Defining research &amp; development process targets through retro-techno-economic analysis: The sugarcane biorefinery case

Longati, Andreza Aparecida; Lino, Anderson R.A.; Giordano, Roberto de Campos; Furlan, Felipe F.; Cruz, Antonio José Gonçalves

doi:10.1016/j.biortech.2018.04.102

Cited by 50 publications

(32 citation statements)

References 31 publications

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“…According to Macrelli et al , bioethanol production cost can be reduced by resolving technical problems, maximizing the yield and productivity, and optimizing the process design on a larger scale. Table summarizes the MESP or break‐even selling price (BESP) of ethanol from various recent studies on the economic analysis of 1G and 2G‐ethanol production, taking into consideration the use of bagasse in biogas and electricity generation …”

Section: Cellulosic Ethanol Business Model Partnerships and Currentsupporting

confidence: 77%

“…Table presents some important examples of companies that are taking a lead in cellulosic ethanol production . A recent analysis by Lux research on a cost economic model for 2G ethanol production by six major companies (Beta Renewables, Poet + DSM, Granbio, Abengoa, Raizen, and Dow‐Dupont), using Arundo donax , corn stover, sugarcane bagasse/straw, corn stover, sugarcane bagasse and corn stover feedstocks respectively and three pretreatment technologies (dilute acid, steam explosion and alkaline), found that feedstock cost can impact nearly 40%, and potentially around 16% of the cost can be reduced by improvements in pretreatment yield, enzyme hydrolysis, and fermentation efficiency . According to Macrelli et al , bioethanol production cost can be reduced by resolving technical problems, maximizing the yield and productivity, and optimizing the process design on a larger scale.…”

Section: Cellulosic Ethanol Business Model Partnerships and Currentmentioning

confidence: 99%

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Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale

Chandel

Albarelli

Santos

et al. 2019

Biofuels Bioprod Bioref

111

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Biorefineries can upgrade waste lignocellulosic biomass (LB) into soluble (C5 and C6) sugars that can be fermented into second‐generation (2G) ethanol‐based biofuels and a range of valuable byproducts derived from lignin. Research advances made in various laboratories worldwide have not been easy to translate into large‐scale operations. Here, we performed a simple economic analysis of cellulosic ethanol production from a stand‐alone 100ton dry sugarcane bagasse per day process, from a Brazilian market perspective, based on current state‐of‐the‐art biorefinery process technologies. Economic analysis reveals that the cost of manufacturing (COM) of 2G ethanol in an annexed Brazilian facility is close to USD 1.33 L−1. Fixed and variable costs contributed 57% and 24% in COM of 2G ethanol with a high payback period of ~31 years and a negative net present value (NPV). Further cost reduction can be realized by continuous R&D efforts aiming for innovation in new processing paradigms for cellulosic biorefineries. The key market players (Poet‐DSM, DuPont, Abengoa, Beta Renewables, Raizen, Granbio, Praj, etc.) and other new emerging players (Global Yeast, Taurus Energy, Leaf, Mascoma‐Lallemand) working on ethanologen development, and cellulase producers (Novozyme, Metgen), should also develop partnerships / joint ventures to establish a sustainable business model to develop cost‐competitive 2G ethanol production from bagasse in Brazil. This paper presents additional commentary and analysis with pertinent information about the commercialization of integrated 2G ethanol biorefineries processing sugarcane bagasse, from a Brazilian perspective. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Cellulosic Ethanol Business Model Partnerships and Currentsupporting

confidence: 77%

Section: Cellulosic Ethanol Business Model Partnerships and Currentmentioning

confidence: 99%

Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale

Chandel

Albarelli

Santos

et al. 2019

Biofuels Bioprod Bioref

111

View full text Add to dashboard Cite

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“…Prolonged pretreatment might result in the formation of pseudo-lignin that could lead to an overestimation of lignin content and affect the accessibility of enzymes during enzymatic hydrolysis (Kumar et al 2013 ). A retro-techno-economic analysis of the pretreatment, hydrolysis and fermentation process would be able to ascertain the process boundaries for economic feasibility (Longati et al 2018 ) for further research and development.…”

