Lignocellulosic ethanol production from woody biomass: The impact of facility siting on competitiveness

Stephen, J.D.; Mabee, Warren; Saddler, Jack N.

doi:10.1016/j.enpol.2013.03.043

Cited by 24 publications

(10 citation statements)

References 55 publications

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“…Stephen et al (2012) concluded that it is likely that additional subsidies or policy support is needed to make second generation ethanol production from softwood competitive with corn ethanol in 2020. A study have also been conducted by Stephen et al (2013) to investigate the feasibility of different lignocellulosic materials, including softwood (Douglas Fir), and the impact of facility sitting in Canada. Since softwood consists of a larger amount of lignin and a less amount of hemicelluloses, compared to hardwood and agricultural residues, it demands a harsher pretreatment to separate the hemicellulose from the lignin and cellulose.…”

Section: Introductionmentioning

confidence: 99%

Integration potential, resource efficiency and cost of forest-fuel-based biorefineries

Joelsson¹,

Wallberg²,

Börjesson³

2015

Computers & Chemical Engineering

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Section: Introductionmentioning

confidence: 99%

Integration potential, resource efficiency and cost of forest-fuel-based biorefineries

Joelsson¹,

Wallberg²,

Börjesson³

2015

Computers & Chemical Engineering

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“…A variety of raw materials, which require different process configurations, have been examined, including bagasse and sugar cane [21,22], switch grass [23,24], wood [25][26][27], and corn and corn stover [28][29][30]. However, to the best of the authors' knowledge, there are few reports on the technical and economic aspects of wheat straw biorefineries.…”

Section: Introductionmentioning

confidence: 99%

Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Joelsson

Dienes

Kovács

et al. 2016

Sustain Chem Process

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Background: Production of ethanol and biogas from acetic acid-impregnated steam-pretreated wheat straw was investigated. The solid fraction after pretreatment was used at high solids concentrations to generate ethanol by simultaneous saccharification and fermentation (SSF). The residual streams were evaluated with regard to biogas production. The experimental results were used to perform a techno-economic evaluation of a biorefinery concerning ethanol, raw biogas, pellet, and electricity production at various solid contents and residence times in the fermentation step. The configurations were also altered to include biogas upgrading to vehicle fuel quality or fermentation of xylose to ethanol. Results:At a water-insoluble solids (WIS) content in the SSF of between 10 and 20 %, the ethanol yields exceeded 80 %, the highest being 86 % at 12.5 % WIS, expressed as % of the theoretical maximum, based on the glucan content in SSF. Anaerobic digestion of wheat straw hydrolysate and stillage yielded 4.8 and 1.0-1.2 g methane/100 g dry straw, respectively, in 7-day experiments. Maximum recovery of overall product was achieved when SSF was run at between 10 and 15 % initial WIS content, for which the product yields from 100 g dry wheat straw were 16.1-16.3 g ethanol, 5.8-6.0 g methane, and 25 g lignin-rich solid residue. The net present value (NPV) was negative at discount rate of 11 % but positive at 5 % discount rate for all configurations. The 20 % WIS configuration with a residence time of 96 h in the fermentation stage attained the highest NPV. The minimum ethanol selling price varied between 0.72 and 0.87 EUR/L ethanol when the biogas was unchanged and it decreased to between 0.46 and 0.60 EUR/L ethanol when the biogas was upgraded to vehicle fuel quality or when xylose was converted to ethanol. Conclusions:According to the techno-economic assessment, a process that is based on the fermentation of only hexoses to ethanol, and production of raw biogas from xylose is not profitable under the economic assumptions including 11 % discount rate in the evaluation. However, the profitability of a plant can be improved by biogas upgrading to vehicle fuel quality or fermentation of xylose to ethanol.

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“…3). Low BGL activity in the commercial cellulase (0.49 U/mg of filter paper activity and 191 mg/mL protein content) might be the reason for the lower SY [26,27].…”

Section: Saccharification Of Canola Biomassmentioning

confidence: 99%

Phytoremediation of metal-contaminated soils by the hyperaccumulator canola (Brassica napus L.) and the use of its biomass for ethanol production

Dhiman

Selvaraj

et al. 2016

Fuel

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Lignocellulosic ethanol production from woody biomass: The impact of facility siting on competitiveness

Cited by 24 publications

References 55 publications

Integration potential, resource efficiency and cost of forest-fuel-based biorefineries

Integration potential, resource efficiency and cost of forest-fuel-based biorefineries

Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Phytoremediation of metal-contaminated soils by the hyperaccumulator canola (Brassica napus L.) and the use of its biomass for ethanol production

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