A critical review on environmental impact assessment of typical metal production processes
With the acceleration of the industrialization,the criticality of metal resources has become a concern of China and even the world,and the large-scale use of metal resources makes its environmental impact more and more serious in production processes.Under dual-carbon goals,in order to select metal production processes with low environmental impact,this study focused on 62 typical metal industrial production processes,summarized the relevant environmental impact assessment studies,and related to carbon footprint analysis is summarized during metal production processes.The environmental impacts of ferrous metals as well as non-ferrous light and heavy metals production processes were focused on.In the production of ferrous metals,the environmental impact can be reduced by using biomass instead of fossil energy,choosing suitable Mn smelting methods and reducing the content of Cr6+in nature.Non-ferrous light metals were currently produced in a large number of metals with diversified production methods,which had a greater impact on greenhouse gas emissions and ecological toxicity.Heavy metals have a great impact on toxic effects such as ecotoxicity and human health.The mining and refining process of precious metals will have a serious impact on the atmosphere and water,which should be paid attention to.There were few studies on the evaluation of rare metals and quasi-metals,which mainly focused on Li and V,however its importance is becoming more and more significant,and the development potential is huge.Compared with other metals,the carbon emissions caused by precious metals are more significant,and the five metals with the highest Global Warming Potential(GWP)are Rh,Pt,Au,Ir and Sc.This research can effectively solve the environmental problems of metal production while promoting industrial development through green and efficient metal production processes.
metal industrial production processenvironmental impact assessmentwaste treatmentenvironmentpollution
万方数据
维普
