Allocation in LCAs of biorefinery products: implications for results and decision-making

Sandin, Gustav; Røyne, Frida; Berlin, Johanna; Peters, Gregory; Svanström, Magdalena

doi:10.1016/j.jclepro.2015.01.013

Cited by 83 publications

(64 citation statements)

References 19 publications

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“…In a CLCA approach, it is relevant to expand the system by studying alternative uses of the feedstock and the case studies. 6,43 In this approach, the allocation is based on the environmental reduction potential of the replaced functions. Depending on the particular goal of the study, diff erent environmental impact categories can be used (e.g.…”

Section: Discussion and Recommendationsmentioning

confidence: 99%

“…A hybrid approach where system expansion and allocation are mixed has been proposed for use in biorefinery case studies . In this approach, the allocation is based on the environmental reduction potential of the replaced functions.…”

Section: Key Issuesmentioning

confidence: 99%

“…toxicological impacts, acidification, and primary energy consumption) as the basis for the allocation factors. The method is untested and the authors recommended it to be used in sensitivity analysis as a complementary to other more traditional ways of handling multifunctionality …”

Section: Key Issuesmentioning

confidence: 99%

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

Ahlgren

Björklund

Ekman

et al. 2015

Biofuels Bioprod Bioref

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112

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I. (2015), Review of methodological choices in LCA of biorefinery systems -key issues and recommendations. Biofuels, Bioprod. Bioref., 9: 606-619., which has been published in final form at http://onlinelibrary. ABSTRACTThe current trend in biomass conversion technologies is towards more efficient utilization of biomass feedstock in multi-product 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: (1) goal definition, (2) functional unit, (3) allocation of biorefinery outputs, (4) allocation of biomass feedstock, (5) land use, and (6) 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).

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Section: Discussion and Recommendationsmentioning

confidence: 99%

Section: Key Issuesmentioning

confidence: 99%

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

Ahlgren

Björklund

Ekman

et al. 2015

Biofuels Bioprod Bioref

Self Cite

112

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“…Sandin et al, 2015) and therefore needs to be done in a relevant way. When several coproducts (or services) are generated in a single process included in the system, or when an input to a single process in the system comes from a process (or service) that generated several coproducts, the analyst must decide how much greenhouse gas should be allocated to each flow.…”

Section: Methodological Issuesmentioning

confidence: 99%

Carbon footprints in the textile industry

Peters

Svanström

Roos

et al. 2015

Handbook of Life Cycle Assessment (LCA) of Textiles and Clothing

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“…Nonetheless, the variability of prices makes the results of economic allocation questionable. LCA reviews of allocation alternatives have highlighted the uncertainties resulting from the choice of methods (Jung et al, 2014), as well discussed situations that favor one or the other criterion (Sandin et al, 2015). However, some environmental labeling schemes, such as PAS 2050 for carbon footprints (BSI, 2011), determine a hierarchy of allocation procedures, but do not require sensitivity analysis to perform allocations with different methods.…”

Section: Modeling Issues Regarding the Choice Of Allocation Proceduresmentioning

confidence: 99%

Environmental assessment of tropical perennial crops: the case of the Brazilian cashew

Figueiredo

Potting

Serrano

et al. 2016

Journal of Cleaner Production

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Allocation in LCAs of biorefinery products: implications for results and decision-making

Cited by 83 publications

References 19 publications

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

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

Carbon footprints in the textile industry

Environmental assessment of tropical perennial crops: the case of the Brazilian cashew

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