آخرین محصولات
Bacteria and plants could help clean up toxic waste from gold mines
The goal of acid mine drainage treatment is to produce treated water that can be reused in mining, irrigation, drinking or simply released back into the environment as clean water. ... The Krugersdorp mine dumps are in an open space and during the windy season in July and August every year, residents further away breathe in this …
The impact of disposal and treatment of coal mining …
Thus, today, both coal mining waste dumps from the past and filled subsided lands are in existence. However, the comparative impacts of these different disposal techniques on the environment and ...
MINE WASTE: SOURCES, PROBLEMS AND MITIGATIONS.
This crisis was simply because some mining companies had abandoned mines without rehabilitating them underground, nor neutralising the above ground mine dumps and slime dams, further resulting in ...
Classification and Environmental Impact of Mine Dumps
The chapter suggests a complete classification of mine dumps based on their genesis; determines their multifactor environmental impact; and gives a methodological …
Here's how to fix toxic mine dumps
Here's how to fix toxic mine dumps ... The company also has a water treatment plant on site. It will clean the polluted water for use in its processing plant and improve its quality before it is decanted safely into the environment. Photos: University of Pretoria Poison: Mine dumps on the West Rand are a threat to residents in nearby …
Regulation and remediation of the impacts of …
15 Elvis Fosso-Kankeu, Alusani Manyatshe and Frans Waanders, 'Mobility Potential of Metals in Acid Mine Drainage Occurring in the Highveld Area of Mpumalanga Province in South Africa: Implication …
Regulation and remediation of the impacts of …
These processes enable the evaluation of soil and water quality and the extraction of pollutants, such as heavy metals and metalloids, aiming to achieve land and water quality that is suitable for …
Mine Wastes: Characterization, Treatment and Environmental Impacts
In this study, remote sensing and mining-related GIS data were used to identify and analyze 1233 (ultra-)mafic magmatic mine area polygons in China, which covered approximately 322.96 km 2 of land ...
Study on the Temperature Field Change Characteristics of …
In order to investigate the influence of ambient temperature on the temperature field of coal gangue dumps governed by heat pipes (HPs), using self-developed heat pipe and intelligent cloud monitoring software, a 1-year field test was conducted in the spontaneous combustion coal gangue dump of Danao liang. This study …
UP scientist issues urgent call for clean-up of toxic Krugersdorp mine
UP scientist issues urgent call for clean-up of toxic Krugersdorp mine dumps. Young children in Krugersdorp are breathing in uranium, arsenic and mercury fumes wafting over from abandoned legacy mines, while pollutants are seeping into the groundwater and nearby dams and lakes, cautions Dr Alseno Kagiso Mosai, a water remediation expert at …
An Investigation of a Floor Treatment Plan for In-Pit Dumps
Downloadable! To effectively manage the stability of in-pit dumps with an underlying weak layer, a new plan for the treatment of a staged floor during the life of a mine was proposed in this study. Based on direct shear test results, the shear properties of contact surfaces between the weak layer, dumped spoil, and mudstone were determined.
A review on the impact of mining operation: …
This review discussed mine dump pollution monitoring and mine dump management strategies for some selected countries. …
(PDF) Mining Waste and Its Sustainable Management: Advances …
Works on the sustainable management of mining waste were in the minority, but it is an area of research that has considerable potential given the growing social awareness of the environmental ...
