Ethanol production from syngas

Kennes-Veiga, David M.; Fernández‐Blanco, Carla; Veiga, María C.; Kennes, Christian

doi:10.1016/b978-0-323-91878-7.00013-7

Cited by 2 publications

(2 citation statements)

References 66 publications

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“…The CO required for this reaction can be obtained from synthesis gas (i.e., CO and H 2 , mainly), as in many other catalytic production processes, e.g., the production of various alcohols [ 15 , 16 ]. The methanol used in the catalytic production of acetic acid is also often obtained from syngas.…”

Section: Chemical Synthesis Of Scfasmentioning

confidence: 99%

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Tomás-Pejó,

González-Fernández,

Greses

et al. 2023

Biotechnol Biofuels

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Carboxylic acids have become interesting platform molecules in the last years due to their versatility to act as carbon sources for different microorganisms or as precursors for the chemical industry. Among carboxylic acids, short-chain fatty acids (SCFAs) such as acetic, propionic, butyric, valeric, and caproic acids can be biotechnologically produced in an anaerobic fermentation process from lignocellulose or other organic wastes of agricultural, industrial, or municipal origin. The biosynthesis of SCFAs is advantageous compared to chemical synthesis, since the latter relies on fossil-derived raw materials, expensive and toxic catalysts and harsh process conditions. This review article gives an overview on biosynthesis of SCFAs from complex waste products. Different applications of SCFAs are explored and how these acids can be considered as a source of bioproducts, aiming at the development of a circular economy. The use of SCFAs as platform molecules requires adequate concentration and separation processes that are also addressed in this review. Various microorganisms such as bacteria or oleaginous yeasts can efficiently use SCFA mixtures derived from anaerobic fermentation, an attribute that can be exploited in microbial electrolytic cells or to produce biopolymers such as microbial oils or polyhydroxyalkanoates. Promising technologies for the microbial conversion of SCFAs into bioproducts are outlined with recent examples, highlighting SCFAs as interesting platform molecules for the development of future bioeconomy.

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Section: Chemical Synthesis Of Scfasmentioning

confidence: 99%

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Tomás-Pejó,

González-Fernández,

Greses

et al. 2023

Biotechnol Biofuels

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“…Ethanol and some other alcohols can either be produced through chemical catalytic processes or through bioprocesses (Kennes‐Veiga et al, 2023 ). Today, a considerable amount of bioethanol is produced worldwide as a renewable fuel from the fermentation of carbohydrates available in maize, sugarcane or wheat, among others.…”

Section: Ethanol and Higher Alcohols Production From C ...mentioning

confidence: 99%

Production of biofuels from C₁‐gases with Clostridium and related bacteria—Recent advances

Fernández‐Blanco¹,

Robles‐Iglesias²,

Naveira‐Pazos³

et al. 2023

Microbial Biotechnology

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Clostridium spp. are suitable for the bioconversion of C 1 ‐gases (e.g., CO 2 , CO and syngas) into different bioproducts. These products can be used as biofuels and are reviewed here, focusing on ethanol, butanol and hexanol, mainly. The production of higher alcohols (e.g., butanol and hexanol) has hardly been reviewed. Parameters affecting the optimization of the bioconversion process and bioreactor performance are addressed as well as the pathways involved in these bioconversions. New aspects, such as mixotrophy and sugar versus gas fermentation, are also reviewed. In addition, Clostridia can also produce higher alcohols from the integration of the Wood‐Ljungdahl pathway and the reverse ß‐oxidation pathway, which has also not yet been comprehensively reviewed. In the latter process, the acetogen uses the reducing power of CO/syngas to reduce C 4 or C 6 fatty acids, previously produced by a chain elongating microorganism (commonly Clostridium kluyveri ), into the corresponding bioalcohol.

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Ethanol production from syngas

Cited by 2 publications

References 66 publications

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Production of biofuels from C₁‐gases with Clostridium and related bacteria—Recent advances

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Ethanol production from syngas

Cited by 2 publications

References 66 publications

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals

Production of biofuels from C1‐gases with Clostridium and related bacteria—Recent advances

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Production of biofuels from C₁‐gases with Clostridium and related bacteria—Recent advances