A Multimedia Hydrological Fate Modeling Framework To Assess Water Consumption Impacts in Life Cycle Assessment,Environmental Science & Technology

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A Multimedia Hydrological Fate Modeling Framework To Assess Water Consumption Impacts in Life Cycle Assessment
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2018-03-30 00:00:00 , DOI: 10.1021/acs.est.7b05207
Montserrat Núñez ₁ , Ralph K. Rosenbaum ₁ , Shooka Karimpour ₂ , Anne-Marie Boulay _{3,

4} , Michael J. Lathuillière ₅ , Manuele Margni ₃ , Laura Scherer ₆ , Francesca Verones ₇ , Stephan Pfister ₈

Affiliation

Many new methods have recently been developed to address environmental consequences of water consumption in life cycle assessment (LCA). However, such methods can only partially be compared and combined, because their modeling structure and metrics are inconsistent. Moreover, they focus on specific water sources (e.g., river) and miss description of transport flows between water compartments (e.g., from river to atmosphere via evaporation) and regions (e.g., atmospheric advection). Consequently, they provide a partial regard of the local and global hydrological cycle and derived impacts on the environment. This paper proposes consensus-based guidelines for a harmonized development of the next generation of water consumption LCA indicators, with a focus on consequences of water consumption on ecosystem quality. To include the consideration of the multimedia water fate between compartments of the water cycle, we provide spatial regionalization and temporal specification guidance. The principles and recommendations of the paper are applied to an illustrative case study. The guidelines set the basis of a more accurate, novel way of modeling water consumption impacts in LCA. The environmental relevance of this LCA impact category will improve, yet much research is needed to make the guidelines operational.

中文翻译：

评估生命周期评估中的用水影响的多媒体水文命运模型框架

最近开发了许多新方法来解决生命周期评估（LCA）中耗水对环境的影响。但是，由于这些方法的建模结构和度量标准不一致，因此只能部分地进行比较和组合。此外，它们集中在特定的水源（例如河流）上，而没有描述水室（例如从河流通过蒸发到大气）和区域（例如大气对流）之间的运输流。因此，它们部分考虑了当地和全球的水文循环以及对环境的衍生影响。本文提出了基于共识的准则，以协调发展下一代耗水量LCA指标，重点是耗水量对生态系统质量的影响。为了包括对水循环各个隔间之间的多媒体水命运的考虑，我们提供了空间区域划分和时间规范指南。本文的原则和建议适用于示例性案例研究。该指南为更精确，新颖的LCA用水影响建模方法奠定了基础。该LCA影响类别的环境相关性将得到改善，但仍需要进行大量研究才能使该指南付诸实践。

更新日期：2018-03-31

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