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DOI	10.1007/s11783-024-1767-8
	Direct generation of Zn metal using laser-induced ZnS to eradicate carbon emissions from electrolysis Zn production
	Chen, Ying; Duan, Ning; Jiang, Linhua; Xu, Fuyuan; Zhu, Guangbin; Wang, Yao; Liu, Yong; Cheng, Wen; Xu, Yanli
发表日期	2024
ISSN	2095-2201
EISSN	2095-221X
起始页码	18
结束页码	1
卷号	18 期号:1
英文摘要	In response to the goal of net-zero emissions proposed by Intergovernmental Panel on Climate Change, Chinese government has pledged that carbon emissions will peak by 2030, and achieve carbon neutrality by 2060. However, the high carbon energy structure of traditional industries has aggravated environmental problems, such as greenhouse effect and air pollution. The goal of carbon neutrality will be difficult to achieve without the development of disruptive theories and technologies. The electrolytic zinc industry requires high-temperature roasting at & SIM;1000 & DEG;C, generating large amounts of greenhouse gases and SO2. High concentrations of sulfuric acid (200 g/L) are subsequently used for electrolysis, and each ton of zinc produced generates 50 kg of anode slime with lead content of up to 16%, as well as 0.35 m3 of wastewater containing zinc and lead. To solve these problems, an optical metallurgy method is proposed in this study. The proposed method uses laser-induced photoreduction to decompose ZnS and reduce metal ions to metal. Results indicate that Zn0 and S8 can be detected on the surface of ZnS at a specific wavelength and laser fluence. The generation mechanism of Zn0 is such that laser induces an electronic transition that breaks ionic bond in ZnS, resulting in its decomposition and photoreduction to Zn0 under an inert argon gas atmosphere. This method does not reduce other metals in the mineral since it does not use high-temperature roasting, providing a new way of producing high-purity metal without greenhouse gas emissions and heavy metal pollution caused by traditional zinc electrolysis.
英文关键词	Laser metallurgy; ZnS; Photochemical reduction; Zinc
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001062181000003
来源期刊	FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299149
作者单位	Tongji University; Tianjin University; Anhui University of Science & Technology
推荐引用方式 GB/T 7714	Chen, Ying,Duan, Ning,Jiang, Linhua,et al. Direct generation of Zn metal using laser-induced ZnS to eradicate carbon emissions from electrolysis Zn production[J],2024,18(1).
APA	Chen, Ying.,Duan, Ning.,Jiang, Linhua.,Xu, Fuyuan.,Zhu, Guangbin.,...&Xu, Yanli.(2024).Direct generation of Zn metal using laser-induced ZnS to eradicate carbon emissions from electrolysis Zn production.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,18(1).
MLA	Chen, Ying,et al."Direct generation of Zn metal using laser-induced ZnS to eradicate carbon emissions from electrolysis Zn production".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 18.1(2024).