Evaluation of the effectiveness of ex-situ stabilization for arsenic …
Stabilization is a widely practiced technology for the remediation and risk management of metalloids contaminated mining site soil in many countries worldwide (Feng et al., 2020).The retentions of As and Sb in soil systems can be improved by stabilization an appropriate material that makes their species less soluble (Hamon et al., 2002), thereby …
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Cement based solidification/stabilization of arsenic-contaminated mine
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), Korean standard leaching tests, toxicity …
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Stabilization of arsenic and antimony Co-contaminated soil …
Soils with relatively high concentrations of arsenic (As) and antimony (Sb) in mining areas would impose significant risks to human health and ecosystem. A new stabilizer …
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Assessment of compost and three biochars associated with …
DOI: 10.1016/S1002-0160(21)60025-5 Corpus ID: 237658347; Assessment of compost and three biochars associated with Ailanthus altissima (Miller) Swingle for lead and arsenic stabilization in a post-mining Technosol
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Developments in Arsenic Management in the Gold Industry
Mining operations can release arsenic to the environment through various mining-related activities, including drilling, blasting, transportation, comminution, roasting, smelting, …
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Assessment of effectiveness in stabilization/solidification of arsenic …
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 …
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A New Method for the Stabilization of Arsenic from …
"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 acceptable means of …
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Long-term stabilization of arsenic-alkali residues via …
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 ...
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Biogeochemical behavior and pollution control of arsenic in mining …
The simulated arsenic pollution model mining area needs to be constructed, which should cover geological background, human activities, soil properties, arsenic metabolizing microorganisms, …
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Characterization of the Stabilization of Arsenic in Mine …
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 ...
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Evaluation of solidification/stabilization in arsenic-contaminated
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.
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Assessment of effectiveness in stabilization/solidification of …
This study focused on evaluating the effectiveness of stabilizer/binding agents in immobilizing arsenic (As) in contaminated soil using both geochemical and geophysical …
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Pristine and Fe-functionalized biochar for the simultaneous
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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Experimental Study on Solidification/Stabilization of Arsenic
Unlike soils contaminated with divalent toxic cations, trivalent arsenic (As)-contaminated soils are difficult to treat. In this context, the present study aims to propose a ferrous sulfate (FeSO4) combined solid waste-based gelling material (MRS) method to solidify/stabilize As-contaminated soils. The interactions between FeSO4 and gelling material components …
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Simultaneous stabilization of particulate and bioavailable arsenic …
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.
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Simultaneous stabilization/solidification of arsenic in acidic
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.
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Efficient stabilization of arsenic in the arsenic-bearing lime …
The specific objectives were to 1) test the arsenic stabilization efficiency of the ZVI-enhanced method, 2) analyze mineral composition, micromorphology, and the arsenic speciation in ABLFS before and after the ZVI-enhanced hydrothermal treatment by using ICP-MS, XRD, FTIR, and TEM, 3) determine the effects of ZVI dosage, hydrothermal ...
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Full article: Stabilization and encapsulation of …
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, …
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Characterization of the Stabilization of Arsenic in Mine …
The influence of iron/arsenic molar ratio, pH, stabilization time, granularity, and temperature on the concentration of released arsenic was evaluated. Arsenic speciation before and after stabilization was characterized. When the iron/arsenic molar ratio was 1 and the pH was between 6.5 and 7.5 below 50°C using a stabilization time of 1 h, the ...
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Cement based solidification/stabilization of arsenic-contaminated mine
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), Korean standard leaching tests, toxicity …
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Arsenic: The Argument for Hydrometallurgical …
Stabilization at the Mine Site. David Dreisinger. Industrial Research Chair in Hydrometallurgy. ... • Why Arsenic? • Arsenic often occurs as an impurity in ores and concentrates. • Availability of "clean" ores and concentrates is declining – need to treat materials with high arsenic levels. • Copper concentrates widely traded ...
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Simultaneous stabilization of arsenic and antimony co …
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 ...
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STABILIZATION OF ARSENIC IN THE MINING AND …
Disposal of arsenic in the form of scorodite (FeAsO 4 ·2H 2 O) has been widely accepted as currently the most suitable method for stabilization and the safest known storage material.
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ARSENIC: Dundee Sustainable Technologies finishes stabilization …
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 Environmental Protection Agency …
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Stabilization mechanism of arsenic in mine waste using …
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 …
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Arsenic stabilization in mine tailings using nano-sized …
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 Byung-Tae ...
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Cement based solidification/stabilization of arsenic-contaminated mine
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 …
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(PDF) Stabilization of arsenic in the mining and …
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...
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Simultaneous stabilization of arsenic and antimony co …
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 …
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Arsenic stabilization in mine tailings using nano-sized magnetite …
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).
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