Biofuels from agricultural biomass – Land use change in Swedish perspective

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Ahlgren, SerinaSwedish University of Agricultural Sciences, Uppsala (author)

Biofuels from agricultural biomass – Land use change in Swedish perspective

BookEnglish2017

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2017
28 s.

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LIBRIS-ID:oai:lup.lub.lu.se:32d8c0be-6d3c-4172-9a2f-5bf7e4a258c8
https://lup.lub.lu.se/record/32d8c0be-6d3c-4172-9a2f-5bf7e4a258c8URI

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Language:English
Summary in:English

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Subject category:rap swepub-publicationtype
Subject category:vet swepub-contenttype

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f3 2017:13

Notes

The Swedish parliament has decided that by 2045, Sweden will not be a net emitter of greenhouse gases. There is also a goal to have a fossil fuel free transport sector by 2030. However, the transport sector is still dominated by fossil fuels and many efforts are needed to lower emissions. Sweden has a relatively high share of biofuels, around 20% of the energy use in domestictransportation. However, almost 90% of these fuels are imported or produced from imported feedstock.In this study it was investigated whether and how the forecast biofuel demand for 2030 (20 TWh) can be met by biofuels produced from domestic feedstock. The scope was narrowed to biomass that does not cause land use change effects, since the European Commission has communicated that useof biofuels based on feedstock which could be used instead for food or feed will not be supported in the future. The reason for this policy decision is that increased biofuel production could stimulate direct land use change (dLUC) or indirect land use change (iLUC), leading to release ofsoil carbon and other greenhouse gases. We found that about 4-10 TWh of biofuels can be produced from iLUC-free agricultural feedstockin Sweden; the range is dependent on the assumed biofuel conversion rate. The raw material studied was (1) agricultural residues, (2) ley produced on previously unused arable land, (3) crops from arable land such as intermediate crops and (4) intensification of ley cultivation.Literature indicates that iLUC-free feedstock from other sectors (forest residues, industrial byproducts and residues, and residues from other parts of society in Sweden, marine feedstock not included) could contribute 8-11 TWh biofuel. In other words, there is good potential to reach the required 20 TWh of biofuels by 2030 based on domestic iLUC-free feedstock. Lowering domesticconsumption of meat and alcoholic beverages and lowering land use for recreational horse keeping could provide additional space for biofuel production.However, steering towards iLUC-free feedstock would mean higher production costs compared to conventional biofuel production. It is therefore of particular interest to study the potential trade-offs between greenhouse gases and economics. The production of ethanol and biogas based on wheatgrain and wheat straw was studied, where wheat grain represented the current production system and wheat straw represented an iLUC-free production system.We conclude that wheat straw-based biofuels do not compete with food production and have lower greenhouse gas emissions than those based on wheat grain, but higher production costs. The reasons for higher production costs are mainly the lower biofuel yield and more expensive pretreatment.In order to enable general conclusions on trade-offs when steering towards iLUC-free feedstock, more case studies are however needed with a larger set of studied feedstocks, biofuels and including other environmental impacts.

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Björnsson, LovisaLund University,Lunds universitet,Miljö- och energisystem,Institutionen för teknik och samhälle,Institutioner vid LTH,Lunds Tekniska Högskola,Environmental and Energy Systems Studies,Department of Technology and Society,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)biot-lbj (author)
Prade, ThomasSwedish University of Agricultural Sciences, Alnarp(Swepub:lu)milj-top (author)
Lantz, MikaelLund University,Lunds universitet,Miljö- och energisystem,Institutionen för teknik och samhälle,Institutioner vid LTH,Lunds Tekniska Högskola,Environmental and Energy Systems Studies,Department of Technology and Society,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)milj-mla (author)
Swedish University of Agricultural Sciences, UppsalaMiljö- och energisystem (creator_code:org_t)

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AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Other Agricultur ...; and Renewable Bioene ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Energy Systems

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Other Environmen ...

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