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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 …
(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
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 ...
Simultaneous stabilization of arsenic and antimony co-contaminated mining soil by Fe(Ⅱ) activated-Fenton sludge: Behavior and mechanisms. Environ. Pollut., 337 …
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 …
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 …
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 …
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% ...
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 ...
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.
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.
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
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.
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 simulated arsenic pollution model mining area needs to be constructed, which should cover geological background, human activities, soil properties, arsenic …
Stabilization of arsenic and antimony Co-contaminated soil with an iron-based stabilizer: Assessment of strength, leaching and hydraulic properties and …
Assessment of compost and three biochars associated with Ailanthus altissima (Miller) Swingle for lead and arsenic stabilization in a post-mining Technosol. Author links open overlay panel Ibrahim ALIDOU-ARZIKA a b, Manhattan LEBRUN a c, Florie MIARD a, Romain NANDILLON a, Gülriz BAYÇU b, Sylvain BOURGERIE a, …
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 …
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 …
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.
Arsenic and antimony are metalloids that exhibit similar geochemical behavior and are often found in the same mineral associations, co-occurring in mine waste derived from ore exploitation. Due to their adverse effects on ecosystems and human health, techniques to limit their release into the environment from mine wastes and the …
1. Introduction. Arsenic occurs in over 300 minerals (Drahota and Filippi, 2009), with arsenopyrite (FeAsS) being the major As mineral found most frequently (Alloway, 1995; Corkhill and Vaughan, 2009).Arsenopyrite is present in a large diversity of ore deposits (hydrothermal, magmatic and porphyry-style) (Corkhill and Vaughan, …
Arsenic is highly toxic, carcinogenic, and it exists widely as various forms in the earth's crust with more than 300 arsenic minerals being investigated [1, 2].Arsenic is often associated with heavy metal minerals and precious metals minerals, and exploiting and enriching with the process of mining and metallurgy [3,4,5] as observed in process …
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 ...
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 …
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.
Ex-situ stabilization for As and Sb co-contaminated soil was conducted through an iron-based stabilizer, PFSC (a mixture of polymerized ferric sulfate (PFS) and hydrated lime (Ca(OH 2)) with a dry mass ratio of 2:1).After field aging for one week, the stabilized contaminated soil was subjected to a horizontal vibration leaching test (HJ …
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...
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. ... Simultaneous stabilization of particulate and bioavailable arsenic in soils from the realgar mining …
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 ...