A plan to extract gold from mining waste splits a Colorado …
LEADVILLE, Colo. (AP) — Rust-colored piles of mine waste and sun-bleached wooden s loom above the historic Colorado mountain town of Leadville — a legacy of gold and silver mines polluting the Arkansas River basin more than a century …
Mining mine dumps in South Africa: the interests of mining …
Mine dumps are not merely waste material or the remnants of mining operations. Valuable mineral deposits may remain in these dumps. Mine dumps are valuable assets and exploiting them is a profitable business. Various entities may have an interest in exploiting dumps. One such entity is the mining companies that have a right …
Repurposing of mine waste: an alternative management …
The large volumes of waste generated during gold beneficiation are a major pollution concern in South Africa. To remove these potential pollution risks in perpetuity, non-conventional approaches to mine waste management are required which avoid land disposal of "unwanted" material. This dissertation explores the opportunities, drivers and …
A plan to extract gold from mining waste splits a Colorado …
Piles of mine waste that loom above the historic Colorado mountain town of Leadville are a reminder of the city's boom days LEADVILLE, Colo. -- Rust-colored piles …
Review The geochemistry and hydrology of coal waste rock dumps…
1. Introduction. Coal has been a global energy resource for millennia (Steffen et al., 2011); however, coal mining increased rapidly with industrialisation in Europe during the 18th century and expanded globally through the 19th and 20th centuries (Krausmann et al., 2008).Coal has provided 25% to 30% of the world's primary energy …
A Logical Framework for the Design, Construction, and …
of Mine Site Waste Rock Dumps R.J. Loch, S.M. Lowe 258 Rock Dumps 2008, Perth, Australia • Assessment of soil fertility needs and amendments. This phase should be completed prior to any construction of the waste rock dump. Obviously, for many sites, where material properties are reasonably consistent, this initial planning phase can be …
Ecological restoration of coal mine waste dumps: A case
This study focuses on addressing the issues of spontaneous combustion and slope instability at the coal mine waste (CMW) dump located on the north side of the Yumen River in Ximing Mine, China.
A review on treatment of acid mine drainage with waste …
Waste materials such as fly ash, metallurgical slag, zero valent iron (ZVI), cement kiln dust (CKD), organic waste such as peat humic agent (PHA) and rice husk can be …
Tailings Retreatment
By reprocessing waste rock and tailings to extract gold left behind during the initial mining process, we effectively reduce our environmental footprint while rehabilitating our tailings dams. ... Tailings are processed at Pan African's two state-of-the-art tailings treatment plants, at Elikhulu and BTRP, which processed 13,093,574 t and ...
Zimbabwean mine dumps and their impacts on river water …
The dumps considered in the study were divided into six dump types, namely: gold-mine dumps, base-metal mine dumps (dumps associated with the mining of nickel, zinc, copper and lead), minor-metals mine dumps (dumps associated with mining of antimony, arsenic, and selenium), platinum-group metal mine dumps, chromite and …
The legacy of acid mine dumps
The legacy of acid mine dumps. The mining companies responsible for the pollution are often nowhere to be seen, but many Acid Mine Drainage clean-up technologies do exist. ... "Many methods have been developed for the treatment of mining waste, but most of these are not suitable for large-scale application. I would like to close this gap. I ...
NEW REQUIREMENTS FOR MINE DUMPS AND …
With effect from 24 July 2015, the establishment and reclamation of mine dumps and stockpiles of similar waste from or incidental to a mining operation must comply with the …
Regulation and remediation of the impacts of mine wastes …
A concerning phenomenon in South Africa's mines is the huge quantities of waste generated by the mines. The problem is historical in that there was existing land and water contamination from ...
Remediation potential of mining, agro-industrial, and …
Novel strategies for its treatment involve the use of wastes. This paper evaluates the remediation potential of wastes from urban, mining and agro‐industrial activities to …
Remediation potential of mining, agro-industrial, and …
mines and associated tailing dumps, including enormous sulde-bearing waste rock piles, tailings, and ooded pits, as well as waste produced by operating mines 12,13 . us, this region constitutes a ...
Slope stabilization of coal mine overburden dumps: life cycle
Coal mine waste rock is generated during coal extraction and is usually disposed of in non-engineered dumps. The dumps are extended vertically to 100–120 m height to reduce the spatial footprint.
Toxic legacy: Acid mine drainage threatens Soweto
In the heart of Johannesburg, South Africa, lies a silent yet sinister threat: acid mine drainage. For over a century, the remnants of gold mining have seeped into the land and water, leaving a toxic legacy. In Soweto, where communities once thrived near mine dumps, 1.9 million souls now face the invisible menace.
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