Arsenic (As)-contaminated gold mine waste is a global problem and poses a significant risk to the ecosystem and community (e.g., carcinogenic, toxicity). Arsenic …

The majority of the arsenic released in that same year was 26.2 tonnes to air. A total of 12.6 tonnes was released to land and 9 tonnes to water. Among these releases, the mining and quarrying sector released a total of 15.6 tonnes of arsenic. Facilities that report arsenic releases to the NPRI are part of the following key industrial sectors:

Furthermore, these mining activities can lead to increase the concentrations of heavy metals, such as arsenic (As), cadmium (Cd), Hg, lead (Pb), copper (Cu), and …

1. Introduction. Acid mine drainage (AMD) comes from the oxidation of pyrite (FeS 2) and other sulfide-based minerals in rock material that has been exposed from mining activity.The biologically mediated chemical reactions leads to the generation of significant quantities of sulfate (SO 4 2), protons (H +) and ferric iron (Fe 3+) that are …

Materials and Methods. The study area, with surface over 95 km 2 is located in 103 km North East of Tabriz, Center of East Azerbaijan Prov-ince. This area is a part of geological map of Khajeh (Khoja) [].To evaluate impact of abandoned Valiloo arsenic (Zarnikh) mine, water samples was collected in mining area (around and downstream of …

1. Introduction. Chronic arsenic (As) exposure through ingestion can cause severe adverse effects on human health, especially via the consumption of contaminated groundwater [1–5].Epidemiological and experimental evidence is furthermore mounting that in utero or early life exposure to As may affect fetal development or increase rates of …

Globally, metal mining is one of the biggest sources of air pollution. A UNEP study finds that artisinal gold mining to be the leading source of human-caused mercury emissions. Smelting of metals, including gold, is a primary source of arsenic emissions and other toxins globally. To extract metal, ore is placed in a smelter, a type of furnace.

It is well known that microorganisms can dissolve different minerals and use them as sources of nutrients and energy. The majority of rock minerals are rich in vital elements (e.g., P, Fe, S, Mg and Mo), but some may also contain toxic metals or metalloids, like arsenic. The toxicity of arsenic is disclosed after the dissolution of the mineral, …

There are four main types of mining impacts on water quality. 1. Acid Mine Drainage ... Heavy metal pollution is caused when such metals as arsenic, cobalt, copper, cadmium, lead, silver and zinc contained in excavated rock or exposed in an underground mine come in contact with water. Metals are leached out and carried downstream as …

The purpose of this briefing is to provide a general overview about the occurrences of arsenic, its economic uses, and its environmental and health impacts. SME through this discussion presents information to inform and engage in meaningful dialogue about safety and best practices, including recycling, utilized by the mining industry in ...

The potential pathways of arsenic exposure and their reduction were reviewed. 27,28 Arsenic chemistry, and factors controlling the sorption/desorption, mobility, uptake of As by plants and reduction of translocation in plant tissues and release of As from sediments into groundwater have been reviewed. 29–31. The aim of the review is to ...

Some of the groundwater arsenic problems have been recognised for a considerable time. Probably the earliest cases of health effects from arsenic contamination of drink-ing water were recognised in a mining area of Poland in the 1890s. Here, contamination of water supplies by oxidation of arsenic-bearing sulphide minerals produced localised

Photo courtesy Joshua Fisher. A new study examines how acidity and climate impact arsenic removal strategies downstream of the Porgera Joint Venture gold mine in Papua New Guinea. Published November 11 in Applied Geochemistry, the study focuses specifically on arsenic capture and storage by soil and sediments — a process …

DOI: 10.1016/j.scitotenv.2019.136212 Corpus ID: 210043963; The impacts of century-old, arsenic-rich mine tailings on multi-trophic level biological assemblages in lakes from Cobalt (Ontario, Canada).

Arsenic is a common element in the natural environment and is frequently a significant component in gold deposits of the western United States. Such deposits contain various forms of arsenic: arsenides, sulfides, and sulfosalts. Upon weathering such minerals routinely lower the pH of nearby waters, mobilizing arsenic and other metals. Arsenic …

in Acid Mine Drainage and Coupled Impacts on Arsenic Mobility. Edward D. Burton, * Niloofar Karimian, Scott G. Johnston, Valerie A. Schoepfer, Girish Choppala, and Dane Lamb.

