Ethanol dehydration by absorption and biodiesel production by reactive distillation: An innovative integrated process

Silva, Ronaldy J.M.C.L.; Souza, Thibério Pinho Costa; Elihimas, Diego R.M.; Silva, Josivan P.; Albuquerque, Allan Almeida; Pacheco, José Geraldo A.; Silva, José M. F.

doi:10.1016/j.biombioe.2021.106263

Cited by 2 publications

(2 citation statements)

References 48 publications

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“…One alternative is the use of renewable energy, such as solar, wind and biofuels. In Brazil, first-generation liquid biofuels for vehicular transport come from food crops, such as ethanol from sugarcane [2] and biodiesel from vegetable oils [3]. This market, however, competes with the use of land and water for food production.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Liborio,

Gonzalez,

Arias

et al. 2023

Energies

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Energy cane is a genotype derived from species of sugarcane (Saccharum officinarum and Saccharum spontaneum) with a lower sucrose content and higher fiber content for bioenergy purposes. It is a rustic plant that demands less fertile soils that do not compete with food crops. In this work, an analysis of energy cane bagasse pyrolysis products was performed, assessing the effect of reaction temperature and kinetic and thermodynamic parameters. Anhydrosugars, such as D-allose, were the primary compounds derived from the decomposition of energy cane at 500 °C. Methyl vinyl ketone and acetic acid were favored at 550 and 600 °C. At 650 °C, methyl glyoxal, acetaldehyde and hydrocarbons were favored. Among the hydrocarbons observed, butane, toluene and olefins such as 1-decene, 1-undecene, 1-tridecene and 1-tetradecene were the most produced. The Friedman isoconversional method was able to determine the average activation energies in the ranges 113.7−149.4, 119.9−168.0, 149.3−196.4 and 170.1−2913.9 kJ mol−1 for the decomposition of, respectively, pseudo-extractives, pseudo-hemicellulose, pseudo-cellulose and pseudo-lignin. The thermodynamic parameters of activation were determined within the ranges of 131.0 to 507.6 kJ mol−1 for ΔH, 153.7 to 215.2 kJ mol−1 for ΔG and −35.5 to 508.8 J mol−1 K−1 for ΔS. This study is very encouraging for the cultivation and use of high-fiber-content energy cane bagasse, after sucrose extraction, to produce biofuels as an alternative to the current method of conversion into electricity by low-efficiency burning.

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Section: Introductionmentioning

confidence: 99%

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Liborio,

Gonzalez,

Arias

et al. 2023

Energies

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“…The production of renewable biofuels from vegetable oils and biomass residues has been shown to be an attractive alternative [1]. In the first generation of biofuels, some technologies involve the use of glucose in the production of bioethanol [2] and the use of vegetable oils and animal fats in the production of biodiesel by transesterification [3][4][5][6] or esterification [7,8]. The physical and chemical properties of these biofuels, however, limit their application as a drop-in fuel [9].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-Free Deoxygenation of Oleic Acid and Industrial Vegetable Oil Waste on CuNiAl Catalysts for Biofuel Production

Sabino,

Liborio,

Arias

et al. 2023

Energies

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The pyrolysis of vegetable oil waste is an alternative way to convert biomass into high-quality second-generation biofuels, with social, economic and environmental sustainability. The present work deals with the pyrolysis of oleic acid as a model compound and an industrial vegetable oil residue on CuNiAl mixed oxide catalysts, derived from layered double hydroxides. Reactions of the oils pre-adsorbed on the catalysts (catalyst:oil mass ratio of 5:1) were performed at 550 °C on a micro-pyrolysis system and the analyses of volatile products were carried out online using GC/MS. Copper addition to NiAl catalysts increased the cracking of oleic acid. Increasing copper content also decreased the formation of aromatics and coke precursors, as well as oxygenated compounds. The CuNiAl catalyst with a Cu/Ni ratio of 0.4 showed strong catalytic activity in the conversion of an industrial vegetable oil residue with a high volume of free fatty acids produced. Compared to the non-catalytic reaction, the catalyst reduced the content of oxygenates and increased the content of hydrocarbons, particularly in the gasoline range (C5–C9). The CuNiAl oxide catalyst was able to convert vegetable oil residues into hydrocarbons in the range of gasoline, kerosene and diesel, and also linear alkylbenzenes as chemical precursors for surfactant production.

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Ethanol dehydration by absorption and biodiesel production by reactive distillation: An innovative integrated process

Cited by 2 publications

References 48 publications

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Hydrogen-Free Deoxygenation of Oleic Acid and Industrial Vegetable Oil Waste on CuNiAl Catalysts for Biofuel Production

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