Arsenic Stabilization Mining

Kim, K.R., Lee, B.-T. and Kim, K.-W. (2012) Arsenic stabilization in mine tailings using nano-sized magnetite and zero valent iron with the enhancement of mobility by surface coating. Journal of Geochemical Exploration, 113, 124 – 129.CrossRef Google Scholar

This study focused on evaluating the effectiveness of stabilizer/binding agents in immobilizing arsenic (As) in contaminated soil using both geochemical and geophysical monitoring methods. The effluent from the stabilizer/binding agent's application and control columns was analyzed, and the status of the columns was monitored using electrical resistivity …

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 and copper …

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, citric and ...

This review addresses the geochemical behavior of these two metalloids in mining environments and presents an overview of the main strategies used to stabilize or encapsulate As- or Sb-bearing mine waste, …

Fenton sludge (FS) with high iron contents that discharged from the Fenton process was rarely studied for soil remediation. Herein, a novel Fe(Ⅱ) activated-Fenton sludge (FS–FeSO 4) was proposed to stabilize arsenic (As) and antimony (Sb) co-contaminated soil meanwhile disposing FS.Multiple characteristic analyses revealed that the porous structures …

One-pot synthesis of nZVI-embedded biochar for remediation of two mining arsenic-contaminated soils: arsenic immobilization associated with iron transformation. J. Hazard. Mater., 398 ... Stabilization of arsenic and antimony Co-contaminated soil with an iron-based stabilizer: assessment of strength, leaching and hydraulic properties and ...

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 decreasing trends of …

The company has been developing a series of research and processes (see Table 1) in its laboratory and pilot plant to achieve two objectives:. To satisfy Codelco's needs with new processes for arsenic treatment and stabilization, including different qualities of waste, state of art technologies, stable disposal, and technical, economic, and environmental performance.

Arsenic is primarily associated with crystalline and amorphous iron oxides, and some iron amendments show greater potential for in situ stabilization (Miretzky and Cirelli, 2010). For example, Fe(0) has long-lasting effects in As stabilization ( Lombi et al., 2002, …

Arsenic is one of the most ubiquitous carcinogenic elements. Arsenic is often found in contaminated soils as a result of natural activities, such as weathering and volcanic activity, or artificial sources, such as mining, landfill leachate, wastewater, and agriculture (Banuelos and Ajwa, 1999, Bhumbla and Keefer, 1994).

The EcoMetales Contribution to the Stabilization of Arsenic Contained in Mining Residues 277 Table 1 Summary of research and processes developed by ECL in recent years Project. Development/Product Leaching of flue dust and arsenic (As) disposal as scorodite in industrial site ; 1 Scorodite 2.0: Volume reduction and encapsulation of the ...

Arsenic (As) is a known carcinogen and is one of the most commonly reported contaminants in farmland soils around mining sites. This study aimed to investigate four different soil amendments (rice husk biochar (RHB), maple leaf biochar (MLB), red mud (R.M), and steel slag (S.S)) with respect to the stabilization of arsenic in soil combined with revegetation of two …

The stabilization efficiencies of arsenic (As) in contaminated soil were evaluated using various additives such as limestone, steel mill slag, granular ferric hydroxide (GFH), and mine sludge collected from an acid mine drainage treatment system. The soil samples were collected from the Chungyang ar …

Mine tailings containing substantial quantities of heavy metals are by-products of mineral processing and are generally disposed in open-air tailings ponds without any treatment, which can result in severe, sometimes catastrophic, consequences in the absence of proper management (Adiansyah et al., 2015; Lindsay et al., 2015).

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.

Phosphate has been proven to be effective in remediating soils contaminated with potentially toxic elements (PTEs); however, the potential release of phosphorus (P) through runoff and the impact on PTEs' transport in this process have never been assessed. A rainfall simulation study was conducted to investigate P runoff loss and its impact on the stability of arsenic (As) …

(R.M), and steel slag (S.S)) with respect to the stabilization of arsenic in soil combined with revegetation of two hyperaccumulators (Asteraceae (lettuce) and Brassicaceae (mustard green)). Soil amendments at different application rates (0.5%, 1%, and 2% w/w) ... Reclamation of arsenic contaminated soils around mining site 387

A cost-effective and environmentally viable arsenic stabilization process, which is based on controlled ambient scorodite precipitation [1,2,3,4],was developed for commercial application. The details on the execution of the arsenic stabilization program and the developed Zijin arsenic stabilization process have been reported previously [5, 6 ...

Massive realgar tailings abandoned in mining areas in China have caused serious arsenic (As) pollution seeking for urgent disposal. Stabilization treatment is a feasible strategy, however, stabilization technologies for realgar tailings, that are Fe-deficient, Ca-rich and S-rich, have not been well developed to date.

Polyacrylamide, nano-SiO 2, and ferrihydrite composites can stabilize arsenic in realgar mine area soils. The materials improve the mechanical properties of the soil 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 a long time and is …

Prolonged As mining and smelting have resulted in pervasive pollution of surface water, soil, and groundwater, with arsenic levels in the Shimen realgar mine vicinity reaching up to 475–5240 mg·kg −1 in soil and 0.67–40.10 mg·L −1 in riverine water (Tang et al., 2016; Zhu et al., 2015). The pervasive arsenic (As) contamination in the ...

Solidification/stabilization (S/S) represents one of the most effective methods to reduce the availability of arsenic in soil and waste by transforming toxic or potentially …

The stabilization efficiencies of arsenic (As) in contaminated soil were evaluated using various additives such as limestone, steel mill slag, granular ferric hydroxide (GFH), and mine sludge collected from an acid mine drainage treatment system. The soil samples were collected from the Chungyang area, where abandoned Au–Ag mines are located. Toxicity …

Cement was used to solidify/stabilize the abandoned mine tailings contaminated primarily with arsenic (up to 88mg/kg) and lead (up to 35mg/kg). Solidified/stabilized (s/s) forms with a range of cement contents, 5-30wt%, were evaluated to determine the optimal binder content. Unconfined compression s …

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 stabilizing …

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 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).

Long-term stabilization of arsenic-alkali residues via adjusting As redistribution and mineralogical transformation. Author links open overlay panel Fengjiao Zhang a, Yao Shi a, Zezhou Zhao a, ... The released As from mine wastes and contaminated soils could be effectively encapsulated by Ca − Fe arsenates, which readily forms with highly ...