Leaching characteristic and environmental implication of rejectionrocks from Huainan Coalfield, Anhui Province, China

doi:10.1016/j.gexplo.2014.03.010

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Leaching characteristic and environmental implication of rejectionrocks from Huainan Coalfield, Anhui Province, China
	Zhou,CC(Zhou,Chongcai)[1,2]; Liu,GJ(Liu,Guijian)[1,2]; Fang,T(Fang,Ting)[1]; Sun,RY(Sun,Ruoyu)[1]; Wu,D(Wu,Dun)[1]
	2014
发表期刊	Journal of Geochemical Exploration
卷号	143 页码:54-61
文章类型	期刊论文
摘要	Rejection rocks including intra-seam parting, boundary roof and floor intimately associated with coal seams, are commonly produced along with bulk coal. In general, these non-combustible rocks are rejected during coal processing activities, accumulated on the surface, and subjected to natural weathering and leaching. The degree that the rejection rocks threaten the surrounding ecosystems is determined by total concentrations, modes of occurrence of hazardous elements and minerals therein. Three hundred and ninety-four samples of coal seam parting (30), roof (182) and floor (182) in the Huainan coalfield were collected to investigate the geochemical characteristics and environmental risks of rejection rocks. The morphological analysis revealed that rejection rocks are composed of lithic fragments with organic and inorganic layering, clay minerals, quartz, pyrite and chlorite. Correlation analysis between elements and ash yield suggested that most of the environmentally sensitive elements (As, Cd, Co, Cr, Cu, Mn, Ni, Pb, Se, Sn V and Zn) are associated with inorganic matter, but boron is mainly associated with organic matter. In-house sequential leaching experiments conducted on selected rejection rocks showed that the rejection rocks from Huainan Coalfield could be suitable for landfill under high regularization and management. However, in the currently unconfined deposits, trace elements (such as Cu, Ni, Pb, Sb, Sn and Zn possibly) may pose a medium risk to the ecosystem.
关键词	Huainan Coalfield Rejection Rocks Leaching Behavior Environmental Characterization
DOI	10.1016/j.gexplo.2014.03.010
收录类别	SCI
语种	英语
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/9872
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Liu,GJ(Liu,Guijian)[1,2]
作者单位	1.CAS Key Laboratory of Crust–Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China
推荐引用方式 GB/T 7714	Zhou,CC,Liu,GJ,Fang,T,et al. Leaching characteristic and environmental implication of rejectionrocks from Huainan Coalfield, Anhui Province, China[J]. Journal of Geochemical Exploration,2014,143:54-61.
APA	Zhou,CC,Liu,GJ,Fang,T,Sun,RY,&Wu,D.(2014).Leaching characteristic and environmental implication of rejectionrocks from Huainan Coalfield, Anhui Province, China.Journal of Geochemical Exploration,143,54-61.
MLA	Zhou,CC,et al."Leaching characteristic and environmental implication of rejectionrocks from Huainan Coalfield, Anhui Province, China".Journal of Geochemical Exploration 143(2014):54-61.

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