Biofuels and CO2neutrality: an opportunity
Abstract
CO2-neutral bioprocesses are of immanent concern and can be coupled by using integrated bioprocess and biofuel production systems. Existing biofuel generations are, therefore, reclassified according to the current possible bioprocessing routes. Only the first biofuel generation has been successfully carried into a commercial scale, while the second is still being improved at laboratory scale or in pilot-scale processes. Biodiesel and biohydrogen, as third- and fourth-generation biofuels, respectively, are also being studied at the laboratory scale. Here, we introduce the fifth biofuel generation, which is based on biological CH4 production from gaseous raw materials. The integration of bioprocess systems and the coupling between different biofuel generations under CO2 neutrality is analyzed and presented to be of great interest for industry and science. Value-added production (i.e., recombinant proteins) can be coupled to CO2-neutral integrated biofuel production systems and, hence, integration of different biofuel generations within a biorefinery concept could be translated into a reality.
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Although biofuels are still producing CO2, the carbon footprint is smaller as biomass feedstocks act as a carbon sink by absorbing CO2 for photosynthesis during crop growth.
“Although biofuels are still producing CO 2 , the carbon footprint is smaller as biomass feedstocks act as a carbon sink by absorbing CO 2 for photosynthesis during crop growth [40,75].”
From Investigation of Biofuel as a Potential Renewable Energy Source (2021) · cites this paper as [75]
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Investigation of Biofuel as a Potential Renewable Energy Source
Khan, M. A. H., Bonifacio, S., Clowes, J., Foulds, A., Holland, R., Matthews, J. C., Percival, C. J., & Shallcross, D. E. (2021) · Atmosphere · doi:10.3390/atmos12101289 · Cited by 140 · see citing works
- Authors
- Porqueras, E. M., Rittmann, S., & Herwig, C.
- Affiliations
- TU Wien (AT)
- Venue
- Biofuels
- Publisher
- Informa UK Limited
- Published
- 2012-07
- Volume
- 3
- Issue
- 4
- Pages
- 413-426
- ISSN
- 1759-7269 (ISSN-L)
- 1759-7277
- OpenAlex
- W2062421849
- Cited by
- 28
- References
- 68
- Citations by year
- 2026: 1 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 2 · 2018: 5 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 4
- FWCI
- 1.15
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biofuels (publishedVersion)
- Funders
- Österreichische Forschungsförderungsgesellschaft
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Keywords
- CO2 neutrality, biofuel generations, biogas production, biomethane production, biorefinery, value-added production, recombinant protein, biodiesel, biohydrogen
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