Section: Discussionmentioning

confidence: 99%

A comparative study of the enzymatic hydrolysis of batch organosolv-pretreated birch and spruce biomass

et al. 2018

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A shift towards a sustainable and green society is vital to reduce the negative effects of climate change associated with increased CO2 emissions. Lignocellulosic biomass is both renewable and abundant, but is recalcitrant to deconstruction. Among the methods of pretreatment available, organosolv (OS) delignifies cellulose efficiently, significantly improving its digestibility by enzymes. We have assessed the hydrolysability of the cellulose-rich solid fractions from OS-pretreated spruce and birch at 2% w/v loading (dry matter). Almost complete saccharification of birch was possible with 80 mg enzyme preparation/gsolids (12 FPU/gsolids), while the saccharification yield for spruce was only 70%, even when applying 60 FPU/gsolids. As the cellulose content is enriched by OS, the yield of glucose was higher than in their steam-exploded counterparts. The hydrolysate was a transparent liquid due to the absence of phenolics and was also free from inhibitors. OS pretreatment holds potential for use in a large-scale, closed-loop biorefinery producing fuels from the cellulose fraction and platform chemicals from the hemicellulose and lignin fractions respectively.Electronic supplementary materialThe online version of this article (10.1186/s13568-018-0643-y) contains supplementary material, which is available to authorized users.

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“…In Brazil, there are two facilities aiming at producing ethanol from sugarcane bagasse and straw, highly available feedstocks that amount to about 180 million tons of dry biomass per year [2,3]. Nevertheless, this industry still faces several challenges, with economic studies showing that enzyme costs significantly affect the minimum ethanol selling price, resulting in a negative impact in the technology's competitiveness in the biofuels market [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

On-site integrated production of cellulases and β-glucosidases by Trichoderma reesei Rut C30 using steam-pretreated sugarcane bagasse

Souza

Bon

Silvab

2018

Preprint

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The high cost of commercial cellulases still hampers the economic competitiveness of the production of fuels and chemicals from lignocellulosic biomasses. This cost may be decreased by the on-site production of cellulases with the integrated use of the lignocellulosic biomass as carbon source. This integrated approach was evaluated in the present study whereby steam-pretreated sugarcane bagasse (SPSB) was used as carbon source for the production of cellulases by Trichoderma reesei Rut C30 and the produced enzymes were subsequently used for SPSB hydrolysis. An enzyme preparation with a high cellulase activity, of 1.93 FPU/mL, was obtained, and a significant β-glucosidase activity was achieved in buffered media, indicating the importance of pH control during enzyme production. The hydrolysis of SPSB with the laboratory-made mixture resulted in a glucose yield of 80%, which was equivalent to those observed for control experiments using commercial enzymes. Even though the supplementation of this mixture with external β-glucosidase from Aspergillus awamori was found to increase the initial hydrolysis rates, it had no impact on the final hydrolysis yield. It was shown that SPSB is a promising carbon source for the production of cellulases and β-glucosidases by T. reesei Rut C30 and that the enzyme preparation obtained is effective for the hydrolysis of SPSB, supporting the on-site integrated approach to decrease the cost of the enzymatic hydrolysis of lignocellulosic biomass.

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Defining research & development process targets through retro-techno-economic analysis: The sugarcane biorefinery case

Cited by 50 publications

References 31 publications

Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale

Comparative analysis of key technologies for cellulosic ethanol production from Brazilian sugarcane bagasse at a commercial scale

A comparative study of the enzymatic hydrolysis of batch organosolv-pretreated birch and spruce biomass

On-site integrated production of cellulases and β-glucosidases by Trichoderma reesei Rut C30 using steam-pretreated sugarcane bagasse

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