Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
System study of carbon dioxide (CO2) capture in bio-based motor fuel production
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
2008 (English)In: Energy, ISSN 0360-5442, Vol. 33, no 2, 352-361 p.Article in journal (Refereed) Published
Abstract [en]

A number of different technologies for producing renewable motor fuels have been studied; some effects of applying carbon dioxide (CO2) capture to the production of renewable motor fuels are described in this paper. Some of the technologies studied are well suited for CO2 capture. However, it is shown that the advantages with CO2 capture for these technologies are not enough to offset their shortcomings described in previous studies, which show that the largest CO2 reduction from biomass in Sweden may be achieved by producing fuel pellets for coal substitution or using the biomass in combined heat and power plants. A conclusion of the present paper is that even with v capture added to the respective technology, it is inefficient to use renewable resources for motor fuel production if the aim is to achieve as high CO2 emission reduction as possible per input of biomass. Therefore, the large Swedish subsidies of the production of motor fuels appear sub-optimal, also when the possibility of CO2 capture is considered. Nevertheless, incorporating CO2 capture in the production of renewable motor fuels from biomass might be a cost-effective way of reducing CO2 emissions.

Place, publisher, year, edition, pages
2008. Vol. 33, no 2, 352-361 p.
Keyword [en]
biomass; CO2 reduction; fermentation; anaerobic digestion
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-9364DOI: 10.1016/j.energy.2007.09.005ISI: 000253574700029Scopus ID: 2-s2.0-38149135080OAI: oai:DiVA.org:kth-9364DiVA: diva2:113641
Note
QC 20100823Available from: 2008-10-23 Created: 2008-10-23 Last updated: 2010-08-23Bibliographically approved
In thesis
1. A trinity of sense: Using biomass in the transport sector for climate change mitigation
Open this publication in new window or tab >>A trinity of sense: Using biomass in the transport sector for climate change mitigation
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis analyses two strategies for decreasing anthropogenic carbon dioxide (CO2) emissions: to capture and store CO2, and to increase the use of biomass. First, two concepts for CO2 capture with low capture penalties are evaluated. The concepts are an integrated gasification combined cycle where the oxygen is supplied by a membrane reactor, and a hybrid cycle where the CO2 is captured at elevated pressure. Although the cycles have comparatively high efficiencies and low penalties, they illustrate the inevitable fact that capturing CO2 will always induce significant efficiency penalties. Other strategies are also needed if CO2 emissions are to be forcefully decreased. An alternative is increased use of biomass, which partially could be used for production of motor fuels (biofuels). This work examines arguments for directing biomass to the transport sector, analyses how biofuels (and also some other means) may be used to reduce CO2 emissions and increase security of motor fuel supply. The thesis also explores the possibility of reducing CO2 emissions by comparatively easy and cost-efficient CO2 capture from concentrated CO2 streams available in some types of biofuel plants. Many conclusions of the thesis could be associated with either of three meanings of the word sense: First, there is reason in biofuel production – since it e.g. reduces oil dependence. From a climate change mitigation perspective, however, motor fuel production is often a CO2-inefficient use of biomass, but the thesis explores how biofuels’ climate change mitigation effects may be increased by introducing low-cost CO2 capture. Second, the Swedish promotion of biofuels appears to have been governed more by a feeling for attaining other goals than striving for curbing climate change. Third, it seems to have been the prevalent opinion among politicians that the advantages of biofuels – among them their climate change mitigation benefits – are far greater than the disadvantages and that they should be promoted. Another conclusion of the thesis is that biofuels alone are not enough to drastically decrease transport CO2 emissions; a variety of measures are needed such as fuels from renewable electricity and improvements of vehicle fuel economy.

Place, publisher, year, edition, pages
Stockholm: KTH, 2008. 68 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2008:62
Keyword
Biofuel, biomass, carbon dioxide capture and storage, energy systems, ethanol, hybrid cycle, mixed conducting membrane reactor, pressurized fluidized bed combustion, Sweden, transport
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-9292 (URN)978-91-7415-107-7 (ISBN)
Public defence
2008-11-07, F3, KTKH, Lindstedtsvägen 26, Stockholm, 13:30 (English)
Opponent
Supervisors
Note
QC 20100823Available from: 2008-10-22 Created: 2008-10-16 Last updated: 2010-08-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lindfeldt, Erik G.Westermark, Mats O.
By organisation
Energy Processes
In the same journal
Energy
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 141 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf