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

Li, Chang; Zheng, Liugen; Jiang, Chunlu; Xing, Chen; Ding, Shuaishuai

doi:10.1007/s40789-021-00416-6

Cited by 24 publications

(10 citation statements)

References 10 publications

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“…Groundwater sampled in open wells (25-30 m deep) during summer near an active coal mine in Dhanbad, India (Prasad et al, 2014), had higher concentrations of Cd, Cr, Cu, Fe and Pb when compared to the current study. Coal mining is generally associated with acid mine drainage laden with PTEs which can leach deep into groundwater (Li et al, 2021). Zhuang et al (2014) showed that well water from sources near a mining area of Dabaoshan, Guangdon, southern China, had higher concentrations of Cd, Cu and Pb than those found in the current study.…”

Section: Discussioncontrasting

confidence: 45%

Trace elements in groundwater near an abandoned mine tailings dam and health risk assessment (NE Zimbabwe)

Kanda

Makumbe

2021

WSA

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Groundwater from shallow hand-dug wells at an abandoned gold mine tailings dam was characterised for selected physicochemical parameters during dry and wet seasons of 2018 and 2019. Health risk exposure of the local population (adults and children) through ingestion and dermal exposure was assessed. Groundwater quality parameters were lower than international drinking water quality guidelines (p < 0.05). The parameters were significantly influenced by season of the year (As, Cl−, SO42−), nature (As, Cd, Cl−, Fe, NO3−, SO42−), depth (Cd, Cl−, Fe, Ni, SO42−) and direction of the well (Cu, Cl−, Fe, NO3−, Pb, SO42−) (p < 0.05) relative to the tailings dam. Groundwater did not pose non-carcinogenic risk due to studied trace elements. However, arsenic had the potential to cause medium to high cancer risk to the local population. We propose re-vegetation of the tailings dam, diversion of surface tailings drainage to a containment pond and the provision of continuous piped water supplies.

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Section: Discussioncontrasting

confidence: 45%

Trace elements in groundwater near an abandoned mine tailings dam and health risk assessment (NE Zimbabwe)

Kanda

Makumbe

2021

WSA

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“…Frontiers in Environmental Science frontiersin.org distributions likewise revealed an ambiguous association between their distribution trends and the Mn contaminated. This could indicate that natural mechanisms such as weathering and leaching of source elements were mostly responsible for their distributions (Li et al, 2021).…”

Section: Figurementioning

confidence: 99%

Spatial distribution and ecological risk assessment of heavy metals in manganese (Mn) contaminated site

Kabanda²,

Chen³

et al. 2022

Front. Environ. Sci.

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The spatial distribution, migration characteristics, and ecological risks of heavy metals in manganese (Mn) contaminated sites were studied by field investigation and geostatistical analysis. In this study, surface soil samples were collected from an Mn mine wasteland and the soil in this area was polluted by Mn, Pb, Cu, Cd, Zn, and Cr, and the corresponding element concentrations were 16.3, 15.4, 15.0, 9.90, 6.10, and 1.1 times of the limited standard, respectively. In addition, the soil in different samples in the same region has obvious heterogeneity. By using X-ray fluorescence spectrometry (XRF) and inductively coupled plasma-mass spectrometry (ICP-MS), the heavy metal concentrations in soil samples were determined. ICP-MS corroborated XRF for soil heavy metal determination and showed that XRF was a reliable and quick alternative for heavy metal determination in soil. To discover heavy metal distribution trends, distribution maps of heavy metals were created using the Kriging interpolation method. The geoaccumulation index (Igeo), improved Nemerow index (INI), and potential ecological risk index (RI) was used to assess the pollution degree and the environmental risk of metal pollution in the study area. The contamination degree of heavy metal is Mn > Cd > Pb > Zn > Cu > Cr. The spatial distribution and risk assessment of heavy metals in manganese contaminated sites will help to monitor the migration trajectory of heavy metals in mining areas and protect the soil from long-term accumulation of heavy metals. It provides the basis for heavy metal pollution remediation strategy and ecological risk management.

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“…The stacking of coal gangue has certain influence on the content of U in the surrounding soil, and there is pollution from exogenous U in every occurrence state of soil, which is closely related to the distance of coal gangue yard and the depth of soil [27]. U can migrate in soil by means of water-soluble, colloid, and clastic particles.…”

Section: The Modes Of Occurrencementioning

confidence: 99%

Basic Characteristics of Coal Gangue in a Small-Scale Mining Site and Risk Assessment of Radioactive Elements for the Surrounding Soils

Wang

et al. 2021

Minerals

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The accumulation/improper treatment of coal gangue will not only lead to waste of land, but also cause environmental pollution. Especially the impact of radioactive elements on the surrounding ecological environment is widely concerned by many scholars. In this study, the concentration of radioactive elements (uranium (U) and thorium (Th)) of small-scale coal gangue mining site and surrounding soil in the northern region of Xieqiao coal mine were tested, the material composition of coal gangue was analyzed via XRF and XRD, the modes of occurrence of U and Th elements were investigated, and their potential ecological risks and ecological effectiveness were evaluated. The results show that the clay minerals with high content in coal gangue are the key minerals for the adsorption of uranium and thorium in coal gangue. The specific activity of two radioactive elements (U and Th) in soil is much lower than that of coal gangue. With the increase of the distance from the soil collection point to the gangue piles and the depth of the soil profile, the specific activities of the two radioactive elements decrease gradually. On the basis of the concentration curve, the range of the radioactive contamination halo of gangue piles is limited (≤30 m), speculating qualitatively that the gangue dump has no significant influence on the radioactivity of the surrounding water. The modes of occurrence of U and Th in coal gangue and soil are altered. According to the index of geo-accumulation, Th is easier to accumulate in soil environment, but Th and U pollution in soil is not obvious. In contrast to U element, the active state of Th element in soil is generally affected by exogenous (coal gangue) export, which may have a potential environmental effects. This study provides a research idea for the investigation of radioactive element pollution to the surrounding soil in small-scale coal gangue plies.

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

Cited by 24 publications

References 10 publications

Trace elements in groundwater near an abandoned mine tailings dam and health risk assessment (NE Zimbabwe)

Trace elements in groundwater near an abandoned mine tailings dam and health risk assessment (NE Zimbabwe)

Spatial distribution and ecological risk assessment of heavy metals in manganese (Mn) contaminated site

Basic Characteristics of Coal Gangue in a Small-Scale Mining Site and Risk Assessment of Radioactive Elements for the Surrounding Soils

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