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从废物生产气和性水电解之间的生命周期评估比较

Shengqiang Yang¹, Dan Mao², Zhiqiang Yu¹

¹Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR China; National Engineering Research Center for Vacuum Metallurgy, Kunming 650093, PR China.

The Science of the total environment

|February 19, 2024

概括

这项研究比较了从废物中通过钻石切割废物 (DSSW) 性催化水解 (DACH) 与性水电解 (AEL) 产生的环境影响. DACH路线显示出更高的环境影响,主要来自原材料使用,而AEL则显示出更高的环境影响.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

全球变暖需要可持续的解决方案,增加对环境问题的关注.
晶体对于光伏和半导体至关重要,但其加工会产生大量的废物.
废物为资源回收和可持续气生产提供了机会.

研究的目的:

通过使用DACH路线,评估从钻石丝切割废物 (DSSW) 生产的环境影响.
为了比较DACH气生产路线与性水电解 (AEL) 路线的环境性能.
确定每个生产途径的关键环境热点和影响因素.

主要方法:

生命周期评估 (LCA) 方法用于环境影响评估.
在DSSW性催化水解 (DACH) 和性水电解 (AEL) 水生产路径之间进行了比较分析.
包括GWP,PED和IWU在内的环境影响指数被量化和比较.

主要成果:

气生产阶段是DACH路线中9个环境影响指数的主要贡献者 (超过56%).
对于AEL路线,运营阶段对12个环境影响指数贡献了92%以上,制造业的影响可以忽略不计.
与AEL路线相比,DACH路线的环境影响 (例如GWP,PED,IWU) 显著更高.
在DACH中,间接影响来自原材料的使用,而AEL的影响主要来自电力消耗.

结论:

虽然使用废物,但DACH生产路线的环境负担比AEL高,主要是由于原材料投入.
AEL路线对环境的影响主要与电力消耗有关;利用可再生能源可以大幅减少其足迹.
优化DACH的原材料采购和将AEL转换为清洁能源对于提高这些生产方法的可持续性至关重要.

关键词:

性水的电解是性水的电解.气气是一种气.生命周期评估生命周期评估废物的废弃物是什么?

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