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A. Dauriat
École Polytechnique Fédérale de Lausanne
Life-cycle assessmentBiomassGreenhouse gasBiofuelWaste management
16Publications
11H-index
1,246Citations
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Publications 16
Newest
#1Edgard Gnansounou (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 28
#2A. DauriatH-Index: 11
Publisher Summary The concerns about energy balances are related to both the life-cycle energy efficiency of biofuels and the saving of nonrenewable energy between biofuels and fossil fuels. The chapter considers wheat-based bioethanol production in Switzerland as a case study, with the aim of quantifying the variation in GHG (greenhouse gas) emissions and nonrenewable energy use depending on methodological choices. The results presented in this chapter show a large variation of the net GHG emis...
13 CitationsSource
#1Edgard Gnansounou (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 28
#2A. DauriatH-Index: 11
Publisher Summary The first detailed technical reports on technoeconomic evaluation of lignocellulosic ethanol found in the literature concerning the U.S. cases date back to the mid-1980s. Especially in 1987, the U.S. National Renewable Energy Laboratory (NREL) received several technical reports delivered by subcontractors. The review undertaken in this chapter raises the issue and finding that the contribution of biomass cost to the overall production cost of lignocellulosic bioethanol proves t...
10 CitationsSource
#1Edgard Gnansounou (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 28
#2A. Dauriat (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 11
Lignocellulosic ethanol is expected to be commercialised during the next decade as renewable energy for transport. Competiveness with first generation bioethanol and with gasoline is commonly considered in techno-economic analyses for commercial stage. Several existing reviews conclude about the high spread of current and projected production costs of lignocellulosic ethanol due to the significant differences in assumptions concerning the following factors: composition and cost of feedstock, pro...
306 CitationsSource
#1Edgard Gnansounou (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 28
#2A. DauriatH-Index: 11
Last. Luis Panichelli (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 9
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The promotion of biofuels as energy for transportation in the industrialized countries is mainly driven by the perspective of oil depletion, the concerns about energy security and global warming. However due to sustainability constraints, biofuels will replace only 10 to 15% of fossil liquid fuels in the transport sector. Several governments have defined a minimum target of GHG emissions reduction for those biofuels that will be eligible to public incentives, for example a 35% emissions reductio...
288 CitationsSource
#1Luis Panichelli (École nationale de l'aviation civile)H-Index: 9
#2A. DauriatH-Index: 11
Last. Edgard Gnansounou (École nationale de l'aviation civile)H-Index: 28
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Background, aim and scope Regional specificities are a key factor when analyzing the environmental impact of a biofuel pathway through a life cycle assessment (LCA). Due to different energy mixes, transport distances, agricultural practices and land use changes, results can significantly vary from one country to another. The Republic of Argentina is the first exporter of soybean oil and meal and the third largest soybean producer in the world, and therefore, soybean-based biodiesel production is...
119 CitationsSource
Estimating greenhouse gas (GHG) balances of biofuels is subject to significant biases stemming from modelling choices about system definition and boundaries, functional unit, reference systems and allocation methods. This paper investigates extent to which these choices influence the results. After performing a comparison and constructive criticism of various modelling choices, life cycle assessment (LCA) of wheat-to-bioethanol was used as an illustrative case where bioethanol was blended with g...
25 Citations
#1Edgard GnansounouH-Index: 28
#2A. DauriatH-Index: 11
Last. Juan David VillegasH-Index: 5
view all 4 authors...
The interest in developing biofuels has rapidly increased during the last decades followed by a strong controversy about their sustainability. Diverting a large amount of land from agriculture to fuels, impacting forests and grasslands, loss of biodiversity due to large monocropped fields are some threats that inhibit the momentum towards a significant substitution of fossil fuels by biofuels. From a methodological point of view, several estimations of the reduction of greenhouse gas (GHG) emiss...
3 Citations
#1Edgard Gnansounou (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 28
#2Luis PanichelliH-Index: 9
Last. Juan David VillegasH-Index: 5
view all 4 authors...
Increased demand for biofuels is expected to produce changes in the present land-use configuration. Furthermore there is a growing concern about the effect of land-use change on biodiversity, food supply, soil and water quality. Biofuels production on current land and use of biomass in a given region can induce displacement of activities and land-use changes elsewhere. This effect is known as indirect land-use change (ILUC). Due to changes in the carbon stock of the soil and the biomass, indirec...
18 Citations
#1Edgard GnansounouH-Index: 28
#2Luis PanichelliH-Index: 9
Last. Juan David VillegasH-Index: 5
view all 4 authors...
Increased demand for biofuels is expected to produce changes in the present land-use configuration. Furthermore there is a growing concern about the effect of land-use change on biodiversity, food supply, soil and water quality. Biofuels production on current land and use of biomass in a given region can induce displacement of activities and land-use changes elsewhere. This effect is known as indirect land-use change (ILUC). Due to changes in the carbon stock of the soil and the biomass, indirec...
32 Citations
This paper presents a general review of biomass-to-ethanol, analysis of conversion pathways from technical, economic and environmental points of view, and estimation of production cost in the Indian context. Due to learning curve and other economic reasons, Brazil and the United States are found to be more competitive worldwide and will maintain their comparative advantage in the next decade. However, the fast growth of the world demand of bio-ethanol fuel as well as the perspectives of the oil ...
67 Citations
12