Aluminum: Recycling and Carbon/Environmental Footprint
Aluminum: Recycling and Carbon/Environmental Footprint
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铝：回收和碳/环境足迹
DOI：
10.1007/s11837-020-04325-y
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发表时间：
2020
期刊：
影响因子：
2.6
通讯作者：
H. Peng
中科院分区：
文献类型：
--
作者：
D. Wong;A. Kvithyld;H. Peng
本专题介绍了管理铝业可持续发展挑战的一些最新技术发展和研究。正如本月刊《JOM：The Magazine》上的一篇内容丰富的小组讨论文章所述，这些挑战的规模是巨大的。例如，国际铝业研究所估计，为了实现联合国可持续发展目标及其对材料和能源(包括可再生能源)的所有需求，到2050年，全球原铝产量可能需要在2020年6500万吨的基础上，每年再增加2500万至3000万吨。在这种规模下，该行业目前的挑战将继续加剧，包括需要合乎道德和可持续地开采需求为5亿吨/年的铝土矿，需要大规模的解决方案来管理氧化铝精炼产生的2.5亿吨铝土矿残渣，以及该行业--特别是冶炼厂和氧化铝精炼厂--需要转向低碳能源组合，如果它要对减少温室气体排放产生影响的话。回收一直很重要，将降低初级生产面临的可持续性挑战的强度。这最近引起了新的关注，因为环境意识的提高，以及作为循环经济的一个关键要素。然而，如果没有真正的(实际)解决方案，循环经济就永远不会发生。这些巨大的可持续性挑战必须通过在全球范围内增加整个行业的知识、最佳实践和技术进步的协作和共享来应对，例如本专题中提供的文章中描述的那些
This special topic presents some of the latest technical developments and research into managing the aluminum industry’s sustainability challenges. As covered by an informative panel discussion article in this month’s issue of JOM: The Magazine, the magnitude of these challenges is significant. For instance, the International Aluminium Institute estimates that to meet the United Nations Sustainable Development Goals, with all its requirements for materials and energy resources (including renewables), primary aluminum production globally may need to increase another 25–30 million tons per year by 2050, on top of 2020s 65 million tons. At this scale, the industry’s current challenges will continue to intensify, including the need for ethical and sustainable mining of bauxite with a demand of 500 million tons/year, large-scale solutions to manage the 250 million tons of bauxite residue/year from alumina refining, and the need for the industry—particularly smelters and alumina refineries—to shift toward low-carbon energy mixes if it is to make an impact on reducing greenhouse gas emissions.Recycling has always been important and would reduce the intensity of sustainability challenges faced by primary production. This has recently drawn new attention because of increasing environmental awareness and as a key element of a circular economy. However, a circular economy will never take place without real (physical) solutions. These vast sustainability challenges must be met by increased collaboration and sharing of knowledge, best practices, and technological advances across the industry, on a global scale, such as those described in the articles presented in this special