Techno-economic comparison of process technologies for biochemical ethanol production from corn stover

Kazi, Feroz Kabir; Fortman, Joshua Alan; Anex, Robert P.; Hsu, David; Aden, Andy; Dutta, Abhijit; Kothandaraman, Geetha

doi:10.1016/j.fuel.2010.01.001

Cited by 473 publications

(364 citation statements)

References 21 publications

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“…Lignocellulosic biomass can be a potential sustainable source for biofuel production to meet future renewable fuel demands (Daoutidis et al, 2013;Demirbas, 2007). Biofuels, such as bioethanol, biobutanol, and biogasoline, can be produced from lignocellulosic biomass via three different process platforms: (1) biochemical, using enzymatic or chemical hydrolysis, followed by microbial fermentation Conde-Mejía et al, 2013;Gnansounou and Dauriat, 2010;Kazi et al, 2010;Uppugundla et al, 2014;Zhong et al, 2009); (2) thermochemical, using gasification/pyrolysis and subsequent catalytic upgrading or carbohydrate reforming Corma et al, 2011;Huber et al, 2006;Lange, 2007;Pham et al, 2014;Swanson et al, 2010;Wright et al, 2010);and (3) http://dx.doi.org/10.1016/j.biortech.2015.01.135 0960-8524/Ó 2015 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

“…Among the various competing biofuel technologies, biochemical ethanol production from lignocellulosic biomass has received the most attention in the literature (Humbird et al, 2011;Kazi et al, 2010). Several studies have focused on the synthesis and technoeconomic evaluation of biorefineries based on the aforementioned platforms (Dale and Ong, 2014;Floudas et al, 2012;Martín and Grossmann, 2011;Pham and ElHalwagi, 2012;Sammons et al, 2008;Tao et al, 2011;Wright and Brown, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The sugars are then co-fermented or fermented separately either by yeast (Kádár et al, 2007) or bacteria (Olsson and HahnHägerdal, 1996) to produce ethanol. The biomass residues (primarily lignin) are generally used for producing process heat and electricity (Holladay et al, 2007;Kazi et al, 2010). Chemical (acid) hydrolysis may offer economic advantages because of the absence of expensive enzymes (15-20% of the total ethanol production cost) (Humbird et al, 2011;Kazi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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A lignocellulosic ethanol strategy via nonenzymatic sugar production: Process synthesis and analysis

Han

Luterbacher

Alonso

et al. 2015

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A lignocellulosic ethanol strategy via nonenzymatic sugar production: Process synthesis and analysis

Han

Luterbacher

Alonso

et al. 2015

Bioresource Technology

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“…During separate hydrolysis and fermentation, the liberated cellulose is treated in a different reactor for hydrolysis and subsequent fermentation than the hydrolyzed hemicellulose and lignin. Despite the simplification of the optimization of each separate reactor and the selection of sugar-appropriate microorganisms to ferment the different sugars, the higher investment cost for two separate reactors and the inhibition of the fermenting organisms with a high glucose concentration are major disadvantages (Aden and Foust 2009;Kazi et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Bioethanol Production with Cellulase Enzyme from Bacillus cereus Isolated from Sesame Seed Residue from the Jazan Region

et al. 2018

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Bio-ethanol is considered as an important renewable fuel to partly replace fossil-derived fuels. In this study, bioethanol production, which includes cellulase production, saccharification of the cellulose content of sesame seed residue, and ethanol production, was investigated. Out of the hundreds of cellulase-producing bacterial strains isolated from sesame seed residue during this study, the B isolate was found to have the highest cellulase enzyme production. This isolate was identified as Bacillus cereus by 16S rRNA sequencing. The effects of different growth parameters, including inoculum concentration, incubation time, temperature, pH, and carbon and nitrogen sources, were investigated to optimize the growth conditions of the bacterifum. The maximum cellulase activity was achieved with an inoculum concentration of 3% after 48 h in a basal medium at a pH of 7 and an incubation temperature of 35 °C. The best nitrogen and carbon sources were yeast extract and sesame seed residue, respectively. The results showed the liberation of 2.3 g/L of reducing sugar by the dinitrosalicylic acid method. This total reducing sugar produced 15 g/L of ethanol after 48 h when Saccharomyces cerevisiae was used as a fermentation agent. Hence, bioethanol was successfully produced from the cellulose of sesame seed residue using the cellulase enzyme from B. cereus.

