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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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) |
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syngas fermentation polyhydroxyalkanoates carbon monoxide dehydrogenase hydrogenase Organic chemistry QD241-441 |
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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 |
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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 |
_version_ |
1718410691632693248 |