De Meester, Steven

Dewulf, Jo

Huysveld, Sophie

Lauwers, Ludwig

Van linden, Veerle

English

Ghent University Academic Bibliography

Sophie Huysveld1,2, Veerle Van linden1, Steven De Meester2,                        Ludwig Lauwers1 and Jo Dewulf2  www.ilvo.vlaanderen.be                                                                                 www.envoc.ugent.be  Financed by Agency for Innovation by Science and Technology in Flanders  1Institute for Agricultural and Fisheries Research (ILVO) in Flanders, Belgium 2Research Group EnVOC, Environmental Organic Chemistry and Technology,        Ghent University, Belgium  sophie.huysveld@ilvo.vlaanderen.be Introduction Materials & Methods REFERENCES DEWULF, J., BÖSCH, M. E., MEESTER, B. D., VORST, G. V. D., LANGENHOVE, H. V., HELLWEG, S. & HUIJBREGTS, M. A. J. (2007) Cumulative Exergy Extraction from the Natural Environment (CEENE): a comprehensive Life Cycle Impact Assessment method for resource accounting. Environmental Science & Technology, 41, 8477-8483 GOEDKOOP, M., HEIJUNGS, R., HUIJBREGTS, M.A.J., DE SCHRYVER, A., STRUIJS, J. and VAN ZELM, R., 2013. ReCiPe 2008:  A life cycle impact assessment method which comprises harmonised category indicators at the midpoint and the endpoint level. First edition (revised). Report I: Characterisation.  SZARGUT, J., MORRIS, D.R., and STEWARD, F.R. (1988) Exergy analysis of thermal, chemical and metallurgical processes. Hemisphere Publishing Corporation, Berlin.   Results Conclusion & Perspectives Exergy reflects both the quality and the quantity of resources, while energy only includes their quantity. Exergy of a resource = “maximum amount of useful work that can be retrieved from this resource when bringing it into equilibrium with the natural environment through reversible processes” (Szargut et al., 1988) • The results show that main impacts, both in terms of resource consumption and emissions, can be ascribed to the total feed supply. From the preliminary economic analysis, a similar dominance of feed was seen in the cost structure of milk production.  • In further research we will concretise which, and how, ecological and economic information should be linked in an ecological-economic trade-off analysis to  enhance sustainable development of dairy systems.  • system logic: quantification of inputs and outputs • one common scale for all types of material and energy flows: joules of exergy • exergetic efficiencies can be calculated at process level Exergyin ResourcesExergy lossProducts and by-productsHeatWastesExergeticefficiencyExergyoutObjectives A life cycle resource footprint can be calculated by conducting an Exergetic Life Cycle Assessment (ELCA).  Impact assessment methods used in our study:  • resource use: Cumulative Exergy Extraction from the Natural Environment (CEENE) (Dewulf et al., 2007) • emissions: ReCiPe v1.08 (Goedkoop et al., 2013) Advantages of Exergy Analysis (EA): Opportunities of using Exergetic Life Cycle Assessment (ELCA) towards ecological-economic analysis Our study aims to  (i) critically analyse the combined application of a resource-based ELCA and an emissions-based LCA in a case study of a specialised Flemish dairy farm (ii) explore the possibilities of linking ELCA (and LCA) with an economic analysis to enhance sustainable development of dairy farms Livestock farming • increasingly been studied using Life Cycle Assessment (LCA) with a main focus on emissions-related impacts  • many systems have become high input/ high output systems →  resource-based analysis very relevant → resource consumption assessment by Exergy Analysis (see M&M) Similar system logic between  • Exergy Analysis (exergy values)  • economic analysis (monetary values)  → enables an integrated ecological-economic assessment * * includes electricity, fuel use for feeding,  infrastructure, etc. 

Opportunities of using Exergetic Life Cycle Assessment (ELCA) towards ecological-economic analysis

https://biblio.ugent.be/publication/5957150/file/5957153

Opportunities of using Exergetic Life Cycle Assessment (ELCA) towards ecological-economic analysis

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