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Impacts of Syngas Composition on Anaerobic Fermentation
- Source :
- Reactions, Vol 2, Iss 25, Pp 391-407 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Energy consumption places growing demands on modern lifestyles, which have direct impacts on the world’s natural environment. To attain the levels of sustainability required to avoid further consequences of changes in the climate, alternatives for sustainable production not only of energy but also materials and chemicals must be pursued. In this respect, syngas fermentation has recently attracted much attention, particularly from industries responsible for high levels of greenhouse gas emissions. Syngas can be obtained by thermochemical conversion of biomass, animal waste, coal, municipal solid wastes and other carbonaceous materials, and its composition depends on biomass properties and gasification conditions. It is defined as a gaseous mixture of CO and H2 but, depending on those parameters, it can also contain CO2, CH4 and secondary components, such as tar, oxygen and nitrogenous compounds. Even so, raw syngas can be used by anaerobic bacteria to produce biofuels (ethanol, butanol, etc.) and biochemicals (acetic acid, butyric acid, etc.). This review updates recent work on the influence of biomass properties and gasification parameters on syngas composition and details the influence of these secondary components and CO/H2 molar ratio on microbial metabolism and product formation. Moreover, the main challenges, opportunities and current developments in syngas fermentation are highlighted in this review.
- Subjects :
- biomass gasification
syngas fermentation
business.industry
Biomass
Tar
thermo-biochemical conversion
Pulp and paper industry
hybrid processes
Chemistry
Syngas fermentation
Biofuel
General Earth and Planetary Sciences
Environmental science
Fermentation
Coal
Anaerobic bacteria
biomass composition
business
QD1-999
General Environmental Science
Syngas
Subjects
Details
- ISSN :
- 2624781X
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- Reactions
- Accession number :
- edsair.doi.dedup.....e519a6d7dbff5cbeaf71d72ba98b9656