生物质资源的生命周期评估,用于生产气
Hsien H Khoo1, Eugene H Z Ho1, Ken S Yap1
1Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR), Singapore.
The Science of the total environment
|October 3, 2025
概括
来自生物质的生物生产为化石燃料提供了一个可持续的替代方案. 交换草的气化在各种途径中显示出最有利的环境影响评分.
科学领域:
- 生物技术和生物能源
- 生命周期评估 生命周期评估
- 可持续能源 可持续能源
背景情况:
- 全球日益增长的能源需求需要替代不可再生化石燃料.
- 生物是一种有前途的可再生能源.
- 五种生物质资源 (大米,草,甘,小麦,玉米茎) 被考虑用于生物生产.
研究的目的:
- 研究和比较不同生物质资源的各种生物生产过程.
- 通过使用生命周期评估 (LCA) 方法评估12个生物途径对环境的影响.
- 为了比较每个路径的能源需求,水足迹和土地足迹.
主要方法:
- 使用生命周期评估 (LCA) 来评估12种生物生产途径.
- 评估的关键LCA影响类别包括全球变暖潜力 (GWP),酸化潜力 (AP),欧化潜力 (EP) 和光化学臭氧创造潜力 (POCP).
- 标准化和加权评分程序用于比较分析,以及能源,水和土地足迹评估. 对能源和水足迹进行了错误分析.
主要成果:
- 在评估的选项中,米 (RS) 被确定为生产最不有利的生物质.
- 两种涉及转换草气化的途径表现出最有利的规范化和加权影响评分 (-7.61和-5.07).
- 由于LCA中使用的各种环境指标,在不同的生物过程中观察到碳和水足迹的显著变化.
结论:
- 交换草气化是可持续生物生产的高度有利途径.
- 生物质和生物工艺的选择显著影响气生产的环境足迹.
- 纳入详细错误分析的进一步研究对于提炼生物生产中的LCA结果至关重要.
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