Ethanol From Biomass

Dalena, Francesco; Senatore, Alessandro; Iulianelli, Adolfo; Paola, Luisa Di; Basile, Marco; Basile, Angelo

doi:10.1016/b978-0-12-811458-2.00002-x

Cited by 30 publications

(15 citation statements)

References 128 publications

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“…This makes the direct conversion of FUR to EL using ethanol as a reaction medium over an appropriate bifunctional nanocatalyst a more feasible route for EL production. Additionally, ethanol can be produced from renewable resources like biomass, which makes the route green and sustainable as well . Catalytic transfer hydrogenation of FUR and subsequent etherification/esterification in a cascaded manner are reported earlier. − Recent reports for the direct conversion of FUR to EL are tabulated in Table S1 (please refer to the Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Tathod

Saini

Arumugam

et al. 2023

ACS Appl. Nano Mater.

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An acido-basic nanocomposite is prepared through the in situ formation and growth of Mg–Al hydrotalcite nanocrystals on a ZSM-5 surface. The metal-functionalized hydrotalcite-ZSM-5 composite has been employed as a catalyst for the single-pot conversion of furfural to ethyl levulinate. The specific morphology of the composite with edge-to-face attachment of hydrotalcite nanocrystals on the ZSM-5 surface confirms the accessibility to the active sites located inside the zeolite pores. The prepared samples are thoroughly characterized using techniques like HR-SEM, HR-TEM, XRD, FTIR, N2 adsorption–desorption, TPD, TPR, UV–Vis spectroscopy, XPS, etc. for a better understanding of the catalyst properties. As high as 76% yield of ethyl levulinate was obtained through the cascaded transfer hydrogenation–alcoholysis reaction using ethanol as a H2 donor. In metal-functionalized hydrotalcite-ZSM-5 composite, metallic sites, basic sites, and acid sites are in close proximity, which act synergistically to exhibit superior catalytic performance.

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Section: Introductionmentioning

confidence: 99%

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Tathod

Saini

Arumugam

et al. 2023

ACS Appl. Nano Mater.

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“…Concerns about world energy consumption and the need to reduce the emission of greenhouse gases have accelerated scientific research on new energy sources and/or more efficient use of available feedstocks. Agroindustrial by-products of vegetal origin have great potential for renewable and sustainable energy generation due to their abundance, biodegradability, hydrocarbon content and low-cost/benefit ratio [1]. One such example is sugarcane bagasse, a by-product of sugarcane-based bioethanol industry, with an annual estimated production of 540 Mt [2].…”

Section: Introductionmentioning

confidence: 99%

“…In general, the process consists in the removal of lignin and reduction in the degree of cellulose crystallization (pre-treatment) to facilitate the enzymatic hydrolysis by cellulases and β-glucosidases, which act to convert cellulose into glucose. Subsequently, the glucose generated is fermented into ethanol by yeast [1]. Although 2G ethanol has a better energy balance than 1G ethanol and it is environmentally “friendlier”, its production is still not economically viable due to the high cost of the pre-treatment and enzymatic hydrolysis steps [8, 9].…”

Section: Introductionmentioning

confidence: 99%

Synechococcus elongatus as a model of photosynthetic bioreactor for expression of recombinant β-glucosidases

Azevedo

Lopes

Souza

et al. 2019

Biotechnol Biofuels

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Background The production of glucose from cellulose requires cellulases, which are obtained from decomposing microorganisms such as fungi and bacteria. Among the cellulases, β-glucosidases convert cellobiose to glucose and have low concentration in commercial cocktails used for the production of second-generation (2G) ethanol. Genetic engineering can be used to produce recombinant β-glucosidases, and cyanobacteria may be interesting bioreactors. These photosynthetic microorganisms can be cultured using CO 2 emitted from the first-generation ethanol (1G) industry as a carbon source. In addition, vinasse, an effluent of 1G ethanol production, can be used as a source of nitrogen for cyanobacteria growth. Thus, photosynthetic bioreactors cannot only produce cellulases at a lower cost, but also reduce the environmental impact caused by residues of 1G ethanol production. Results In the present work, we produced a strain of Synechococcus elongatus capable of expressing high levels of a heterologous β-glucosidase from a microorganism from the Amazonian soil. For this, the pET system was cloned into cyanobacteria genome. This system uses a dedicated T7 RNA polymerase for the expression of the gene of interest under the control of a nickel-inducible promoter. The results showed that the pET system functions efficiently in S. elongatus , once nickel induced T7 RNA polymerase expression which, in turn, induced expression of the gene of the microbial β-glucosidase at high levels when compared with non-induced double transgenic strain. β-glucosidase activity was more than sevenfold higher in the transformed cyanobacteria than in the wild-type strain. Conclusions The T7 system promotes high expression levels of the cloned gene in S. elongatus , demonstrating that the arrangement in which an exclusive RNA polymerase is used for transcription of heterologous genes may contribute to high-level gene expression in cyanobacteria. This work was the first to demonstrate the use of cyanobacteria for the production of recombinant β-glucosidases. This strategy could be an alternative to reduce the release of 1G ethanol by-products such as CO 2 and vinasse, not only contributing to decrease the cost of β-glucosidase production, but also mitigating the environmental impacts of ethanol industrial plants.

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“…Understanding ethanol according to (de Vasconcelos, 2015) Ethanol is commonly determined to be the chemical component ethanol or ethyl alcohol (de Vasconcelos, 2015). Whereas according to (Dalena et al, 2019)is an alcohol mainly produced from agricultural residues and it can be derived from fermentation of sucrose or simple sugars, coming from the biomass treatment (Dalena et al, 2019). In bekonang, ethanol is produced from molasses by a fermentation process.…”

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confidence: 99%

Treatment of Traditional Ethanol Fermentation Waste With Electrolysis Method for Decreasing Cod and Sulfide

Saputro

Fatimah

2021

IJTIS

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Ethanol is produced from molasses by a fermentation process. In Bekonang, ethanol manufacturingby a home-scale industry so the waste just thrown away in free water then pollution occurs both in rivers and in paddy fields. Ethanol waste has very high chemical oxygen demand (COD) and contain high sulfide. Electrolysis that use for reduce leves COD dan Sulfide with electricity as main source for direct current flowing electricity (dc) to the anode and cathode. Electrolysis time 10, 15, 20, 25 and 30 minutes and voltage variation 5, 10 and 15 volt. Based on data obtained in the test COD obtained optimum levels of 284.5 mg/L from the initial content of 586 mg/L , at a time variation of 30 minutes and voltage 15 volt. The sulfide test obtained optimum levels of 0.0661 mg/L from the initial content of 0.305 mg/L, at time variation of 25 minutes and a voltage of 15 volt.

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Ethanol From Biomass

Cited by 30 publications

References 128 publications

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Synechococcus elongatus as a model of photosynthetic bioreactor for expression of recombinant β-glucosidases

Treatment of Traditional Ethanol Fermentation Waste With Electrolysis Method for Decreasing Cod and Sulfide

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