The arsenic immobilization efficiency and mobility of SDS-nMGT proved that it is an outstanding material for arsenic stabilization in mine tailings. In addition, SDS-nMGT can be applied to remediate arsenic in aquatic systems after passing through soil above the groundwater. Furthermore, this technology also has a potential application for …
A new tailings management technique, called cemented paste backfill (CPB), has become widely employed for improving mining techniques and for tailing storage purpose and this technique...
The prolonged duration of phytoremediation poses a risk of heavy metal dispersal to the surrounding environment. This study investigated a combined remediation approach for cadmium (Cd)- and arsenic (As)-contaminated soil by integrating phytoremediation with stabilization techniques. Bidens pilosa was utilized as the …
Download Citation | On Sep 1, 2023, Yuliang Zhang and others published Simultaneous stabilization of arsenic and antimony co-contaminated mining soil by Fe(Ⅱ) activated-Fenton sludge: Behavior ...
The stabilization efficiencies of arsenic in contaminated soil were evaluated using various additives such as limestone, steel mill slag, granular ferric hydroxide, and mine sludge collected from an acid mine drainage treatment system, and it was suggested that GFH andMine sludge may play a significant role on the arsenic stabilization. Expand
Cement was used to solidify/stabilize the abandoned mine tailings contaminated primarily with arsenic (up to 88. mg/kg) and lead (up to 35 mg/kg).. Solidified/stabilized (s/s) forms with a range of cement contents, 5–30 wt%, were evaluated to determine the optimal binder content.Unconfined compression strength test (UCS), …
1. Introduction. Realgar (As 4 S 4) is an arsenic-sulphur compound that has an As content of 70%, and is generated under reducing conditions.It is commonly found in low-temperature hydrothermal veins, hot-spring deposits and volcanic residues and is often associated with gold-, silver- or lead-bearing ores (Bullen et al., 2003).High-grade …
Ferrous chloride has been evaluated as a novel approach to stabilize arsenic in mine tailings. The influence of the iron/arsenic molar ratio, pH, stabilization time, granularity, and temperature ...
The constituents of metallurgical slagbased binders (ground granulated blast furnace slag, steel slag powder, and flue gas desulfurization gypsum) were evaluated at different proportions (10-80% ...
Cement was used to solidify/stabilize the abandoned mine tailings contaminated primarily with arsenic (up to 88 mg/kg) and lead (up to 35 mg/kg). Solidified/stabilized (s/s) forms with a range of cement contents, 5–30 wt%, were evaluated to determine the optimal binder content.Unconfined compression strength test (UCS), …
To evaluate the stabilization of available As in contaminated tailings from two abandoned metal mines of South Korea (the Myoungbong and Daduck Mines, 6670 and 56 600 mg/kg total As, respectively), characteristics of the tailings were investigated, and the tailings were treated through precipitation of amorphous iron compounds. Steep …
This review addresses the geochemical behavior of these two metalloids in mining environments and presents an overview of the …
Simultaneous stabilization of arsenic and antimony co-contaminated mining soil by Fe ... Moreover, the Sb content in agricultural soil around Sb mining areas in Guizhou is much higher than the background value. The WHO, USEPA, and EU have identified As and Sb as the priority and emerging contaminants(Guo et al., 2014; Herath …
Arsenic, which is a toxic and carcinogenic element, causes serious environmental problems throughout the world. It is also known as a major contaminant in the non-ferrous mining and extractive ...
Arsenic (As) is the 53rd most abundant element and constitutes about 1.5 ppm of the Earth's crust. Arsenic naturally occurs in the environment through weathering and volcanism in the form of many diverse minerals, usually in combination with sulfur and metals, as well as a pure elemental crystal.
Arsenic stabilization in mine tailings using nano-sized magnetite and zero valent iron with the enhancement of mobility by surface coating @article{Kim2012ArsenicSI, title={Arsenic stabilization in mine tailings using nano-sized magnetite and zero valent iron with the enhancement of mobility by surface coating}, author={Ki-Rak Kim and …
The mechanisms at different pH for the stabilization of arsenic (As) in mine tailings (MTs) using steelmaking slag were investigated using laboratory experiments. Two types of steelmaking slag were used in the experiments. Ca-slag has high pH and high calcium oxide content due to its short period of aging. In contrast, Fe-slag is oxidized for …
Stabilization of arsenic and antimony Co-contaminated soil with an iron-based stabilizer: Assessment of strength, leaching and hydraulic properties and …
Simultaneous stabilization of arsenic and antimony co-contaminated mining soil by Fe(Ⅱ) activated-Fenton sludge: Behavior and mechanisms. Environ. Pollut., 337 …
arsenic content in drinking water has caused public health problems, including India, Bangladesh, Mongolia, Argentina, Chile, China, and the United States of America (Kim et al., 2012).
"As conventional, base or precious metal ores are being depleted worldwide, the mining industry is being faced with an increasing exploitation of arsenical sulfidic ores. Enargite is a common example. The downstream processing of these ores poses several problems ranging from high smelter penalties to finding economical and environmentally …
There is a possibility that arsenic could be immobilized through gel formation during the hydration and geopolymerization process, thanks to the high surface area and absorption properties.
The first step to arsenic removal in the mining and metallurgy industry is arsenic oxidation. The weak acid bleed streams obtained from acid plants, smelters …
The release of arsenic from weathered arsenopyrite mine wastes represents a grave environmental issue, especially when dealing with former mining …
The stabilization efficiencies of arsenic in contaminated soil were evaluated using various additives such as limestone, steel mill slag, granular ferric hydroxide, and mine sludge collected from an acid mine drainage treatment system, and it was suggested that GFH andMine sludge may play a significant role on the arsenic stabilization. Expand
Performance As stabilization or removal Reference; Arsenic stabilization. Arsenopyrite mine wastes. Combination of calcite and ferric sulfate. Or Byproducts generated from the processing of aluminum salt slags. 95–98% stabilization Or 52–79% stabilization. Álvarez-Ayuso and Murciego (2021). Soil washing. Soil-borne As: Oxalic, …
Arsenic (As) contamination in realgar mining areas poses a severe environmental and health risk, highlighting the critical need for effective strategies to manage As migration, particularly in its particulate and bioavailable states. Soil erosion and water leaching serve as significant pathways for spreading As, emphasizing the imperative to curtail its mobility.
QUEBEC – Dundee Sustainable Technologies (DST) of Montreal has cast the first piece of arsenical glass as part of commissioning its new arsenic stabilization pilot plant. The casting was done using DST's proprietary technology from a stabilization trial run in December 2015. The glass that was produced was submitted to the US …
Arsenic stabilization mechanism in a mine waste was investigated using a basic oxygen furnace (BOF) slag. A lab-scale batch test was carried out to stabilize As in the mine waste samples for 1 h, where various amounts of the BOF slag and distilled water were introduced. Different stabilization efficiencies were observed depending on the …
Pristine and Fe-functionalized biochar for the simultaneous immobilization of arsenic and antimony in a contaminated mining soil. Author links open overlay panel Jiayi Li a b 1, Yurong Gao c 1, Caibin Li d 1, ... Collectively, the above results underscore the substantial contribution of FBC in influencing the stabilization dynamics of both As ...
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