Atmospheric arsenic emissions from copper smelting represent the largest contribution of arsenic from the mining and metals industry by far and have been the focus of pollution control technologies and increasingly stringent regulations.  Arsenic can also be leached out of some metal ores by cyanide or acid rock drainage but can be captured and removed from wastewater before it is released into the
The impact of arsenic pollution in waters from the surroundings of three abandoned Hg mines in Northern Spain, as well as reaching the Caudal River, was evaluated. For assessing the factors controlling arsenic release, an extensive study based on the physicochemical characterization and multivariate statistical analysis of waters upstream and downstream each mine site was performed.
01.05.2012· We examined arsenic in soils controlled by geology and mineralization types of mines. Weathering process of sulfide minerals influenced arsenic in soils. Soils derived by hydrothermal mineralization rocks contain high levels of arsenic. Soils underlain by highly altered rocks with igneous and metamorphic processes contain high levels of arsenic.
The English Arsenic Company established substantial works at Roseworthy, Gwithian and at Greenhill near Gunnislake, but the largest in the region was at Devon Great Consols, which at its peak...
Arsenic can be released to the environment through human activities including mining exploitation, metal smelting, waste incineration, coal combustion and the use of pesticides, herbicides, crop
Sediments from cinnabar roasted piles showed a higher arsenic mobility as a consequence of an intense ore treatment, posing an evident risk of arsenic spread to the surroundings. Samples belonging to waste piles where the mining activity was less intense presented a higher proportion of arsenic associated with structural minerals. Nevertheless, it represents a long-term source of arsenic to
Contamination of the environment by arsenic is particu-larly problematic in the surroundings of arsenic mining areas [1-3]. The town of Złoty Stok in SW Poland (Fig. 1) was in the past an important centre for gold mining and processing. From the 17th century until 1962 it was one of the most important arsenic industry centers in Europe [4-7]. Arsenic-
Arsenic fractionation in each mine is broadly in accordance with the mineralogy of the area and the extent of the mine workings. In almost all the studied samples, arsenic appeared predominantly associated with iron oxyhydroxides, especially in the amorphous form. Sediments from cinnabar roasted piles showed a higher arsenic mobility as a consequence of an intense ore treatment, posing an evident risk of arsenic spread to the surroundings. Samples belonging to waste piles where the mining
28.10.2020· The processes of arsenic release vary, from reductive dissolution in the upper part to alkali desorption in the lower part of the basin, leading to the highest arsenic contamination in the basin
Sediments from cinnabar roasted piles showed a higher arsenic mobility as a consequence of an intense ore treatment, posing an evident risk of arsenic spread to the surroundings. Samples belonging to waste piles where the mining activity was less intense presented a higher proportion of arsenic associated with structural minerals. Nevertheless, it represents a long-term source of arsenic
Arsenic is present in the alluvial sediments of the Delta; and the chemical industries along with mining contribute to the anthropogenic causes of arsenic in groundwater. The presence of arsenic in groundwater exceeding the standard limits set by the government and its toxicology pose serious health concerns. The severity of the problem is alarmingly high. Its long-term
In central Chile, specifically the surroundings of the Caletones smelter, located in the country's VI Region, have also been impacted by this kind of mining activity. It has been shown that arsenic is one of the pollutants emitted by this source . In that area the Cachapoal River has received for years the effluent from mining activities, affecting agricultural and probably
mining increases risk of arsenic exposure from the surrounding environment, and if dietary intake from home gardens is associated with reduced risk of arsenic exposure. Methods: We performed assessments in 64 participants from 57 households within the target communities. All study participants gave written informed consent. The study was approved by the institutional
Arsenic (As) is a metalloid naturally present in the environment. Arsenic species vary in toxicity. Metal mining has contributed to the anthropogenic input of arsenic to groundwaters and surface waters. In this study, water samples were collected from 20 sample points in three mining-impacted study areas in Finland: the former Ylöjärvi Cu–W–As and Haveri Au–Cu mines, and
Abstract. Artículo de publicación ISIThe presence of high concentrations of arsenic and copper was determined in most of the environmental matrixes under study (river water, river sediments, and soils), which suggests a real impact of the copper mining activity throughout the region, specifically the surroundings of the Caletones smelter, in the VI Region of Chile.
Characterisation of mining-related sources of arsenic In the surroundings of the schlema-Alberoda uranium mine, geogenic, historic-anthropogenic and contemporary-anthropogenic sources of arsenic are interfering with each other. The adjacent historic schneeberg ore mine has been in operation with interruptions from the 15th to the 20th. Underground workings
mining practices and released into the environment; it can also be added to the environment through mining processes or the use of pesticides and herbicides. Arsenic is ubiquitous in our surroundings; it seems that some level of arsenic in drinking water is inevitable. The question remains as to what level is acceptable. The 50 mg/L MCL has been under debate for several
The Chiprovtsi mining area is contaminated as a consequence of past mining. The 20-year existing of Goliam Bukovets mine tailings impoundment has affected all elements of its surroundings.
The Chiprovtsi mining area is contami. nated . as a consequence of past mining. The 20-year existing of Goliam Bukovets mine tailings impoundment has affected all elements of its surroundings. As a result elevated concentrations of arsenic and heavy metals in upper soil layers and in grass are es-tablished. The low distributions of arsenic and heavy metals in