Principle of Life Cycle Assessment and Cumulative Exergy Demand for Biodiesel Production: Farm-To-Combustion Approach

Nabavi‐Pelesaraei, Ashkan; Rafiee, Shahin; Mohammadkashi, Naghmeh; Chau, Kwok-wing; Mostashari-Rad, Fatemeh

doi:10.1007/978-3-030-90720-4_6

Cited by 16 publications

(5 citation statements)

References 98 publications

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“…30 There are also studies evaluating all stages of biodiesel production from a LCA and CExD perspective, including the agricultural stage, oil extraction, biodiesel production, combustion and final power generation. 31 There is also research to identify the most sustainable irrigation systems and create a new eco-consumption environmental toxicity index. 32 Some scholars have also used mathematics, artificial neural networks (ANNs), and adaptive neuro-fuzzy inference system (ANFIS) methods to predict the output energy, economic profit, and global warming potential (GWP) of wheat production.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Life cycle assessment (LCA) can be considered as an effective method for assessing the environmental burden of CMW management scenarios in support of the SDGs under current key world conditions 30 . There are also studies evaluating all stages of biodiesel production from a LCA and CExD perspective, including the agricultural stage, oil extraction, biodiesel production, combustion and final power generation 31 . There is also research to identify the most sustainable irrigation systems and create a new eco‐consumption environmental toxicity index 32 .…”

Section: Literature Reviewmentioning

confidence: 99%

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The impact of globalization on comprehensive environmental efficiency and its sub‐stage efficiencies: An adjusted range adjusted measure network data envelopment analysis model approach

Huang

2023

Env Prog and Sustain Energy

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Globalization is a worldwide trend, and environmental governance requires global cooperation. There are environmental issues caused by globalization, such as "environmental justice" and "externalization of cost." However, several key questions remain about the impact of globalization on the environment. This article attempts to decompose the comprehensive environmental efficiency and analyze their inner relationship its determinants. This study adopts range adjusted measure network data envelopment analysis (DEA) model to measure the overall efficiency and decompose comprehensive efficiency into two stages and investigate the interrelationship among them, based on the data from 30 cities along the Yangtze River. This can reveal the "black box" of the DEA and the interrelationship between each stage. The panel quantile method is adopted to analyze the impact of influencing factors, especially globalization, on efficiency. This article creatively builds the in-depth openness index to measure the tendency of indepth openness. The following findings are identified: (1) Among sub-stages, environmental governance efficiency plays a more significant role in comprehensive environmental efficiency. (2) Foreign direct investment, urbanization, and industrial structure negatively influence efficiency, while the degree of openness, per capita GDP, and population density are positive determinants. (3) With the decrease of the HUANG index, the impact of globalization on the local environment shifted from supporting the pollution halo hypothesis toward supporting the pollution haven hypothesis. (4) Sustainability with harmony between humans and nature is recommended and can be achieved. The result of this study can help policymakers to find an effective way to achieve sustainability and improve the environmental efficiency effectively.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

The impact of globalization on comprehensive environmental efficiency and its sub‐stage efficiencies: An adjusted range adjusted measure network data envelopment analysis model approach

Huang

2023

Env Prog and Sustain Energy

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“…Energy consumption globally is constantly increasing, resulting in increased emissions of gases and global warming [4]. Growing concerns about emissions are attributed to the use of fossil fuels as sources of energy [5]. The burning of fossil fuels raises CO 2 and greenhouse gas (GHG) levels in the atmosphere, which leads to increased global climatic changes, especially warming [6].…”

Section: Introductionmentioning

confidence: 99%

Energy Use and Greenhouse Gas Emissions in Selected Tea Factories in Kenya

Kibet,

Letema

2023

Preprint

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Tea sector is a major contributor to Kenya’s economy through foreign exchange via export. However, extensive amount of energy is required to produce one kilogram of tea, making tea processing energy-intensive. Comparing greenhouse gas emissions from different types of energy consumed in tea factories is imperative to enable policymakers make informed intervention in emission reduction. Reducing greenhouse gas emissions in tea factories is one of the pathways to meeting Kenya’s nationally determined 32% reduction of carbon emissions by 2030 and commitment to the Paris Agreement. This paper assesses greenhouse gas emissions from different sources of energy used in four tea factories in Kenya. The Intergovernmental Panel on Climate Change emission factor is used to calculate the total emissions of each type of energy used for 5 years. Life cycle assessment using simapro software is used to assess the specific compound causing the emission. The findings reveal that the 5-year greenhouse gas emissions by biogas, solar, wood, briquettes, and electricity are 336,111, 7,108, 20,201.06, and 1,338.28 kg CO2/kWh, respectively. Firewood has the highest concentration of carbon dioxide, while solar energy has the least. Analysis of variance confirms significant difference (0.05>p=0.0272) in greenhouse gas emissions from the different energy sources. Post-hoc analyses shows a significant difference in emissions between solar and firewood (p<0.0125) and no significant difference between other sources of energy. Sustainability in the tea sector can be achieved through switching to macadamia briquettes as a source of thermal energy and a combination of electricity and solar for electrical energy.

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“…Acetylene is a key intermediate in the formation of PAHs (polycyclic aromatic hydrocarbons) during the combustion of hydrocarbon fuels [5] and has its reactive characteristics during the detonation of hydrocarbon fuels. Understanding the acetylene-rich detonation process is important in several fields, including the combustion efficiency of actual gas phase fuel [6][7][8], material preparation [9,10], human health effects [11], and astrophysical explosion process [12]. In particular, it is relevant to understand the propagation of the acetylene-rich detonation process and the component distribution behind the detonation wave-front, as well as the consumption and regeneration process.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Gaseous Detonation Performance and Wall Reflection Effect of Acetylene-Rich Fuel

Gao

Tang

2022

Energies

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The efficient utilization of energy in rich fuel detonation processes and the effective control method of soot are important topics in combustion research. In this paper, we numerically study the detonation wave behavior of acetylene–air systems in rich fuel condition by using a reduced reaction mechanism. The non-stiff terms of the governing equations are solved explicitly using the gas kinetic scheme, and the stiff terms are solved implicitly. Our results show that the acetylene pyrolysis is the dominant reaction process. The oxidation reaction is exploited to initiate the reaction induction process, providing the required energy to overcome the potential energy barrier. The secondary detonation structure is due to the stable interaction of the transverse waves and the combined action of the vinyl reaction system, thus effectively improve the energy release rate and providing a powerful solution for the fuel-rich high-energy release of advanced heat engines. The area of the unreacted pocket increases with the acetylene concentration, resulting in an irregular wave-front and detonation cell. The reflected shock wave impacting on the wall induces the secondary reaction of the detonation products. The concentration of polycyclic aromatic hydrocarbons decreases significantly and regenerates near the wall. Our approach provides an effective tool for controlling detonation soot and the preparation of carbon particles.

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Principle of Life Cycle Assessment and Cumulative Exergy Demand for Biodiesel Production: Farm-To-Combustion Approach

Cited by 16 publications

References 98 publications

The impact of globalization on comprehensive environmental efficiency and its sub‐stage efficiencies: An adjusted range adjusted measure network data envelopment analysis model approach

The impact of globalization on comprehensive environmental efficiency and its sub‐stage efficiencies: An adjusted range adjusted measure network data envelopment analysis model approach

Energy Use and Greenhouse Gas Emissions in Selected Tea Factories in Kenya

Numerical Simulation of Gaseous Detonation Performance and Wall Reflection Effect of Acetylene-Rich Fuel

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