Syngas Fermentation for the Production of Bio-Based Polymers: A Review

Increasing environmental awareness among the general public and legislators has driven this modern era to seek alternatives to fossil-derived products such as fuel and plastics. Addressing environmental issues through bio-based products driven from microbial fermentation of synthetic gas (syngas) co...

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Autores principales: Nirpesh Dhakal, Bishnu Acharya
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/02fbf96e12c240b4ab91fdd97965d661
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spelling oai:doaj.org-article:02fbf96e12c240b4ab91fdd97965d6612021-11-25T18:48:19ZSyngas Fermentation for the Production of Bio-Based Polymers: A Review10.3390/polym132239172073-4360https://doaj.org/article/02fbf96e12c240b4ab91fdd97965d6612021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3917https://doaj.org/toc/2073-4360Increasing environmental awareness among the general public and legislators has driven this modern era to seek alternatives to fossil-derived products such as fuel and plastics. Addressing environmental issues through bio-based products driven from microbial fermentation of synthetic gas (syngas) could be a future endeavor, as this could result in both fuel and plastic in the form of bioethanol and polyhydroxyalkanoates (PHA). Abundant availability in the form of cellulosic, lignocellulosic, and other organic and inorganic wastes presents syngas catalysis as an interesting topic for commercialization. Fascination with syngas fermentation is trending, as it addresses the limitations of conventional technologies like direct biochemical conversion and Fischer–Tropsch’s method for the utilization of lignocellulosic biomass. A plethora of microbial strains is available for syngas fermentation and PHA production, which could be exploited either in an axenic form or in a mixed culture. These microbes constitute diverse biochemical pathways supported by the activity of hydrogenase and carbon monoxide dehydrogenase (CODH), thus resulting in product diversity. There are always possibilities of enzymatic regulation and/or gene tailoring to enhance the process’s effectiveness. PHA productivity drags the techno-economical perspective of syngas fermentation, and this is further influenced by syngas impurities, gas–liquid mass transfer (GLMT), substrate or product inhibition, downstream processing, etc. Product variation and valorization could improve the economical perspective and positively impact commercial sustainability. Moreover, choices of single-stage or multi-stage fermentation processes upon product specification followed by microbial selection could be perceptively optimized.Nirpesh DhakalBishnu AcharyaMDPI AGarticlesyngasfermentationpolyhydroxyalkanoatescarbon monoxide dehydrogenasehydrogenaseOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3917, p 3917 (2021)
institution DOAJ
collection DOAJ
language EN
topic syngas
fermentation
polyhydroxyalkanoates
carbon monoxide dehydrogenase
hydrogenase
Organic chemistry
QD241-441
spellingShingle syngas
fermentation
polyhydroxyalkanoates
carbon monoxide dehydrogenase
hydrogenase
Organic chemistry
QD241-441
Nirpesh Dhakal
Bishnu Acharya
Syngas Fermentation for the Production of Bio-Based Polymers: A Review
description Increasing environmental awareness among the general public and legislators has driven this modern era to seek alternatives to fossil-derived products such as fuel and plastics. Addressing environmental issues through bio-based products driven from microbial fermentation of synthetic gas (syngas) could be a future endeavor, as this could result in both fuel and plastic in the form of bioethanol and polyhydroxyalkanoates (PHA). Abundant availability in the form of cellulosic, lignocellulosic, and other organic and inorganic wastes presents syngas catalysis as an interesting topic for commercialization. Fascination with syngas fermentation is trending, as it addresses the limitations of conventional technologies like direct biochemical conversion and Fischer–Tropsch’s method for the utilization of lignocellulosic biomass. A plethora of microbial strains is available for syngas fermentation and PHA production, which could be exploited either in an axenic form or in a mixed culture. These microbes constitute diverse biochemical pathways supported by the activity of hydrogenase and carbon monoxide dehydrogenase (CODH), thus resulting in product diversity. There are always possibilities of enzymatic regulation and/or gene tailoring to enhance the process’s effectiveness. PHA productivity drags the techno-economical perspective of syngas fermentation, and this is further influenced by syngas impurities, gas–liquid mass transfer (GLMT), substrate or product inhibition, downstream processing, etc. Product variation and valorization could improve the economical perspective and positively impact commercial sustainability. Moreover, choices of single-stage or multi-stage fermentation processes upon product specification followed by microbial selection could be perceptively optimized.
format article
author Nirpesh Dhakal
Bishnu Acharya
author_facet Nirpesh Dhakal
Bishnu Acharya
author_sort Nirpesh Dhakal
title Syngas Fermentation for the Production of Bio-Based Polymers: A Review
title_short Syngas Fermentation for the Production of Bio-Based Polymers: A Review
title_full Syngas Fermentation for the Production of Bio-Based Polymers: A Review
title_fullStr Syngas Fermentation for the Production of Bio-Based Polymers: A Review
title_full_unstemmed Syngas Fermentation for the Production of Bio-Based Polymers: A Review
title_sort syngas fermentation for the production of bio-based polymers: a review
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/02fbf96e12c240b4ab91fdd97965d661
work_keys_str_mv AT nirpeshdhakal syngasfermentationfortheproductionofbiobasedpolymersareview
AT bishnuacharya syngasfermentationfortheproductionofbiobasedpolymersareview
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