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Review of methodological choices in LCA of biorefinery systems - key issues and recommendations

Serina Ahlgren ; Anna Björklund ; Anna Ekman ; Hanna Karlsson ; Johanna Berlin ; Pål Börjesson ; Tomas Ekvall ; Göran Finnveden ; Matty Janssen (Institutionen för energi och miljö, Miljösystemanalys) ; Ingrid Strid
Biofuels, Bioproducts and Biorefining (1932-104X). Vol. 9 (2015), 5, p. 606-619.
[Artikel, refereegranskad vetenskaplig]

The current trend in biomass conversion technologies is toward more efficient utilization of biomass feedstock in multiproduct biorefineries. Many life-cycle assessment (LCA) studies of biorefinery systems have been performed but differ in how they use the LCA methodology. Based on a review of existing LCA standards and guidelines, this paper provides recommendations on how to handle key methodological issues when performing LCA studies of biorefinery systems. Six key issues were identified: (i) goal definition, (ii) functional unit, (iii) allocation of biorefinery outputs, (iv) allocation of biomass feedstock, (v) land use, and (vi) biogenic carbon and timing of emissions. Many of the standards and guidelines reviewed here provide only general methodological recommendations. Some make more specific methodological recommendations, but these often differ between standards. In this paper we present some clarifications (e.g. examples of research questions and suitable functional units) and methodological recommendations (e.g. on allocation).

Nyckelord: biorefinery, life cycle assessment, functional unit, allocation, land use, biogenic carbon, review



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Denna post skapades 2015-05-04. Senast ändrad 2015-11-11.
CPL Pubid: 216292

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Miljösystemanalys (2005-2017)

Ämnesområden

Miljöledning
Energi
Hållbar utveckling
Energisystem
Miljöteknik
Bioenergi

Chalmers infrastruktur