This study investigated the selective removal of arsenic from high arsenic dust in alkaline systems and the effects of different leaching conditions The results indicated that the liquid solid ratio NaOH concentration and sulfur dosage had a significant influence on the process The leaching efficiency of arsenic reached % while that of lead was as low as
Overall FBC not only features a simple and low cost synthesis process but also exhibits good immobilization capacity for As and Sb making it suitable for remediating As Sb co contaminated soils in mining regions A comparison of the removal efficiency of As/Sb by FBC and other Fe functionalized biochar in soil systems is presented in Table S4
The mining process is responsible for massive waste displacement to the environment in different ways Fine particles with high airborne transport and floating capacity for example have a high capacity to contaminate the air of the mining region in addition to being able to be disseminated through the air over large distances creating a vast spectrum of
Some of the transfer processes are dissipative and usually referred as emissions emissions of arsenic to the atmosphere from metal smelting and some others are not dissipative the arsenic mining process is simply transferring the arsenic from one place to another Chen et al 2010 Kapur and Graedel 2006 Lifset et al 2012
Arsenic cadmium lead zinc and mercury are among the toxic elements released into soil water and air during mining and mineral processing As shown in Fig 1 these heavy metals pose severe threats to human health and ecosystems Q [3]
Some of the transfer processes are dissipative and usually referred as emissions emissions of arsenic to the atmosphere from metal smelting and some others are not dissipative the arsenic mining process is simply transferring the arsenic from one place to another Chen et al 2010 Kapur and Graedel 2006 Lifset et al 2012
Acid mine drainage AMD or acid rock drainage ARD the most notorious environmental problem in many mines and underground construction sites is generally managed using lime neutralization This approach is effective but unsustainable in the long term so we introduced the two step neutralization ferrite formation process in our previous works as an
The case of the Giant mine illustrates how a large long lived Au mine has resulted in a complex regional legacy of As contamination and an estimated remediation cost of almost one billion Canadian dollars AANDC 2012 The mine located a few km north of the city of Yellowknife on the shore of Great Slave Lake Figs 1 2 produced more than 7 million troy ounces of Au
Arsenic recognized as a carcinogenic element commonly coexists with non ferrous metals within the Earth s crust in mineral forms Wang et al 2021 The mining and smelting activities of non ferrous metal ores release arsenic from these minerals not only discharging a significant amount of arsenic containing acidic mine drainage AMD through the
Mining operations have the potential to cause extensive environmental destruction in a variety of ways Pollution may arise from mining activity itself or poor quality of underground wastewater extracted as part of the mining process [1] Mining wastewater is characterized by high acidity high concentration of sulphate chloride and dissolved metal ions
Arsenic content in copper concentrates is continuously increasing worldwide It is desirable to remove arsenic from copper in the earlier stages of copper making due to the deposition of arsenic to cathode copper during the electrorefining process Effects of temperature flux and oxygen on the distribution of arsenic during copper converting and fire refining
Arsenic is one of the most hazardous pollutants for both environment and human health [1 2] generated from the mining activity for processing of different ores such as lead zinc copper gold and nickel [3 4 5] Therefore arsenic should be captured and stabilized by strict control to prevent any destructive effects in the environment [6 7] As a result of the global
The removal of arsenic from acidic aqueous conditions is usually achieved in mineral processing and metallurgical operations using lime This strategy used by some mining companies for arsenic removal focuses on the formation of As 5 a less toxic chemical species providing improved environmental outcomes compared with As 3
Arsenic content in copper concentrates is continuously increasing worldwide It is desirable to remove arsenic from copper in the earlier stages of copper making due to the deposition of arsenic to cathode copper during the electrorefining process Effects of temperature flux and oxygen on the distribution of arsenic during copper converting and fire refining
A lot of anthropogenic activities can discharge arsenic into the ecosystem such as industrial wastes incineration of municipal pesticide production and wood preserving In addition most arsenic soluble species can enter surface waters via runoff and leach into the groundwater Around forty million people from all over the world are affected by arsenic through
Arsenic is a highly toxic metalloid widespread in the Earth s crust and its contamination due to different anthropogenic activities application of agrochemicals mining waste management represents an emerging environmental issue Therefore different sustainable and effective remediation methods and approaches are needed to prevent and protect humans
Arsenic forms a complex with pyrite FeS 2 for which it has a high affinity and it is a potential process of arsenic remediation Saunders et al 2018; Nordstrom 2002 This metalloid find its way into the environment through several human anthropogenic and agricultural activities such as; mining metal smelting burning of fossil fuels and
Due to the high acidic arsenic containing wastewater pollution greatly threatening human health and ecological safety a simple and efficient method for reducing arsenic was proposed in this paper to solve this problem By using potassium borohydride KBH4 as a reducing agent the soluble arsenic was converted into the gaseous arsine AsH3 or solid
Due to geochemical similarity between arsenic and sulphur polymetallic sulphide deposits and pyrite/arsenopyrite bearing coal beds often contain exceptionally high concentrations of arsenic Arsenic release from mine waste occurs after oxidative dissolution of sulphide minerals Both arsenite and arsenate forms coexist in many mine drainage localities
Semantic Scholar extracted view of "Uptake of heavy metals arsenic and antimony by aquatic plants in the vicinity of ore mining and processing industries" by E Hozhina et al Skip to search form Skip to main content Skip to account menu Semantic Scholar s Logo Search 221 414 015 papers from all fields of science
Human communities need water and mineral resources the supply of which requires the implementation of recycling and saving strategies Both closed and active mining sites could beneficiate of the implementation of nature based solutions including bioreactors involving sulphate reducing prokaryotes SRP in order to separate and recover arsenic As and
Mining and mineral processing of gold bearing ores often release arsenic to the environment Ammonium is released when N based explosives or cyanide are used Nitrification of simulated As rich mining waters was investigated in batch bioassays using nitrifying cultures enriched in a fluidized bed reactor FBR
In light of the foregoing an object of the present invention is to resolve these problems and provide a method for processing arsenic that is included in copper arsenic compounds comprising extracting arsenic from non ferrous smelting intermediates containing arsenic and especially from copper arsenic compounds where copper and arsenic exist in the
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