Bioethanol production from forestry residues: A comparative techno-economic analysis

Frankó, Balázs; Galbe, Mats; Wallberg, Ola

doi:10.1016/j.apenergy.2016.11.011

Cited by 72 publications

(49 citation statements)

References 32 publications

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“…39 To account for the increase in electricity demand for solids handling when switching from corn stover to forest residue, the original data have been recalculated to values specific to dry feedstock flow. 38 The demand for chemicals has been increased in relation to the data reported by Tao et al 37 for the pretreatment step by a factor of 2 based on Nanada et al 40 in order to account for the need of harsher pretreatment conditions to achieve comparable yields in downstream hydrolysis when using forest residues as feedstock. For the remaining liquid processing parts of the plant, the dry feedstock-specific electricity demand has been assumed unchanged.…”

Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

“…37 However, this process has been adjusted to account for forest residues as feedstock using published data for both corn stover and forest ethanol. 38,39 The specific electricity demand for the ABE process is based on underlying data for the corn stover ABE fermentation. 39 To account for the increase in electricity demand for solids handling when switching from corn stover to forest residue, the original data have been recalculated to values specific to dry feedstock flow.…”

Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

“…The heat demand is based on data from 37 for the upgrade process of the liquid products and complemented with data for wood-based ethanol production relevant to the current process. 38 The demand for chemicals has been increased in relation to the data reported by Tao et al 37 for the pretreatment step by a factor of 2 based on Nanada et al 40 in order to account for the need of harsher pretreatment conditions to achieve comparable yields in downstream hydrolysis when using forest residues as feedstock. Based on data from Nanda et al 40 the ABE yields from forest residue-based hydrolysates are similar to those from wheat straw hydrolysate, a comparable feedstock to corn stover.…”

Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

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Lifecycle energy and greenhouse gas emissions analysis of biomass‐based 2‐ethylhexanol as an alternative transportation fuel

Poulikidou

Heyne

Grahn

et al. 2019

Energy Science & Engineering

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This study investigates the environmental performance of 2‐ethylhexanol (2‐EH), as a potential drop‐in transport fuel alternative. Three different biomass‐based production pathways are evaluated and compared using life cycle assessment (LCA) methodology. The environmental impact of 2‐EH is assessed in terms of cumulative energy demand (CED) and global warming potential (GWP). Among the three alternative pathways, 2‐EH produced via syngas results in the lowest primary energy demand and GHG emissions under the baseline assumptions of this work. The two biochemical production pathways (via ethanol and butanol) exhibit higher CED and GWP during biomass conversion steps mainly due to process materials and chemicals used. Process specifications such as transport distance to production facility or the fate of the obtained by‐products are shown to influence the overall environmental impact of the fuel for all studied pathways. The use phase performance of 2‐EH was also considered in this work, as part of a 100% renewable blend and was compared to existing fossil and renewable fuels. The studied blend has the potential to reduce GHG emissions by more than 85% compared to fossil diesel while when certain production pathways are followed, it exhibits lower GWP than renewable fuels already in the market such as ethanol blends and biodiesel. 2‐EH can therefore provide a competitive alternative to fossil transport fuels increasing the share of renewable content in the current vehicle fleet, thus enhancing the efforts for a sustainable transport sector.

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Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

Section: Pathway C: Through Abe Fermentation and Butanolmentioning

confidence: 99%

See 1 more Smart Citation

Lifecycle energy and greenhouse gas emissions analysis of biomass‐based 2‐ethylhexanol as an alternative transportation fuel

Poulikidou

Heyne

Grahn

et al. 2019

Energy Science & Engineering

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show abstract

“…Average market selling price (€/t) Glucose 355.0 26,41 Lignin 530.6 [42][43][44][45][46] Hemicellulose 105.4 [47][48][49] Bioethanol 830.5 [50][51][52][53][54] Furfural 865.3 [55][56][57][58][59][60] Acetic acid 834.2 [61][62][63][64] Modeling and Analysis: Lignocellulosic biorefinery life-cycle assessment S Bello et al…”

Section: Productmentioning

confidence: 99%

Comparative evaluation of lignocellulosic biorefinery scenarios under a life‐cycle assessment approach

Bello

Ríos

Feijoo

et al. 2018

Biofuels Bioprod Bioref

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The exploitation of lignocellulosic materials with the aim of producing high value‐added products will potentially counteract concerns such as depletion of fossil resources or exponential population growth. The present study focuses on the assessment of an integrated process based on organosolv fractionation of residual beech woodchips, with the objective of implementing concepts such as circular economy or process integration. The life‐cycle assessment (LCA) methodology and the eco‐efficiency concept allow for a holistic analysis of sustainability in terms of the system's environmental approach. The results show that the pre‐treatment of biomass together with the energy demands of the process and enzyme production constitute the hotspots of the system. Analyzing the system by means of the ecoefficiency indicator demonstrates that broadening the multi‐production spectrum of a biorefinery provides better results when production volume and processing steps fit environmental and techno‐economical requirements. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…The conversion of lignocellulosic biomass into bioethanol includes two sequential steps: hydrolysis (saccharification) of raw materials into monosaccharides, and the additional fermentation from soluble sugars to ethanol (Zhang et al 2007;Domínguez et al 2017). Therefore, to produce bioenergy and chemicals from lignocelluloses, carbohydrate polymers must be first broken down into individual sugar molecules (Sarkar et al 2012;Frankó et al 2016). However, a severe restriction of enzymatic accessibility is caused by the complexity of the cell wall matrix, the structural heterogeneity, and the complex cross-linking of the cell-wall constituents Deng et al 2015Deng et al , 2016Li et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Dilute Acid, Alkali, and Biological Pretreatments for Reducing Sugar Production from Eucalyptus

Zhang

et al. 2017

BioResources

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The effects of chemical pretreatments (dilute H2SO4, dilute NaOH, and NH4OH) and biological pretreatments (Coriolus versicolor and Daedalea quercina) on the enzymatic hydrolysis of Eucalyptus were investigated. The results showed that Eucalyptus obtained from different regions possess similar chemical compositions and that the optimum particle sizes for reducing sugar production were 60-to 80-mesh. Contrary to the negative influences of a dilute H2SO4 pretreatment, an alkali pretreatment showed positive effects on Eucalyptus saccharification. This phenomenon may had been attributed to the efficient removal of lignin and the stronger structural damage during the alkali pretreatment process. In comparison with the chemical pretreatments, a higher reducing sugar yield could be achieved from the biological pretreated Eucalyptus. The highest reducing sugar yield of 97.14 mg/g was obtained from the Guangxi (GX) Eucalyptus that was pretreated with Daedalea quercina.

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Bioethanol production from forestry residues: A comparative techno-economic analysis

Cited by 72 publications

References 32 publications

Lifecycle energy and greenhouse gas emissions analysis of biomass‐based 2‐ethylhexanol as an alternative transportation fuel

Lifecycle energy and greenhouse gas emissions analysis of biomass‐based 2‐ethylhexanol as an alternative transportation fuel

Comparative evaluation of lignocellulosic biorefinery scenarios under a life‐cycle assessment approach

Comparison of Dilute Acid, Alkali, and Biological Pretreatments for Reducing Sugar Production from Eucalyptus

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