Production of Bioethanol

Bajpai, Pratima

doi:10.1007/978-981-15-8779-5_5

Cited by 2 publications

(1 citation statement)

References 205 publications

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“…Due to rising fuel prices, the need to reduce reliance on fossil fuels, growing energy demand, and stricter air pollution regulations in the road transport sector, researchers worldwide, both in industry and academia, are working towards developing clean and renewable fuels. Ethanol, with a global production of 120 billion liters in 2017 [1], and in particular bioethanol, constituting 65 % of worldwide biofuel output [2], plays a crucial role as a sustainable fuel.…”

Section: Introductionmentioning

confidence: 99%

Influence of E85 on performance and efficiency of a motorcycle engine

Di Gaetano,

Volza,

Caprioli

et al. 2023

J. Phys.: Conf. Ser.

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E85 (85 vol% ethanol and 15 vol% gasoline blend) is one of the most promising sustainable fuels for SI engines, thanks to the optimum trade-off between pollutant emissions and cost of implementation, starting from a pure gasoline baseline. From the point of view of engine performance, the most relevant differences from such a baseline are related to the heat of vaporization and to the laminar flame speed. The higher heat of vaporization helps to reduce combustion temperature, thus the risk of knocking, but it also slows down the air-mixing process; the small amount of Oxygen in the fuel molecule leads to a slightly different combustion behavior. The goal of this study is to compare commercial gasoline (E5, 5 vol% ethanol and 95 vol% gasoline blend) and E85, by means of CFD 1D (GT-Power) and 3D (AVL-FIRE) simulations, using experimentally calibrated models. The reference engine is a single-cylinder, four-stroke, PFI motorcycle unit, with a displacement of 463 cc and a maximum power > 30 kW at 9500 rpm. After the calibration, carried out on the E5 version, the fuel type is changed to E85 in the 1D model, in order to provide accurate Initial Conditions (ICs) and Boundary Conditions (BNDs) to the CFD-3D analysis. Then, a series of combustion simulations are carried out at maximum power operative point (9500 rpm – WOT), varying spark advance and equivalence ratios. Results reveal that an increase of fuel flow rate and a new calibration of spark timing are needed when the engine runs on E85 to reach performances comparable to the ones obtained with E5. Simulations also show that, moving from E5 to E85, combustion efficiency can be significantly increased, with a small reduction in engine performance. An estimation of specific emissions, provided by ECFM-3Z combustion model, show that, using E85, CO and HC emissions can be significantly reduced with a small increase of NO emissions, compared to gasoline case.

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Section: Introductionmentioning

confidence: 99%

Influence of E85 on performance and efficiency of a motorcycle engine

Di Gaetano,

Volza,

Caprioli

et al. 2023

J. Phys.: Conf. Ser.

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Lignocellulosic Biomass Valorization for Bioethanol Production: a Circular Bioeconomy Approach

et al. 2022

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Lignocellulosic biomass generated from different sectors (agriculture, forestry, industrial) act as biorefinery precursor for production of second-generation (2G) bioethanol and other biochemicals. The integration of various conversion techniques on a single platform under biorefinery approach for production of biofuel and industrially important chemicals from LCB is gaining interest worldwide. The waste generated on utilization of bio-resources is almost negligible or zero in a biorefinery along with reduced greenhouse gas emissions, which supports the circular bioeconomy concept. The economic viability of a lignocellulosic biorefinery depends upon the efficient utilization of three major components of LCB—cellulose, hemicellulose and lignin. The heterogeneous structure and recalcitrant nature of LCB is main obstacle in its valorization into bioethanol and other value-added products. The success of bioconversion process depends upon methods used during pre-treatment, hydrolysis and fermentation processes. The cost involved in each step of the bioconversion process affects the viability of cellulosic ethanol. The lignocellulose biorefinery has ample scope, but much-focused research is required to fully utilize major parts of lignocellulosic biomass with zero wastage. The present review entails lignocellulosic biomass valorization for ethanol production, along with different steps involved in its production. Various value-added products produced from LCB components were also discussed. Recent technological advances and significant challenges in bioethanol production are also highlighted in addition to future perspectives. Graphical abstract

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Production of Bioethanol

Cited by 2 publications

References 205 publications

Influence of E85 on performance and efficiency of a motorcycle engine

Influence of E85 on performance and efficiency of a motorcycle engine

Lignocellulosic Biomass Valorization for Bioethanol Production: a Circular Bioeconomy Approach

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