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“…Again, if one assumes that xylose could be converted to ethanol at similar yields, this could lead to ethanol concentrationsc lose to 81 gkg À1 .C onsidering that typicali ndustrial scenarios include target ethanol titers around 50 gkg À1 (5 wt %) to maintain reasonable separation costs,o ur potential ethanolc oncentration is consistent with that required for industrial ethanol production. [42,43] In conclusion, alkylphenols are attractive solvents to separate g-valerolactone (GVL) and water after depolymerization of biomass and recover ac oncentrated aqueous phase of carbohydrates.N onylphenol is especially well suited to producing hydrolysates that are compatible with biological upgrading and require almostn od ilution for robust microbial growth to occur.T he obtained and potential ethanol concentrations that we reported for the conversion of NP-extracted hydrolyzates (50.8 and 81 gkg À1 )a re in the range of the highest ethanol concentrations obtained using enzymatic processes. [44,45] Phenolic solvents can provide am ore effective separation, require lower pressure, andc an be used to avoid significant mechanical energy for repressurization compared to CO 2 .H owever, theses olvents must then be separated from GVL by distillation.…”

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confidence: 99%

Solvent‐Enabled Nonenyzmatic Sugar Production from Biomass for Chemical and Biological Upgrading

et al. 2015

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We recently reported an onenzymatic biomass deconstruction process for producing carbohydrates using homogeneous mixtures of g-valerolactone (GVL) and water as as olvent. Ak ey step in this process is the separation of the GVL from the aqueous phase, enabling GVL recycling and the production of ac oncentrated aqueous carbohydrate solution.I nt his study, we demonstrate that phenolic solvents-sec-butylphenol, nonylphenol, and lignin-derived propylg uaiacol-are effective at separating GVL from the aqueous phase using only small amountso fs olvent (0.5 gp er go ft he originalw ater,G VL, and sugar hydrolysate). Furthermore, using nonylphenol, we produced ah ydrolysate that supported robustg rowth and high yields of ethanol (0.49 gE tOH per gg lucose) at an industrially relevant concentration (50.8 gL À1 EtOH). These resultss uggest that using phenolic solvents could be an interesting solution for separating and/or detoxifying aqueous carbohydrate solutions produced using GVL-based biomass deconstruction processes.Lignocellulosic biomass is emerging as ap otentialr enewable feedstock to replace crude oil as as ource of fuels and commodity chemicals. For this reason,t argeted upgrading routes are being sought to convert biomass to these valuablep roducts. In this context, soluble carbohydrates are an attractive intermediate for biomass upgrading. By weight, structuralp olysaccharides typically represent between 60 and 80 wt %o f lignocellulosic biomass.I na ddition, many chemical [1][2][3][4] and biological [5][6][7][8] processes exist for upgrading carbohydrates to fuels and chemicals.Different strategies exist for deconstructing biomass hemicellulose (a polymer of C 5 sugars; mostly xylose) and cellulose (a polymer of cellobiose, ad imer of glucose) to their soluble counterparts. Concentrated mineral acids such as sulfuric or hydrochloric acid have been used to hydrolyze hemicellulose and cellulose to soluble oligomers almost quantitatively. [9][10][11][12][13] Recently,atwo-stage process consisting of at hermochemical or pretreatment stage followed by enzymatic hydrolysis has been one of the most prominently researched biomass depolymerization methods. [14][15][16][17] Both of these methods can achieve soluble carbohydrate yields upwards of 90 %a nd produce concentrated solutionso fc arbohydrates (> 100 gL À1 ). [10,13,18] Ionic liquids are also attractive solvents for cellulose dissolution and soluble carbohydrate production. [19,20] Although these processes can be used to produce sugars from biomass,t he cost of producing and/or recovering the enzyme, mineral acid, or solvent still represents as ignificant portion of the final process. [21][22][23] For this reason,a lternate systems using significantly less catalyst have also been explored, including dilute acid hydrolysis [24,25] or hydrothermalb iomass depolymerization. [13,[26][27][28] However,a tm ost temperatures (below 510-570 K) and low acid contents( >3%), the rate of sugar degradation and dehydration to furans or other degradation products is of the sam...

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Techno-economic comparison of process technologies for biochemical ethanol production from corn stover

Cited by 473 publications

References 21 publications

A lignocellulosic ethanol strategy via nonenzymatic sugar production: Process synthesis and analysis

A lignocellulosic ethanol strategy via nonenzymatic sugar production: Process synthesis and analysis

Bioethanol Production with Cellulase Enzyme from Bacillus cereus Isolated from Sesame Seed Residue from the Jazan Region

Solvent‐Enabled Nonenyzmatic Sugar Production from Biomass for Chemical and Biological Upgrading

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