering & Materials Science

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

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 performedviamicrowave-assisted hydrolysis using biomass-derived SiO₂catalysts 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 recombinantEscherichia colistrains expressingtphAabcandtphBgenes for TPA degradation into protocatechuic acid (PCA) through 3,4-dihydroxy-cyclohexa-1,5-diene-1,4-dicarboxylic acid (DCD) (E. coliPCA strain) and usingligABCgenes to convert PCA to PDC through 4-carboxy-2-hydroxymuconate semialdehyde (CHMS) (E. coliPDC_PCAstrain). Based on the high chemical depolymerisation of PET waste into TPA (over 97% efficiency), the double-catalyst system composed of theE. coliPCA 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.

Original language	English
Pages (from-to)	3461-3469
Number of pages	9
Journal	Green Chemistry
Volume	22
Issue number	11
DOIs	https://doi.org/10.1039/d0gc00007h
State	Published - 7 Jun 2020

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

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 performedviamicrowave-assisted hydrolysis using biomass-derived SiO2catalysts 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 recombinantEscherichia colistrains expressingtphAabcandtphBgenes for TPA degradation into protocatechuic acid (PCA) through 3,4-dihydroxy-cyclohexa-1,5-diene-1,4-dicarboxylic acid (DCD) (E. coliPCA strain) and usingligABCgenes to convert PCA to PDC through 4-carboxy-2-hydroxymuconate semialdehyde (CHMS) (E. coliPDCPCAstrain). Based on the high chemical depolymerisation of PET waste into TPA (over 97% efficiency), the double-catalyst system composed of theE. coliPCA 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.",

author = "Kang, {Myung Jong} and Kim, {Hee Taek} and Lee, {Min Woo} and Kim, {Kyung An} and Khang, {Tae Uk} and Song, {Hye Min} and Park, {Si Jae} and Joo, {Jeong Chan} and Cha, {Hyun Gil}",

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AU - Kim, Hee Taek

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AU - Kim, Kyung An

AU - Khang, Tae Uk

AU - Song, Hye Min

AU - Park, Si Jae

AU - Joo, Jeong Chan

AU - Cha, Hyun Gil

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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

Abstract

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