Biobutanol production from sugarcane straw: Defining optimal biomass loading for improved ABE fermentation

Pratto, Bruna; Chandgude, Vijaya; Sousa, Ruy; Cruz, Antonio José Gonçalves; Bankar, Sandip B.

doi:10.1016/j.indcrop.2020.112265

Cited by 74 publications

(16 citation statements)

References 48 publications

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“…The butanol and ABE yields (Table 4) also showed higher values for the runs with the lower initial monosaccharides concentration (between 0.21-0.25 g/g for butanol, between 0.32-0.38 g/g for ABE) and lower values for the runs with the higher initial monosaccharides concentration (0.17-0.19 g/g butanol, 0.27-0.28 g/g ABE). These results are F I G U R E 2 (A) Initial and final monosaccharides from acetone-butanol-ethanol (ABE) fermentation at 96 h and (B) solvents production from ABE fermentation at 96 h. Nondetox: non detoxified; Detox: detoxified similar to those obtained by Pratto et al, [14] working with C. acetobutylicum NRRL B-527, who obtained maximum ABE yields of 0.35 g/g, slightly higher than those obtained by Paniagua-García et al, [35] who obtained butanol and ABE yields of 0.18 ± 0.03 and 0.22 ± 0.04, respectively, working with C. beijerinckii CECT 508. The productivity (Table 4) showed a different behaviour, with higher values for the higher initial monosaccharides concentration (run 1, 0.11 g butanol/L Á h and 0.16 g ABE/L Á h) and lower values for the rest of the runs (values between 0.07-0.11 g butanol/L Á h and 0.12-0.15 g ABE/L Á h).…”

Section: Abe Fermentation Of the Enzymatic Hydrolysatessupporting

confidence: 79%

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Exploring the use of high solid loadings in enzymatic hydrolysis to improve biobutanol production from brewers' spent grains

et al. 2021

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Brewers' spent grain (BSG) is a promising agroindustrial waste for the production of biobutanol. One critical point in the butanol production process is the optimization of the enzymatic hydrolysis step. In order to obtain the maximum efficiency, it is necessary to use high solids loadings in this process to obtain high concentrations of monosaccharides that allow high titres of butanol to be produced in the ABE fermentation process. The optimum enzyme and solids load maximizing the

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Section: Abe Fermentation Of the Enzymatic Hydrolysatessupporting

confidence: 79%

“…In the ABE fermentation process, the enzymatic hydrolysis is usually carried out at solids load between 10%-15% w/w. [12,14] Increasing the solids load in the enzymatic hydrolysis is an effective way of increasing the concentration of monosaccharides, and thus of increasing the final concentrations of solvents.…”

Section: Introductionmentioning

confidence: 99%

Exploring the use of high solid loadings in enzymatic hydrolysis to improve biobutanol production from brewers' spent grains

et al. 2021

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“…Various fermentation agents can be used to produce second‐generation ethanol, with the most common being Saccharomyces cerevisiae (baker's yeast), as it produces a good yield of ethanol and promotes rapid conversion [32] . In addition, n ‐butanol can be obtained by an acetone‐butanol‐ethanol fermentation method that uses clostridium acetobutylicum as the fermentation agent [33] …”

Section: Sugarcanementioning

confidence: 99%

“…[32] In addition, n-butanol can be obtained by an acetone-butanol-ethanol fermentation method that uses clostridium acetobutylicum as the fermentation agent. [33]…”

Section: Second-generation Ethanolmentioning

confidence: 99%

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

et al. 2020

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This Review highlights the principal crops of Brazil and how their harvest waste can be used in the chemicals and materials industries. The Review covers various plants; with grains, fruits, trees and nuts all being discussed. Native and adopted plants are included and studies on using these plants as a source of chemicals and materials for industrial applications, polymer synthesis, medicinal use and in chemical research are discussed. The main aim of the Review is to highlight the principal Brazilian agricultural resources; such as sugarcane, oranges and soybean, as well as secondary resources, such as andiroba brazil nut, buriti and others, which should be explored further for scientific and technological applications. Furthermore, vegetable oils, carbohydrates (starch, cellulose, hemicellulose, lignocellulose and pectin), flavones and essential oils are described as well as their potential applications.

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“…Butyric acid was reported to be high in acidogenic fermentation with higher pH of 6.5, probably due to chain elongation of shorter chain acids (acetic acid) [13] or with bioaugmentation of Clostridium species [14]. The acidogenic phase of acetone-ethanol-butanol (ABE) fermentation also produces acetic acid and butyric acid as intermediate steps prior to re-assimilating those acids to produce ABE in the solventogenic phase [15].…”

Section: Introductionmentioning

confidence: 99%

Improved Spectrophotometric Method for Determination of High-Range Volatile Fatty Acids in Mixed Acid Fermentation of Organic Residues

et al. 2022

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Volatile fatty acids (VFAs) are the important intermediates indicating the stability and performance of fermentation process. This study developed the spectrophotometric method for determining high-range VFA concentration in mixed-acid fermentation samples. The performance was compared with the gas chromatography (GC) technique. The calibration curves of the modified method showed linearity over a wide and high concentration range of 250–5000 mg/L for individual C2–C6 VFAs in both linear and branched chains. In order to evaluate the modified method for VFA determination in complex fermentation matrices, fermentation samples produced from acidogenic fermentation of plant materials were spiked with acetic (500–1500 mg/L) and butyric acids (1000 mg/L). The accuracy and precision of the modified method for VFA determination were in the range of 94.68–106.50% and 2.35–9.26%, respectively, comparable to the GC method (94.42–99.13% and 0.17–1.93%). The developed method was applicable to measuring all C2–C6 compounds and VFA concentrations in the fermentation samples and had an acceptable accuracy and precision. The proposed method is analytically reliable and offers significant advantages in the rapid determination of VFAs in mixed acid fermentation of organic residues.

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Biobutanol production from sugarcane straw: Defining optimal biomass loading for improved ABE fermentation

Cited by 74 publications

References 48 publications

Exploring the use of high solid loadings in enzymatic hydrolysis to improve biobutanol production from brewers' spent grains

Exploring the use of high solid loadings in enzymatic hydrolysis to improve biobutanol production from brewers' spent grains

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

Improved Spectrophotometric Method for Determination of High-Range Volatile Fatty Acids in Mixed Acid Fermentation of Organic Residues

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