Releasing Characteristics and Biological Toxicity of the Heavy Metals from Waste of Mercury-Thalliummine in Southwest Guizhou of China

Wen, Jichang; Wu, Yali; Lu, Qian; Li, Xinlong; Yang, Lin; Duan, Zhibin

doi:10.1007/s00128-021-03117-7

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…The mineral compositions of the waste slag include quartz, kaolinite, wollastonite, potassium feldspar, and magnetite. The contents of Tl, Hg, As and Sb in the Hg-Tl mining waste slag were 209.63, 46.22, 85.75, and 9.01 mg/kg, respectively (Wen et al, 2021b). Sulphur content in the Hg-Tl mining waste slag was about 0.6%.…”

Section: Waste Slag Sample and Dom Preparationmentioning

confidence: 90%

“…The F Max values of component C1 and component C2 in the higher DOM content treatments were greater than those in the lower DOM content treatments. This result indicated that the uorescence intensity is mainly related to the concentration of DOM(Wen et al, 2021b). The F Max values of components C1 and C2 generally rst increased and then decreased with increasing incubation time.…”

mentioning

confidence: 82%

“…The Hg content in the leachate of DOM treatments was lower than that of CK treatments; additionally, the higher the DOM concentration was, the lower the Hg content in leachate. The Tl content in the leachate of the CK and 5% DOM treatments signi cantly increased at 0-10 d and increase slowly in the later period of 10-40 d. The Tl content in the leachate of the DOM treatments was lower than that of the CK treatments; additionally, the higher the DOM concentration was, the lower the Tl content in the leachate Wen et al (2021b). suggested that Hg and Tl were dissolved from Hg-Tl mining waste slag without the addition of DOM released into the aqueous phase under the low pH and high Eh conditions.…”

mentioning

confidence: 86%

“…suggested that the minerals in Hg-Tl mining waste slag are mainly TlAsS 2 , TlHgAsS 3 , TlFeS 2 , etc. These minerals in Hg-Tl mining waste slag are easily subjected to natural weathering and leaching and result in As release(Wen et al, 2021b), but the As released may be attenuated by secondary weathering products of the waste slag (e.g., iron oxyhydroxides)(Elghali et al, 2021;Murciego et al, 2011). Compared to the CK treatment, the addition of DOM signi cantly increased the As released from Hg-Tl mining waste slag, and the higher the DOM concentration was, the more As was released.…”

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confidence: 99%

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Effects of dissolved organic matter derived from cow manure on heavy metal(loid)s and bacterial community dynamics in mercury-thallium mining waste slag

Luo

Wei

et al. 2023

Environ Geochem Health

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Organic amendments in aided phytostabilization of waste slag contain high levels of heavy metal (loid)s (HMs) is an important way to in situ control the release of HMs. However, the effects of dissolved organic matter (DOM) derived from organic amendments on HMs and microbial community dynamics in waste slag are still unclear. The results showed that the mercury (Hg)-thallium (Tl) mining waste slag without the addition of DOM continuously decreased pH and increased EC, Eh, SO 4 2− , Hg, and Tl in the leachate with increasing incubation time. The addition of DOM signi cantly increased pH, EC, SO 4 2− , and arsenic (As) but decreased Eh, Hg, and Tl. The addition of DOM signi cantly increased the diversity and richness of the bacterial community. The dominant bacterial phyla (Proteobacteria, Firmicutes, Acidobacteriota, Actinobacteriota, and Bacteroidota) and genera (Bacillus, Acinetobacter, Delftia, Sphingomonas, and Enterobacter) were changed in associated with increases in DOM content and incubation time. The DOM components in leachate were humic-like substances (C1 and C2), and the DOM content and maximum uorescence intensity (F Max ) values of components C1 and C2 in the leachate decreased and rst increased and then decreased with increasing incubation time. The correlations between HMs and DOM and the bacterial community showed that the geochemical behaviours of HMs in Hg-Tl mining waste slag were directly in uenced by DOM properties and indirectly in uenced by DOM regulation of bacterial community changes. Overall, these results indicated that DOM properties associated with bacterial community changes increased As but decreased Hg and Tl mobilization from Hg-Tl mining waste slag.

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Section: Waste Slag Sample and Dom Preparationmentioning

confidence: 90%

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confidence: 82%

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confidence: 86%

mentioning

confidence: 99%

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