Economic evaluation of synthetic ethanol production by using domestic biowastes and coal mixture

Gwak, You Ra; Kim, Ye Bin; Gwak, In Seop; Lee, See Hoon

doi:10.1016/j.fuel.2017.10.101

Cited by 24 publications

(5 citation statements)

References 22 publications

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“…The stochastic efficiency with respect to a function (SERF) method explained the heterogeneity in the decision making of the replacement production systems based on the five types of farmers' attitudes towards risks [15]. The net present value (NPV), internal rate of return (IRR) and payback period are commonly used in economic analysis [16,17]. NPV was used to determine the overall profitability of multiple alternatives in financial analysis [18], which was a long-term financial tool that could help individuals or companies decide whether to invest.…”

Section: Introductionmentioning

confidence: 99%

Economic Evaluation and Risk Premium Estimation of Rainfed Soybean under Various Planting Practices in a Semi-Humid Drought-Prone Region of Northwest China

Liao,

Pei,

Bai

et al. 2023

Agronomy

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Economic benefits and risk premiums significantly affect the production system decision making of farmers and government departments. This study evaluated the economic feasibility and estimated the risk premium of 12 rainfed soybean production systems with various planting densities, fertilization rates and planting patterns by considering the impact of soybean price fluctuation. There were two planting densities (D1: 160,000 plants ha−1 and D2: 320,000 plants ha−1), two fertilization rates (F1: 20 kg ha−1 N, 30 kg ha−1 P, 30 kg ha−1 K; F2: 40 kg ha−1 N, 60 kg ha−1 P, 60 kg ha−1 K) and three planting patterns (F+W0: flat cultivation with no irrigation; R+W0: plastic-mulched ridge-furrow cultivation (PMRF) with no irrigation; R+W1: PMRF with supplemental irrigation of 30 mm at the pod-filling stage). Based on the two-year (2019–2020) field data in a semi-humid drought-prone region of northwest China and soybean price fluctuation from January 2014 to June 2021, the net income (NI) was calculated by considering the impact of soybean price fluctuation and assuming constant soybean production costs. The net present value (NPV) method and the stochastic efficiency with respect to a function (SERF) method were used to evaluate the profitability of protective alternatives and the risk of these alternatives. The results showed that the 12 proposed soybean production systems were economically feasible. Reducing the fertilization rate reduced the input costs, but it did not necessarily result in a decrease in soybean yield and NI. The payback period of all production systems was within two years for farmers investing through loans. High-fertilizer and high-density production systems made personal investment obtain the highest economic benefit in this study, which was not the best investment strategy from the perspective of production-to-investment ratio and environmental protection departments. The preferences of farmers with various risk aversion and environmental protection departments in terms of risk premium were also proposed. The economic and risk assessment framework of this study can enhance the understanding of the adjustment of production systems from different perspectives, and provide strategies for promoting the protection of economic, environmental and socially sustainable agricultural systems.

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Section: Introductionmentioning

confidence: 99%

Economic Evaluation and Risk Premium Estimation of Rainfed Soybean under Various Planting Practices in a Semi-Humid Drought-Prone Region of Northwest China

Liao,

Pei,

Bai

et al. 2023

Agronomy

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“…The increasing world population coupled with economic growth has led to a parallel increase in energy consumption , and associated increases in CO 2 emissions. Therefore, the role of renewable energy , including that from biomass sources cannot be overemphaszied in combating climate change .…”

Section: Introductionmentioning

confidence: 99%

Fast Pyrolysis Downer Reactor: Effect of Reactor Geometry on the Hydrodynamics

Soanuch

Korkerd

Pareek

et al. 2022

Ind. Eng. Chem. Res.

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Downer reactors are the reactors of choice for fast chemical reactions, such as those associated with cracking of heavier feedstock in petroleum refineries. The objective of this study was to investigate the hydrodynamics of the downer reactor for biomass fast pyrolysis with specific emphasis on understanding the effect of the reactor geometry on the system hydrodynamics. Three-dimensional transient Eulerian–Eulerian simulations using the kinetic theory of granular flow were used to evaluate the effect of reactor tapering and cone position on the resulting hydrodynamics. It was found that optimal positioning of the cone could improve the mixing, while the suitable tapered downers could improve radial solid distribution while still resulting in a mean gas residence time within a range suitable for biomass fast pyrolysis.

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“…La demanda mundial de energía ha aumentado debido al desarrollo industrial y de las sociedades. En consecuencia, esto ha generado un aumento en la demanda de combustibles fósiles (Gwak et al, 2018).…”

Section: Introductionunclassified

Pasado, presente y perspectiva del bioetanol en Ecuador

Mendoza¹,

Parra²,

Puentes³

2022

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Desde 2010 en Ecuador se estableció como política energética la utilización de gasolina con 10% de bioetanol, esto en favor de la reducción de emisiones de gases de efecto invernadero; sin embargo, hasta la fecha se comercializa gasolina con 5% de bioetanol solo en ciertas provincias del país. El objetivo de este estudio fue evaluar el desarrollo de la industria del bioetanol en Ecuador en la última década y su perspectiva hacia el futuro, para ello se presenta el marco legal sobre biocombustibles en el país, así como un análisis de datos e informes de la empresa EP Petroecuador que determinan la trayectoria de la industria del bioetanol en el país entre 2010 y 2020, además se realizó un análisis bibliográfico de diferentes estudios realizados sobre la obtención de bioetanol a partir de diferentes materias primas, así como de pruebas de funcionamiento realizadas en vehículos de diferentes marcas con gasolina Ecopaís. Con base en la información revisada, se concluyó que Ecuador puede optar por otras materias primas para la producción de bioetanol, siguiendo experiencias de otros países, para de esta manera poder cumplir con el objetivo de proveer a todo el país, gasolina con un 10% de bioetanol.

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Economic evaluation of synthetic ethanol production by using domestic biowastes and coal mixture

Cited by 24 publications

References 22 publications

Economic Evaluation and Risk Premium Estimation of Rainfed Soybean under Various Planting Practices in a Semi-Humid Drought-Prone Region of Northwest China

Economic Evaluation and Risk Premium Estimation of Rainfed Soybean under Various Planting Practices in a Semi-Humid Drought-Prone Region of Northwest China

Fast Pyrolysis Downer Reactor: Effect of Reactor Geometry on the Hydrodynamics

Pasado, presente y perspectiva del bioetanol en Ecuador

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