在教学生命周期评估中使用违反直觉的可持续性示例:一个案例研究

IF 5.4 Q1 ENVIRONMENTAL SCIENCES
Andrea Hicks
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引用次数: 0

摘要

流行媒体强化了什么产品对环境有害或不有害的想法,通常只考虑整个产品生命周期的一小部分,例如一次性产品的寿命结束,或单一的环境考虑。这导致了违反直觉的可持续性例子,一种产品通常被认为比其同类产品对环境的影响大得多,但事实并非如此。一次性塑料吸管就是这样一个例子,它被用作基于项目的生命周期评估(LCA)课程的课程项目。在课程前后,调查了学生对哪种吸管对环境最好和最差的看法,目的是首先了解大众媒体对最初排名的影响,其次了解课程项目完成后排名的变化。对课程经验的反思也被用来衡量学生对生命周期评价和可持续性的理解是如何因课程而改变的。总的来说,学生们对哪种秸秆选择对环境影响最大和最小的理解随着课程的进行而发生了变化,尤其是对环境影响的看法更加微妙。指导学生的反思指出了关于可持续性和生命周期评价之间关系的四个主要关注领域:生命周期评价揭示真相,生命周期评价用于决策,一次性产品并不总是对环境影响最大,以及使用生命周期评价改变他们对可持续性的概念。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Using counterintuitive sustainability examples in teaching life cycle assessment: A case study

Popular media has reinforced ideas of what products are or are not environmentally detrimental, often only considering a fraction of the overall product life cycle, such as the end of life for single use products, or a single environmental consideration. This leads to counterintuitive sustainability examples, where a product is commonly thought to be much more environmentally impactful than its counterparts, but that actually is not universally true. Single use plastic drinking straws are one such example, which were used as the course project in a project based life cycle assessment (LCA) course. Students’ perceptions of which straws were the best and worst for the environment were surveyed both before and after the course, in order to see first the effect of the popular media on the initial ranking and second how the ranking changed after completion of the course project. Reflections on the course experience were also utilized to gauge how the students’ understanding of both LCA and sustainability changed as a result of the course. In general, students’ understanding of which straw option had the greatest and least environmental impact changed as a result of the course, in particular enabling a more nuanced view of environmental impact. The guided student reflections indicated four major areas of focus regarding the relationship between sustainability and LCA: LCA as revealing truth, LCA for decision making, single use products are not always the most environmentally impactful, and using LCA to change their concept of what is sustainable.

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来源期刊
Resources, conservation & recycling advances
Resources, conservation & recycling advances Environmental Science (General)
CiteScore
11.70
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