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Key performance indicators for biogas production—methodological insights on the life-cycle analysis of biogas production from source-separated food waste
Energy ( IF 9 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.energy.2020.117462
Roozbeh Feiz , Maria Johansson , Emma Lindkvist , Jan Moestedt , Sören Nilsson Påledal , Niclas Svensson

Abstract The anaerobic digestion of food waste can not only enhance the treatment of organic wastes, but also contributes to renewable energy production and the recirculation of nutrients. These multiple benefits are among the main reasons for the expansion of biogas production from food waste in many countries. We present methodological insights and recommendations on assessing the environmental and economic performance of these systems from a life-cycle perspective. We provide a taxonomy of the value chain of biogas from food waste which describes major activities, flows, and parameters across the value chain with a relatively high detail. By considering the multiple functions of biogas production from food waste, we propose a few key performance indicators (KPI) to allow comparison of different biogas production systems from the perspectives of climate impact, primary energy use, nutrients recycling, and cost. We demonstrate the operational use of our method through an example, where alternatives regarding the heat supply of the biogas plant are investigated. We demonstrate how global and local sensitivity analyses can be combined with the suggested taxonomy and KPIs for uncertainty management and additional analyses. The KPIs provide useful input into decision-making processes regarding the future development of biogas solutions from food waste.

中文翻译:

沼气生产的关键性能指标——从源头分离的食物垃圾中生产沼气的生命周期分析的方法论见解

摘要 餐厨垃圾厌氧消化不仅可以加强对有机垃圾的处理,还可以促进可再生能源的生产和营养物质的再循环。这些多重好处是许多国家扩大利用食物垃圾生产沼气的主要原因之一。我们提出了从生命周期角度评估这些系统的环境和经济绩效的方法论见解和建议。我们提供了食物垃圾沼气价值链的分类,它以相对较高的细节描述了整个价值链中的主要活动、流程和参数。通过考虑餐厨垃圾生产沼气的多种功能,我们提出了一些关键绩效指标 (KPI),以便从气候影响、一次能源使用、养分回收和成本的角度比较不同的沼气生产系统。我们通过一个例子展示了我们方法的操作使用,其中研究了有关沼气厂供热的替代方案。我们展示了如何将全局和局部敏感性分析与建议的分类法和 KPI 相结合,以进行不确定性管理和其他分析。KPI 为有关未来利用食物垃圾开发沼气解决方案的决策过程提供了有用的输入。研究沼气厂供热的替代方案。我们展示了如何将全局和局部敏感性分析与建议的分类法和 KPI 相结合,以进行不确定性管理和其他分析。KPI 为有关未来利用食物垃圾开发沼气解决方案的决策过程提供了有用的输入。研究沼气厂供热的替代方案。我们展示了如何将全局和局部敏感性分析与建议的分类法和 KPI 相结合,以进行不确定性管理和其他分析。KPI 为有关未来利用食物垃圾开发沼气解决方案的决策过程提供了有用的输入。
更新日期:2020-06-01
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