Static and Dynamic Leaching of Chromium(VI) from Chromium-Containing Slag

Li, Hangbin; Wang, Zhenxing; Yang, Zhihui; Chai, Liyuan; Liao, Yingpin

doi:10.1089/ees.2010.0313

Cited by 18 publications

(15 citation statements)

References 11 publications

(8 reference statements)

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“…3(a-d) shows the XRD results of smelting slag samples leached through P4.0, P5.0, P6.0, and slag. On the axis of 2-Theta, the quartz diffraction peak appears at 21.9° and the calcite diffraction peak appears at 36.1°, which meets the study of relevant scholars [5]. The diffraction spectrums of the three samples are basically the same before and after leaching, but after leaching, the diffraction peak intensity of quartz and calcite significantly weakens.…”

Section: Content and Occurrence State Of Metal(loid)s In Sb Smelting supporting

confidence: 67%

“…Moreover, as can be seen from Fig. 5a), Sb concentration and pH value in simulated rain leaching are inversely proportional, and this may be due to Sb's double characteristics: Sb in the smelting slag turned into SbO 3 -1 during the leaching process and then turned into deposit Sb(OH) 5 , which under higher pH value formed soluble Sb (OH) 6 -1 [40]. After 12 days of leaching, Sb concentrations of the three samples were 19.687 mg·L .…”

Section: Content and Occurrence State Of Metal(loid)s In Sb Smelting mentioning

confidence: 89%

“…However, the fact is that solid waste is not completely soaked by water in most cases. Therefore, this study adopts a dry-wet alternate semi- dynamic leaching experiment [5] to study the precipitation of such metal(loid)s as Sb, As, and Hg in Sb smelting slag.…”

Section: Semi-dynamic Leaching Experiments Of Sb Smelting Slag and Cormentioning

confidence: 99%

“…The smelting slag produced by the smelting mines is not only land-occupying, but also causes lasting environmental pollution, for large amounts of harmful elements in the smelting slag are released after rain [4][5][6][7]. As the world's largest antimony (Sb) producer, China produces on average 80% of global Sb annually [8].…”

mentioning

confidence: 99%

“…Release law of Sb, As... dynamic leaching experiment [5] to study the precipitation of such metal(loid)s as Sb, As, and Hg in Sb smelting slag.…”

mentioning

confidence: 99%

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Release Law of Sb, As, and Hg in Antimony Smelting Slag Under Simulated Acid Rain

Zhou¹,

Li²,

Ren³

et al. 2017

Pol. J. Environ. Stud.

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The exploitation and smelting of heavy metals causes serious environmental pollution, which has received extensive attention from researchers all over the world [1][2][3]. The smelting slag produced by the smelting mines is not only land-occupying, but also causes lasting environmental pollution, for large amounts of harmful elements in the smelting slag are released after rain [4][5][6][7]. As the world's largest antimony (Sb) producer, China produces on average 80% of global Sb annually [8].Xikuangshan (XKS) in Hunan, the world's largest Sb mine, is reported to produce 25% of the world's total. The XKS mine has been mining and smelting for almost 120 years. Its longtime and large-scale mining and smelting has produced large amounts of smelting slag. With surface runoff and precipitation infiltration, harmful elements like Sb and the associated elements As and Hg have been released, threatening the environment and human beings [10][11][12][13][14]. When an excessive amount of Sb, As, or Hg enters the human body, it will cause diseases to the liver, skin, tumors, respiratory and cardiovascular systems, and even cancer [15][16][17][18][19]. Sb, As, Hg, and their compounds are listed as pollutants of priority interest by the United States Pol. J. Environ. Stud. Vol. 26, No. 2 (2017), 925-933 Original Research AbstractThis study takes the Southern antimony smelting slag depot in Xikuangshan (XKS) Sb mine in the city of Lengshuijiang, Hunan, China, as the research object and explores the release law of Sb, As, and Hg in smelting slag under different pH-value simulated acid rain by a semi-dynamic leaching experiment of simulating the local rain. The results show that the leachate pH value is positively correlated with the pH value of simulated acid rain, while the leachate conductivity is negatively correlated with it. The leaching rates of As and Hg are negatively correlated with the pH value of the simulated acid rain, while the leaching rate of Sb is positively correlated with it; in the leaching process, the leachate pH value goes downward slowly after shooting up, but the leachate conductivity is continuously reduced; the releasing process of Sb, As, and Hg consists of two stages, and their leaching rate forms such an order as Sb > Hg > As. The diffraction peak intensity of the main mineral composition of quartz and calcite decreases significantly after leaching; the smelting slag's surface becomes less rough than before leaching, with fewer pores and edges, and the contents of S, Si, Al, Fe, Ca, and Sb on the slag surface decrease while the content of O, As, and Hg increases.Keywords: antimony smelting slag, simulated rain, metal(loid)s, release law *e-mail: zsjaw0745@sina.com DOI: 10.15244/pjoes/65470 926 Zhou S., et al. Environmental Protection Agency [20] and the European Union [21].Until the present, studies at home and abroad are mainly on minerals' adsorption of Sb (III and V) and its desorption, as well as Sb smelting slag's impact on the surrounding environment [22][23][24][25][26][27], but f...

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Section: Content and Occurrence State Of Metal(loid)s In Sb Smelting supporting

confidence: 67%

Section: Content and Occurrence State Of Metal(loid)s In Sb Smelting mentioning

confidence: 89%

Section: Semi-dynamic Leaching Experiments Of Sb Smelting Slag and Cormentioning

confidence: 99%

mentioning

confidence: 99%

“…Release law of Sb, As... dynamic leaching experiment [5] to study the precipitation of such metal(loid)s as Sb, As, and Hg in Sb smelting slag.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Release Law of Sb, As, and Hg in Antimony Smelting Slag Under Simulated Acid Rain

Zhou¹,

Li²,

Ren³

et al. 2017

Pol. J. Environ. Stud.

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Pilot Trial of Detoxification of Chromium Slag in Cyclone Furnace and Preparation of Glass-Ceramics with the Water-Quenched Melt

Zhao

Zhang

Cang

2018

The Minerals, Metals &Amp; Materials Series

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Contamination Characteristics of Soils and Biological and Chemical Behavior of Chromium in Soil

Yang,

Chai,

Yang

et al. 2023

Environmental Science and Engineering

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Static and Dynamic Leaching of Chromium(VI) from Chromium-Containing Slag

Cited by 18 publications

References 11 publications

Release Law of Sb, As, and Hg in Antimony Smelting Slag Under Simulated Acid Rain

Release Law of Sb, As, and Hg in Antimony Smelting Slag Under Simulated Acid Rain

Pilot Trial of Detoxification of Chromium Slag in Cyclone Furnace and Preparation of Glass-Ceramics with the Water-Quenched Melt

Contamination Characteristics of Soils and Biological and Chemical Behavior of Chromium in Soil

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