Industrial and agricultural activities such as mining smelting and farming practices have led to widespread arsenic pollution in Chinese soils and may threaten the viability of future rice
This study was carried out in Złoty Stok a historical centre of gold and arsenic mining Two kinds of soil material containing 5020 and 8000 mg/kg As represented a floodplain meadow flooded in
The combined pollution of arsenic As and cadmium Cd are quite common in the polymetallic mining areas located in southern China In the present study field experiments were established for the purpose of exploring a simultaneous remediation strategy of rice variety water management contaminant immobilization on the As and Cd contamination in paddy soil
The diurnal growth of Spirogyra sp increases arsenic release by as much as three times than the control group and significantly changes aqueous arsenic species by varying the dissolved oxygen and pH The amounts of arsenic III and arsenic V removed from living Spirogyra sp were 14605 μg⋅g −1 ⋅h −1 and 6511 μg⋅g −1 ⋅h −1
In this study high levels of arsenic were found in soil samples and in the waters of the Rico stream which were influenced by seasonal variation and by proximity to the gold mine indicating that although the region s soil is rich in arsenic minerals such as arsenopyrite processing has a great influence on the dispersion of this semimetal
Arsenic in the mining industry Atmospheric arsenic emissions from copper smelting represent the largest contribution of arsenic from the mining and metals industry and have been the focus of pollution control technologies and increasingly stringent regulations
Here we explore some arsenopyrite outcrops in the Cerro de San Pedro surroundings such as mining wastes smelting factory arsenic furnace open quarries mine Water Air Soil Pollut 2011 214 307 320 pits arsenopyrite masses partially weathered to scorodite FeAsO4⋅2H2O pegmatite bodies with arsenopyrite heavy contaminated soils and
The studied abandoned arsenic containing mine E N have caused a serious impact on surroundings Zhao et al 2019a Also large amounts of outcrop anomalous points that containing high intensity of As has been observed in the hillsides
The massive sulfarsenide residues dumped on the soil surface near the creek are an important source of metal oid contamination in the mine surroundings especially downstream At about 1 km downstream from the WP As concentration is 43 times higher than the regional legal threshold 24 mg kg −1 Moreno Jimnez et al 2009
Arsenic is often an integral component of lead zinc copper and gold bearing ores and consequently may contaminate soils and fluvial sediments from a variety of sources associated with mining
The massive sulfarsenide residues dumped on the soil surface near the creek are an important source of metal oid contamination in the mine surroundings especially downstream At about 1 km downstream from the WP As concentration is 43 times higher than the regional legal threshold 24 mg kg −1 Moreno Jimnez et al 2009
Flores Tavizón et al 2003 observed that arsenic concentration in the mine wastes taken from the Parral mining site in Parral Mexico varied ranging from 180 ± to 1517 ± mg kg
waste including mine rock mine tailing and smelting slags leads to serious heavy metal pollution in the surroundings and arsenic is the main pollutant causing ecological risk to the environment around the mining area The migration transformation and enrichment of arsenic in the soil rice system are higher than those of other heavy metal
The study of the geochemical behavior of arsenic in mining areas and the microbial remediation of arsenic pollution have great potential and are hot spots for the prevention and remediation of arsenic pollution Heavy metal ions in smelting slag waste ore and mine tailings diffuse into the surroundings through leaching effects
Despite the general shortage of data which is common for old mining sites we explored the complex interplay of climatic conditions hydrological processes and arsenic and iron behavior in the
The low arsenic content found in the residual fraction < 10% of total arsenic is related to the origin of samples since they were collected in the surroundings of mine spoil heaps where large volumes of roasted rock and mine ore waste materials are present coming from the developed metallurgical processes These waste spoil heaps are
Tailings from abandoned mercury mines represent an important pollution source by metals and metalloids Mercury mining in Asturias north western Spain has been carried out since Roman times until the 1970s Specific and non specific arsenic minerals are present in the paragenesis of the Hg ore deposit As a result of intensive mining operations waste materials
The primary contamination sources in the mining area are arsenic containing wastewater dust and waste residues produced during mining and smelting processes Ideally after implementing SC no more pollutants would be produced and discharged and the surroundings would not further deteriorate Reasonable PSA could greatly reduce the
Risk management strategies have been developed to control releases of arsenic from smelting mining and manufacturing processes Arsenic and its compounds are on the List of Ingredients that are Prohibited for Use in Cosmetic Products The Food and Drug Regulations prohibit the sale of drugs containing arsenic for human use
Abundant surrounding rocks are exposed in mining areas due to the influence of geological processes and mining activities Xiao et al 2004a Gangue and sulfide minerals such as quartz kaolinite and pyrite constitute the main components of the surrounding rocks Wen et al 2021a; Zhao et al 2021 The oxidation of pyrite can generate acid mine drainage AMD
and in the surroundings of the mine 87 mine soils and 22 tailings Further sampling included 20 soils from a site on agricultural land located at Higher Todsworthy Farm
1 Effects of pH on arsenic mineralogy and stability in Poldice Valley 2 Cornwall United Kingdom 3 Arsenic mining weathering scorodite thermodynamic mineralogy 85 without environmental regulations have had a significant impact to the surroundings Farago 86 et al 1997; Camm et al 2004; Bowell et al 2013 One such mine
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