The limiting effect of manganese phase of oceanic cobalt-rich crust reduction by sawdust in acid leaching

doi:10.1016/j.scp.2020.100346

	The limiting effect of manganese phase of oceanic cobalt-rich crust reduction by sawdust in acid leaching
	Ju, Jinrong 1,2; Feng, Yali 1; Li, Haoran 2; Yu, Hao 1; Wu, Hao 1; Liu, Shunliang 2
刊名	SUSTAINABLE CHEMISTRY AND PHARMACY
	2021-04-01
卷号	19 页码:11
关键词	Oceanic cobalt-rich crust Sawdust Manganese oxide Step by step reduction Acid leaching efficiency
DOI	10.1016/j.scp.2020.100346
英文摘要	Ocean cobalt-rich crust is rich in Co, Cu, Ni, Mn and other valuable metals. In this study, the valuable metals in cobalt-rich crust, which was reduced using waste sawdust, can be effectively recovered by acid leaching. The results show the formation of manganese oxide in the reduction process has a certain restriction on sulfuric acid leaching. The reduction process is gradually completed from the surface layer to the core (MnO2 -> Mn2O3 -> Mn3O4 -> MnO). The reduction products at any stage are always composed of one or two oxides of the adjacent valence state of manganese, which lead to different reaction processes and products with sulfuric acid. At the same time, manganese dioxide precipitates formed by Mn2O3 and Mn3O4 will remove a small amount of valuable metal ions from the solution, reducing the recovery of Mn, Cu, Co and Ni. The leaching efficiency of Mn, Cu, Co and Ni could reach 99.96%, 98.86%, 99.89% and 99.35% respectively using 0.5 mol/L sulfuric acid to leach 50 min at 25 degrees C.
资助项目	Long term special project for National, Chinese Academy of Sciences, Beijing, China[KTHT-2019-01] ; key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000621039400002
资助机构	Long term special project for National, Chinese Academy of Sciences, Beijing, China ; key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/47854]
专题	中国科学院过程工程研究所
通讯作者	Feng, Yali
作者单位	1.Univ Sci & Technol Beijing, Civil & Resource Engn Sch, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ju, Jinrong,Feng, Yali,Li, Haoran,et al. The limiting effect of manganese phase of oceanic cobalt-rich crust reduction by sawdust in acid leaching[J]. SUSTAINABLE CHEMISTRY AND PHARMACY,2021,19:11.
APA	Ju, Jinrong,Feng, Yali,Li, Haoran,Yu, Hao,Wu, Hao,&Liu, Shunliang.(2021).The limiting effect of manganese phase of oceanic cobalt-rich crust reduction by sawdust in acid leaching.SUSTAINABLE CHEMISTRY AND PHARMACY,19,11.
MLA	Ju, Jinrong,et al."The limiting effect of manganese phase of oceanic cobalt-rich crust reduction by sawdust in acid leaching".SUSTAINABLE CHEMISTRY AND PHARMACY 19(2021):11.