A critical review on the migration and transformation processes of heavy metal contamination in lead-zinc tailings of China

Chen, Tao; Wen, Xiaocui; Zhou, Jiawei; Lu, Zheng; Li, Xueying; Yan, Bo

doi:10.1016/j.envpol.2023.122667

Cited by 31 publications

(4 citation statements)

References 213 publications

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“…Therefore, the water environment of the Wenyu River in the study area presented the characteristics of a neutral-weak, acid-alkaline, and weak oxidation-reduction environment from upstream to downstream. The pH of the tailing water ranged from 6.12 to 6.38, with a small change because the tailings may contain molybdenite [9,28], which is composed of many metal sulfide minerals (such as pyrite, etc. ), and these minerals would increase the pH of the water after dissolving in the water.…”

Section: Mo and U Enrichment In Surface Watermentioning

confidence: 99%

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Zhang,

Wang,

Wang

et al. 2023

Minerals

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This work aims to understand the distribution and migration mechanisms of U and Mo between surface sediment and water in acid mine drainage (AMD) regions near a molybdenum mining region. A series of river sediment and water samples near the Jinduicheng mining area, one of the largest deposits of molybdenite ore in Asia, were collected and analyzed. Our results indicate that: (1) The pH value of river water samples increases with distance from upstream to downstream, while the pH has poor correlation with Mo and U; (2) The content of Mo and U in the sediment are significantly higher than the background value, which suggests potential pollution; (3) The content of Mo and U in the water and sediments in the lower reaches of the Wenyu river is significantly linearly related with the distance from the mining area, suggesting that AMD is a potential source; (4) BCR analysis shows that Mo in river sediments mainly existed as the residual, while U mainly existed as the non-residual; (5) The distribution coefficient Kd(Mo) exceeds Kd(U), indicating that Mo is enriched in sediments while U is more prone to porewater.

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Section: Mo and U Enrichment In Surface Watermentioning

confidence: 99%

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Zhang,

Wang,

Wang

et al. 2023

Minerals

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“…As a result, extensive research has been conducted for soils, vegetation, and water bodies in and around Pb-Zn tailings impoundments (Bao et al, 2018;Chen et al, 2022;Li et al, 2018;Yang and Chen, 2023;Yang et al, 2019;Zhang et al, 2018). However, HMs could also be adsorbed and/or co-precipitated by secondary minerals generated in tailings, which affects heavy metal migration and transformation Sikdar et al, 2020;Wang et al, 2022;Zhou et al, 2022;Bao et al, 2022;Chen et al, 2023). Heavy metals release and subsequent adsorption and/or precipitation in Pb-Zn tailings and watersheds are closely linked to sulfide weathering, acid generating, and neutralization, mainly dependent upon the Pb-Zn tailings mineralogy.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals mobilization and attenuation in Cd-rich Niujiaotang legacy Pb-Zn tailings of southwestern China

You,

Gu,

et al. 2024

Geochem. J.

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Lead-zinc tailings represent an important source of Cd and other heavy metals in the environment. The active geochemical process in the tailings plays a critical role in these heavy metals' fate and ecological risk. However, a substantial study gap occurs in carbonate-rich Pb-Zn tailings compared to carbonate-poor ones. In this contribution, we conducted XRD mineralogy, particle distribution, ICP-MS and ICP-AES bulk chemical analyses, and BCR geochemical fractions for Niujiaotang Cd-rich

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“…Human activities, such as transportation, agriculture and industry are common sources of external heavy metals in sediments and soils [2,5]. In the mining area, the exploration of nonferrous mines can release a great amount of heavy metals into the environment, and are the primary reason for heavy metal accumulation in sediment, seriously threatening human health and the sustainability of the mining industry [6][7][8]. For some sulfide deposits, acid mine drainage (AMD) often results from the oxidation of sulfide minerals, such as gelenite (PbS), sphalerite (ZnS) and pyrite (FeS 2 ), with the participation of water, oxygen and microorganisms [9,10].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Pollution in Sediments of the Yu River in a Polymetallic Ore Concentration Area: Temporal–Spatial Variation, Risk Assessment, and Sources Apportionment

Bai,

Liu,

Chen

et al. 2024

Sustainability

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In a polymetallic ore concentration area, large-scale mining activities can dramatically increase heavy metal concentrations in river sediments, and their temporal–spatial variation and source apportionment are significant for understanding heavy metal migration in rivers and formulating management strategies for environmental protection and the mining industry. Sediment samples were collected along the Yu River, which flows through the Luanchan polymetallic ore concentration area in China, during high-water period (HWP), low-water period (LWP) and flat-water period (FWP) to assess the pollution level and identify the sources of Mo, Cr, W, Cu, Zn, As, Cd, Pb and Hg in the sediments. The findings revealed that Mo, Cd, W, Zn, Pb and Cu were the main pollutants, and Hg was extremely high at some specific locations. Sediments in the upstream region of the Yu River were more severely polluted by heavy metals and had greater ecological risk due to stronger mine exploration. Furthermore, consistent distribution patterns of various heavy metals during different seasons were not found. Some sharp decreases in heavy metal concentrations between adjacent sediments were observed; moreover, at some sites, heavy metal concentrations during LWP and FWP were lower than those during HWP. The results indicated that heavy metals in the Yu River mainly migrated in dissolved form. Mo, Cu, Pb and As for HWP, Mo and As for LWP and Mo, Cr and W for FWP mainly originated from Mo/W mines. Pb/Zn mines contributed to the amounts of W, Zn and Cd during HWP, Cu, Zn, Cd and Pb during LWP and Cu, Zn, Cd and Pb during FWP. Hg was mainly attributed to Au mines, and Cr was the geogenic element. The results could contribute to the sustainability of the mining industry and the formulation of science-based remediation and protection strategies for the rivers near mining areas.

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A critical review on the migration and transformation processes of heavy metal contamination in lead-zinc tailings of China

Cited by 31 publications

References 213 publications

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Heavy metals mobilization and attenuation in Cd-rich Niujiaotang legacy Pb-Zn tailings of southwestern China

Heavy Metal Pollution in Sediments of the Yu River in a Polymetallic Ore Concentration Area: Temporal–Spatial Variation, Risk Assessment, and Sources Apportionment

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