Exposure of heavy metals in coal gangue soil, in and outside the mining area using BCR conventional and vortex assisted and single step extraction methods. Impact on orchard grass

Chemosphere ◽  
2020 ◽  
Vol 255 ◽  
pp. 126960 ◽  
Author(s):  
Arsalan A. Qureshi ◽  
Tasneem G. Kazi ◽  
Jameel A. Baig ◽  
Mohammad Balal Arain ◽  
Hassan I. Afridi
Keyword(s):  
Heavy Metals ◽  
Mining Area ◽  
Extraction Methods ◽  
Single Step ◽  
Coal Gangue ◽  
Orchard Grass

scholarly journals Characteristics of leaching of heavy metals from low-sulfur coal gangue under different conditions

2021 ◽  
Author(s):  
Chang Li ◽  
Liugen Zheng ◽  
Chunlu Jiang ◽  
Xing Chen ◽  
Shuaishuai Ding
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Mining Area ◽  
Pollution Source ◽  
Coal Gangue ◽  
Mining Areas ◽  
Precipitation Characteristics ◽  
Leaching Experiments ◽  
Acidic Conditions ◽  
Low Sulfur

AbstractCoal gangue is the main pollution source of mining areas. When coal gangue is stacked and recycled, the heavy metal elements contained in it are released by natural weathering and leaching, which causes damage to the surrounding ecological environment. In this study, the leaching and precipitation characteristics of heavy metals in low-sulfur coal gangue under different environmental conditions were simulated by indoor dynamic leaching experiments, which provided a theoretical basis for environmental restoration of the mining area. The conclusions are as follows: higher heavy metal content in low-sulfur coal gangue is associated with greater, leaching of heavy metals; acidic conditions promote the release of heavy metals in low-sulfur coal gangue; and more precipitation is associated with better release of heavy metals from the low-sulfur coal gangue.

scholarly journals Speciation characteristics of heavy metals in soil around typical coal gangue hills in fengfeng mining area

2021 ◽  
Vol 2021 (1) ◽  
pp. 012059
Author(s):  
Xinzhou Wang ◽  
De Tian ◽  
Mingxu Gu ◽  
Huijie Liang
Keyword(s):  
Heavy Metals ◽  
Mining Area ◽  
Coal Gangue

Characterization of heavy metals in coal gangue-reclaimed soils from a coal mining area

2018 ◽  
Vol 186 ◽  
pp. 1-11 ◽  
Author(s):  
Quan Tang ◽  
Liyuan Li ◽  
Song Zhang ◽  
Liugen Zheng ◽  
Chunhui Miao
Keyword(s):  
Heavy Metals ◽  
Coal Mining ◽  
Mining Area ◽  
Coal Gangue ◽  
Coal Mining Area ◽  
Reclaimed Soils

scholarly journals Research on heavy metal level and co-occurrence network in typical ecological fragile area

2021 ◽  
Author(s):  
Yiwei Zhao ◽  
Liangmin Gao ◽  
Fugeng Zha ◽  
Xiaoqing Chen ◽  
Xiaofang Zhou ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Human Factors ◽  
Human Life ◽  
Mining Area ◽  
Parent Material ◽  
Control Value ◽  
Pollution Levels ◽  
Soil Parent Material ◽  
Sampling Points

AbstractDue to the special sensitivity of typical ecologically fragile areas, a series of human life, mining, and other activities have a greater impact on the environment. In this study, three coal mines in Ordos City on the Loess Plateau were selected as the study area, and the pollution levels of heavy metals in the area were studied by measuring As, Hg, Cr, Cd, Cu, Ni, and Pb in the soil of 131 sampling points. Combined with the concept of “co-occurrence network” in biology, the level of heavy metals in soil was studied using geostatistics and remote sensing databases. The results showed that the concentrations of Hg, Cr, Ni, Cu, and Pb in more than half of the sampling points were higher than the local environmental background value, but did not exceed the risk control value specified by China, indicating that human factors have a greater influence, while Cd and As elements are mainly affected Soil parent material and human factors influence. Heavy metal elements have nothing to do with clay and silt but have an obvious correlation with gravel. Cd, Pb, As and Ni, Cd, Cr are all positively correlated, and different heavy metals are in space The distribution also reflects the autocorrelation, mainly concentrated in the northeast of the TS mining area and the middle of the PS mining area.

Pollution of organic compounds and heavy metals in a coal gangue dump of the Gequan Coal Mine, China

2013 ◽  
Vol 32 (3) ◽  
pp. 241-247 ◽  
Author(s):  
Jingsen Fan ◽  
Yuzhuang Sun ◽  
Xinyu Li ◽  
Cunliang Zhao ◽  
Duanxin Tian ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Compounds ◽  
Coal Mine ◽  
Coal Gangue

scholarly journals Analysis of the distribution of heavy metals in the soils of Bagega mining area Zamfara state, Nigeria

2016 ◽  
Vol 9 (1) ◽  
pp. 150 ◽  
Author(s):  
K. Salisu ◽  
M.A. Yusuf ◽  
M. Ahmed ◽  
M. U. Mohammed ◽  
I. A. Umar
Keyword(s):  
Heavy Metals ◽  
Mining Area
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