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Nowadays, global nations express concerns regarding fossil fuel supplies, environmental pollution, and greenhouse gas emissions, increasing the demand for a shift towards renewable energy. The debate between food and fuel has prompted research into second-generation (2G) biofuels that rely on nonfood biomass. Lignocellulosic biomass (LCB) is an abundant resource, and it is a highly attractive renewable source of biofuels. They help reduce competition for land by utilizing nonfood materials, thus preventing biomass from ending up in landfills. The generation of biofuels from LCB involves a series of steps, encompassing the feedstock collection, pretreatment, conversion processes, and the separation and purification of targeted products. Evaluating the environmental implications of 2G biofuel production is of great significance. Factors such as feedstock choices, product generation, and economic viability require consideration. The sustainability of 2G biofuel production is evaluated by employing the life cycle assessment (LCA). As per ISO 14040/14044 standards, LCA consists of four key components: goal and scope, inventory analysis, impact assessment, and interpretation. The assessment of lignocellulosic biofuel production through LCA is significantly impacted by methodological factors, such as functional unit, system boundaries, allocation methods, and more. This chapter aims to synthesize and analyze the existing and latest knowledge regarding the LCA of lignocellulosic biofuel production. Additionally, it uses bioethanol production as an example to evaluate its environmental impacts in comparison with conventional sugar milling byproduct disposal methods, such as landfill and combustion. It is intended to identify possible hotspots and suggest improvement options to enhance the effectiveness of the biofuel production process. Future research directions could focus on developing standardized data collection methods, improving modeling techniques, and promoting the application of sustainable practices across the biofuel production chain based on LCB.

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Life Cycle Assessment (LCA) of Biofuel Production from Lignocellulosic Biomass

  • 章节

  • 发表日期：

    2025年

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  • Shiyou Pan,
  • Jiankai Lin,
  • Zhenchong Li,
  • Liqin Du,
  • Yutuo Wei

摘要

Nowadays, global nations express concerns regarding fossil fuel supplies, environmental pollution, and greenhouse gas emissions, increasing the demand for a shift towards renewable energy. The debate between food and fuel has prompted research into second-generation (2G) biofuels that rely on nonfood biomass. Lignocellulosic biomass (LCB) is an abundant resource, and it is a highly attractive renewable source of biofuels. They help reduce competition for land by utilizing nonfood materials, thus preventing biomass from ending up in landfills. The generation of biofuels from LCB involves a series of steps, encompassing the feedstock collection, pretreatment, conversion processes, and the separation and purification of targeted products. Evaluating the environmental implications of 2G biofuel production is of great significance. Factors such as feedstock choices, product generation, and economic viability require consideration. The sustainability of 2G biofuel production is evaluated by employing the life cycle assessment (LCA). As per ISO 14040/14044 standards, LCA consists of four key components: goal and scope, inventory analysis, impact assessment, and interpretation. The assessment of lignocellulosic biofuel production through LCA is significantly impacted by methodological factors, such as functional unit, system boundaries, allocation methods, and more. This chapter aims to synthesize and analyze the existing and latest knowledge regarding the LCA of lignocellulosic biofuel production. Additionally, it uses bioethanol production as an example to evaluate its environmental impacts in comparison with conventional sugar milling byproduct disposal methods, such as landfill and combustion. It is intended to identify possible hotspots and suggest improvement options to enhance the effectiveness of the biofuel production process. Future research directions could focus on developing standardized data collection methods, improving modeling techniques, and promoting the application of sustainable practices across the biofuel production chain based on LCB.