Geochemical Evaluation of Enrichment of Rare-Earth and Critical Elements in Coal Wastes from Jurassic and Permo-Carboniferous Coals in Ordos Basin, China

doi:10.1007/s11053-019-09555-9

	Geochemical Evaluation of Enrichment of Rare-Earth and Critical Elements in Coal Wastes from Jurassic and Permo-Carboniferous Coals in Ordos Basin, China
	Hussain, Rahib 1,2; Luo, Kunli 1
刊名	NATURAL RESOURCES RESEARCH
	2020-06-01
卷号	29 期号:3 页码:1731-1754
关键词	China Coal ash Jurassic coal Permo-Carboniferous coal Rare-earth recovery Critical elements
ISSN号	1520-7439
DOI	10.1007/s11053-019-09555-9
通讯作者	Luo, Kunli(luokl@igsnrr.ac.cn)
英文摘要	Coal waste is a potential source of rare-earth elements (REEs) and some economically critical elements recovery. The present study reports the abundance and enrichment of REEs and critical elements in the Hancheng Permo-Carboniferous (Weibei coalfield) and Binxian Jurassic coals (Huanglong coalfield) of Shaanxi, China. The Binxian coal is distinctly enriched in all REEs. The Hancheng coal is enriched in Y, Ce, Sc, La, Yb, Nd, Pr, Gd, Er, Sm and Dy and depleted in Lu, Eu, Ho, Tb and Tm, compared with that of the average earth's crust abundance (ECA), world coal and the US coal. In the Binxian raw coal, the REEs contents, namely Sc 13.8, Y 13.1, La 27.8, Ce 48.49, Sm 4.1, Nd 22, Eu 0.8, Gd 3.8, Pr 5.43, Dy 2.5, Er 1.4 and Yb 1.3 in mg kg(-1). The contents (mg kg(-1)) of REEs in the Hancheng raw coal were Sc 8.8, Y 18.6, La 34.8, Ce 60.2, Nd 26, Yb 1.8, Eu 01, Pr 6.71, Sm 5.3, Dy 3.4, Tb 0.66, Er 1.9 and Gd 5.16. The contents (mg kg(-1)) of critical elements in the Binxian raw coal were Cr 30.8, Pb 41.5, Ni 49.7, Cu 35.7, Ba 257.9, V 51.7, Zn 63.1, Li 135, Ga 20.6, U 2.9, Th 10.2 As 12.7, Al 98,887, Fe 23,916 and Ti 4289. The contents (mg kg(-1)) of critical elements in the Hancheng coal were Cr 384, Pb 56.1, Ni 93.9, Cu 49.5, Ba 371, V 90.7, Zn 7653, Li 183, Ga 35.9, U 4.9, Th 17.7, As 10.1, Al 108,344, Fe 20,433 and Ti 2873. The contents of REEs in the Binxian and Hancheng coals were not in a promising range, whereas some of the critical elements were highly abundant. The Al2O3/TiO2 ratio indicated that the Ordos Basin sediment was derived from intermediate-felsic rocks with a slight variation (r = 0.98). The Eu and Gd show positive anomalies with negative Ce anomalies almost in all the samples. The positive anomalies of Gd represent the intrusion of hydrothermal fluid with possibly Ba interference in the Binxian coal. The high volatile matter in the Binxian coal reflects bituminous to anthracite coal, whereas the low volatility of the Hancheng coal reflects peat to lignite coal. The recovery of the REEs and critical elements as a by-product from these coals may not only increase the revenue but will also lead to an improvement in the environmental quality.
WOS关键词	COMBUSTION BY-PRODUCTS ; PB-NB-GA ; TRACE-ELEMENTS ; INNER-MONGOLIA ; FLY-ASH ; HUAINAN COALFIELD ; SEDIMENTARY-ROCKS ; SHAANXI PROVINCE ; WESTERN GUIZHOU ; MINE
WOS研究方向	Geology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000526461900015
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133653]
专题	中国科学院地理科学与资源研究所
通讯作者	Luo, Kunli
作者单位	1.Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10080, Peoples R China
推荐引用方式 GB/T 7714	Hussain, Rahib,Luo, Kunli. Geochemical Evaluation of Enrichment of Rare-Earth and Critical Elements in Coal Wastes from Jurassic and Permo-Carboniferous Coals in Ordos Basin, China[J]. NATURAL RESOURCES RESEARCH,2020,29(3):1731-1754.
APA	Hussain, Rahib,&Luo, Kunli.(2020).Geochemical Evaluation of Enrichment of Rare-Earth and Critical Elements in Coal Wastes from Jurassic and Permo-Carboniferous Coals in Ordos Basin, China.NATURAL RESOURCES RESEARCH,29(3),1731-1754.
MLA	Hussain, Rahib,et al."Geochemical Evaluation of Enrichment of Rare-Earth and Critical Elements in Coal Wastes from Jurassic and Permo-Carboniferous Coals in Ordos Basin, China".NATURAL RESOURCES RESEARCH 29.3(2020):1731-1754.