Leaching characteristics of bromine in coal

Peng, Bingxian; Wu, Daishe

doi:10.1016/s1872-5813(11)60040-6

Cited by 8 publications

(10 citation statements)

References 7 publications

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“…This result is consistent with the results of other literatures [52,57,58,60]. For example, column leaching experiments were performed on the samples of feed coal, fly ash, and bottom ashes from the Shizuishan coal-fired power plant to investigate the leaching behavior of the 11 potentially hazardous elements and the results show that the leaching behavior of the elements from the solid samples is mainly influenced by leaching time and pH value of solution [57].…”

Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Csupporting

confidence: 90%

“…Also, different acid solutions were used to investigate the leaching behavior of bromine in coal and the results show that leaching time and pH value played an important role in controlling the leaching behavior of bromine in coal [58]. Overall, the leaching behavior of the trace elements was mainly affected by the pH values of the leaching solutions [57][58][59][60]. However, the pH values of the leaching solution showed a weak effect on the leaching behavior of the trace elements in this study.…”

Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Cmentioning

confidence: 63%

“…Generally, the pH of the leaching solutions plays an important role on the leaching behavior of trace elements from coal gangue [56]. Also, leaching time is another important impact factor on the leaching behavior of trace elements from coal gangue [57][58][59]. Meanwhile, the concentration of the trace elements in coal gangue can influence the leaching behavior [37].…”

Section: Leaching Methodsmentioning

confidence: 99%

“…For example, column leaching experiments were performed on the samples of feed coal, fly ash, and bottom ashes from the Shizuishan coal-fired power plant to investigate the leaching behavior of the 11 potentially hazardous elements and the results show that the leaching behavior of the elements from the solid samples is mainly influenced by leaching time and pH value of solution [57]. Also, different acid solutions were used to investigate the leaching behavior of bromine in coal and the results show that leaching time and pH value played an important role in controlling the leaching behavior of bromine in coal [58]. Overall, the leaching behavior of the trace elements was mainly affected by the pH values of the leaching solutions [57][58][59][60].…”

Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Cmentioning

confidence: 99%

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Trace Elements in Coal Gangue: A Review

Guo¹

2018

Contributions to Mineralization

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Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal gangue utilization is a matter of great concern and has attracted wide interest. However, some toxic trace elements in coal gangue should be paid more attention during the utilization of coal gangue. In this article, the modes of occurrence and the leaching characters of trace elements in coal gangue were introduced according to the result of the sequential extraction method and the leaching method. The release character of trace elements during combustion of coal gangue and the environmental implication of trace elements in coal gangue were also discussed. The sulfide-bound trace elements are dominant form in coal gangue. Leaching behavior of trace elements from coal gangue is affected by many factors. Different trace elements presented different transformation behaviors. Trace elements in coal gangue could release out and produce environmental implication in various degrees, depending on the type of trace elements.

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Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Csupporting

confidence: 90%

Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Cmentioning

confidence: 63%

Section: Leaching Methodsmentioning

confidence: 99%

Section: Leaching Behavior Of Trace Elements From Coal Gangue Under Cmentioning

confidence: 99%

See 2 more Smart Citations

Trace Elements in Coal Gangue: A Review

Guo¹

2018

Contributions to Mineralization

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“…19, slightly alkaline, with no acid rain. The concentration ratio between SO4 2− and NO3 − in the rainfall is approximately 2.3-29.0, suggesting sulfate precipitation [19,31]. According to the rainfall characteristics, distilled water (pH = 7.0 ± 0.3), acidic solution (pH = 6.0 ± 0.3, using distilled water with H2SO4) and alkaline solution (pH = 8.0 ± 0.3, using distilled water with NaOH) were prepared for the leaching experimental groups.…”

Section: Leaching Experimentsmentioning

confidence: 96%

Leaching Behavior and Potential Environmental Effects of Trace Elements in Coal Gangue of an Open-Cast Coal Mine Area, Inner Mongolia, China

et al. 2016

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Abstract:In order to better understand the role of coal gangue in potential environmental and ecological risks, the leaching behavior of trace elements from coal gangue has been investigated in an open-cast coal mine, Inner Mongolia, China. Four comparative column leaching experiments were conducted to investigate the impacts of leaching time, pH values and sample amount on the leaching behavior of trace elements. Enrichment factors (EF), maximum leached amount (L am ), maximum leachability (L rm ), effects range low (ERL) and effects range median (ERM) were employed to evaluate potential environmental and ecological hazards resulting from the leaching behavior of environment-sensitive trace elements from coal gangue. Leaching time and sample amount display important effects on trace element concentrations, leached amounts and leachability. The pH values exhibit a weak influence on the leaching behavior of the selected trace elements (e.g., As, V, Cr, Co, Ni, Cu, Zn, Se, Cd, Sn, Pb and Hg). The coal gangue are enriched in As, Co, Se and Pb and, in particular, show higher environmental pollution levels of As and Se (EF > 2). L am values suggest that all of the elements investigated do not show potential risk to soils and vegetation, but have a high hazard risk for ground water. Elements including Ni, As, Cr and Zn are inclined to show high or moderate biological toxicity.

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Release behavior of iodine during leaching and calcination of phosphate rock

Peng

Xiang

et al. 2021

Environ Sci Pollut Res

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Leaching characteristics of bromine in coal

Cited by 8 publications

References 7 publications

Trace Elements in Coal Gangue: A Review

Trace Elements in Coal Gangue: A Review

Leaching Behavior and Potential Environmental Effects of Trace Elements in Coal Gangue of an Open-Cast Coal Mine Area, Inner Mongolia, China

Release behavior of iodine during leaching and calcination of phosphate rock

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