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Assessment of global sustainability of bioenergy production in a water-food-energy perspective

机译：从水-食物-能源的角度评估生物能源生产的全球可持续性

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摘要

One of most demanding problems for decision makers and for process engineers is the design of a proper energy strategy to guarantee clean energy supply. This problem is complex and cannot be assessed considering only the standard efficiency criteria used in the past. The process of energy production needs to be analyzed in its completeness, from seed to consumption. This paper deals with the issue of bioenergy production following a nexus perspective, considering the link among water, food and energy. In particular, an objective function depending on the most important resources required in bioenergy production is defined so that it can be simply optimized. Considering the parameter interrelationship among water, food and land (the so-called water-food-energy nexus) the method gives the instruments to determine, in one single function, the optimal condition with respect to these resources. Two cases of study are analysed, dissimilar regarding the geographical location, environmental resources availability for energy production and food security. Results show how the proposed method is able to describe the present sustainability of bioenergy production in a certain site. Furthermore, it can help to investigate the existence of bottlenecks related to the current situation of the site and, at the same time, it can highlight future opportunities in producing sustainable bioenergy.
机译：对于决策者和过程工程师而言，最苛刻的问题之一是设计适当的能源策略以确保清洁能源的供应。这个问题很复杂，仅考虑过去使用的标准效率标准就无法评估。从种子到消耗，都需要对能源生产过程的完整性进行分析。本文从联系的角度探讨了生物能源生产的问题，并考虑了水，食物和能源之间的联系。特别地，定义了取决于生物能源生产所需的最重要资源的目标函数，以便可以对其进行简单优化。考虑到水，粮食和土地之间的参数相互关系（所谓的水—食物—能源关系），该方法提供了一种工具，可以确定针对这些资源的最佳条件。分析了两个研究案例，它们在地理位置，能源生产的环境资源可用性和粮食安全方面存在差异。结果表明，所提出的方法如何能够描述某个地点目前生物能源生产的可持续性。此外，它可以帮助调查与该站点当前状况相关的瓶颈的存在，同时，它可以突出显示产生可持续生物能源的未来机会。

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