Gold miners had a number of arsenic-associated health problems, including excess mortality from cancer of the lung, stomach, and respiratory tract. Miners and school children in the vicinity of gold mining activities had elevated urine arsenic of 25.7 μg/L (range, 2.2–106.0 μg/L). Of the total population at this location, 20% showed ...

Gold mining is one of the most destructive industries in the world. It can displace communities, contaminate drinking water, hurt workers, and destroy pristine environments. It pollutes water and land with mercury and cyanide, endangering the health of people and ecosystems. Producing gold for one wedding ring alone generates 20 tons of waste.

Arsenic Factsheet. Arsenic, a naturally occurring element, can combine with either inorganic or organic substances to form many different compounds. Inorganic arsenic compounds are in soils, sediments, and groundwater. These compounds occur either naturally, or as a result of mining, ore smelting, or when using arsenic for industrial …

We provide an overview of arsenic (As) from gold mining spoils, tailings disposal sites, and mining degraded soils and propose sustainable soil remediation …

Arsenic sources to the biosphere associated with gold mining include waste soil and rocks, residual water from ore concentrations, roasting of some types of gold …

Published November 11 in Applied Geochemistry, the study focuses specifically on arsenic capture and storage by soil and sediments — a process called sequestration. Mine waste contains arsenic, and if …

Nitrogen (N) shortage poses a great challenge to the implementation of in situ bioremediation practices in mining-contaminated sites. Diazotrophs can fix atmospheric N2 into a bioavailable form to plants and microorganisms inhabiting adverse habitats. Increasing numbers of studies mainly focused on the diazotrophic communities in the …

Arsenic is a natural component of the earth's crust and is widely distributed throughout the environment in the air, water and land. It is highly toxic in its inorganic form. People are exposed to elevated levels of inorganic arsenic through drinking contaminated water, using contaminated water in food preparation and irrigation of food crops ...

This study explores interactions between As and Fe(III) minerals, predominantly schwertmannite and jarosite, in acid mine drainage (AMD) via observations at a former mine site combined with mineral formation and transformation experiments. Our objectives were to examine the effect of As on Fe(III) mineralogy in strongly acidic AMD while also …

The study investigates here environmental and social impacts and the residents' perception of the impacts of mining activities on their communities in the light of the numerous promises and prospects that mining is said to provide for communities. ... Except for arsenic (As), whose content was significantly higher in Kipushi Territory in the ...

While producing 66,000 tons a year of battery-grade lithium carbonate, the mine may cause groundwater contamination with metals including antimony and arsenic, according to federal documents. The ...

The aim of this work is to evaluate the routes and effects of arsenic contamination in environmental compartments (air, water, and soil) and environmental organisms (fish and vegetables) from mining regions …

The discharge of antimony-containing complex heavy metal wastewater from antimony mining areas can also have an impact on the surrounding soil environment. ... Long-range spatial variability in sediment associations and solid-phase speciation of antimony and arsenic in a mining-impacted river system. Appl. Geochem., 135 (2021), …

Credit: Joshua Fisher. A new study examines how acidity and climate impact arsenic removal strategies downstream of the Porgera Joint Venture gold mine in Papua New Guinea. Published November 11 ...

The aim of this work is to evaluate the routes and effects of arsenic contamination in environmental compartments (air, water, and soil) and environmental organisms (fish and vegetables) from mining regions as well as the trophic transfer of the element for a risk assessment of the population. In this study, high levels of arsenic were …

As a result, environmental impacts of historical artisanal mining include soil, groundwater, and surface water contamination as well as the possibility of human …

A number of human activities have the potential to increase arsenic concentrations in the air, water, and soil on a local scale. The rate of arsenic release from sulfide minerals can be accelerated by mining activities, which expose the minerals to weathering processes during … See more

Arsenic concentrations at different sites were plotted on the map of the smelting plant. As shown in Fig. 1, soils in the key working regions were seriously polluted by As, including the warehouse area, smelting area, and acid-making area, in which the concentration of As reached up to 3741 mg/kg, 1567 mg/kg, and 4508 mg/kg, …