从废物到肥料的营养循环:从LCA研究的角度来看
1Material Flow Management and Resource Economy, Institute IWAR, Technical University of Darmstadt, Franziska-Braun-Straße 7, 64287 Darmstadt, Germany.
The Science of the total environment
|January 29, 2025
概括
废物农业链中的营养循环需要强大的生命周期评估 (LCA) 方法. 仔细的LCA建模对于优化循环经济 (CE) 途径和确保可持续资源管理至关重要,特别是在全球南方.
科学领域:
- 环境科学 环境科学
- 循环经济研究 循环经济研究
- 废物管理 废物管理
背景情况:
- 营养循环性将废物/废水流与农业相结合,体现循环经济 (CE) 原则.
- 从废物回收营养到肥料,提高了资源管理,并连接技术和生物循环.
- 复杂的CE系统需要严格的评估工具,如生命周期评估 (LCA),以评估权衡和潜力.
研究的目的:
- 提供当前营养循环实践的全面概述.
- 批判性地分析LCA在营养CE路径中的适用性和局限性.
- 确定用于营养回收的LCA的方法改进的关键领域.
主要方法:
- 审查有关营养循环路径的现有文献 (直接土地应用,废水处理整合,有针对性的回收利用).
- 对CE应用的生命周期评估 (LCA) 方法的批判性分析.
- 在LCA研究中评估系统建模设置,功能单元,分配方法和影响指标.
主要成果:
- 营养物质回收技术显示出有限的选择性,尽管输入流的限制.
- LCA对于指导营养循环是有价值的,但可以受到系统建模选择的限制.
- 较低的数据尺度和不完整的系统分析限制了LCA完全捕捉CE特征的能力.
结论:
- 对于特定的CE方面,LCA中需要有意识的方法选择.
- 全面评估是必要的,以捕捉升级收益,工艺效率和工业共生.
- 这些发现为未来的LCA营养循环研究提供了基础,这对全球南方至关重要.
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