A study of acid rock drainage ard
Acid rock drainage from the britannia mines near squamish, british columbia was used to study adsorption and desorption of clinoptilolite acid rock drainage from highway 97c, (coquihalla merritt-to-peachland connector), bc (designated as hw97c ard) was employed for detailed adsorption, desorption, and regeneration experiments. Acid rock drainage (ml/ard) field school the goal of this long-running field course is to provide a practical understanding of metal leaching and acid rock drainage (ml/ard), the major environmental and reclamation challenges faced by the mining industry ml/ard is a multi-disciplinary subject,. Acid rock drainage (ard) is produced by the oxidation of sulfide minerals, chiefly iron pyrite or iron disulfide (fes 2 ) this is a natural chemical reaction which can proceed. Northern dynasty and the pebble partnership conducted a comprehensive geochemical characterization program to understand the metal leaching (ml) and acid rock drainage (ard) potential associated with the rock types present in the general deposit area within the pebble project study area.
Neutralizing acid rock drainage (ard) with alkaline reagents, synthetic ard was treated with hydrated lime (batch and high-density sludge process), limestone, and two because all sludges in this study contained some alkalinity, it was decided to use only the. Acid rock drainage prediction is intended as both a course and a technical reference for an audience of mine operators, consultants, regulators, practising geoscientists and final year/graduate students in the energy, mineral and environmental sectors. Acid rock drainage (ard) is the outflow of acidic water from mining operations including waste rock, tailings, and exposed surfaces in open pits and underground workings sgs laboratories offer complete ard testing services that help predict acidic effl uents. Acid mine drainage, acid and metalliferous drainage amd or acid rock drainage ard refers to the outflow of acidic water from metal mines or coal mines.
The site is characterised by the environmental problems associated with acid rock drainage (ard), which impact the site and the dee river downstream of the mine in january 2000 the de. Where acid rock drainage is likely to occur its control is a primary objective in the design construction and operation of the rock entailing storage facilities with established long term measures to prevent acid development and treat water when it is necessary. Advances in acid rock drainage (ard) characterisation of mine wastes1 warwick a stewart2, stuart d miller, and roger smart abstract research was carried out to improve acid rock drainage (ard. Acid rock drainage (ml/ard) for decades from an upstream closed minesite geochemical testwork indicated: 1 over half of the rock along this section of highway was potentially case study of non-mining prediction and control of acid rock drainage.
Accurate prediction of acid rock drainage (ard) during early life-of-mine stages is critical for the development of effective waste management strategies however, tests and methodologies used by. Acid rock drainage (ard) is a natural process whereby sulphuric acid is produced when sulphides in rocks are exposed to air and water acid mine drainage (amd) is essentially. Acid rock drainage is the term used to describe leachate, seepage, or drainage that has been affected by the natural oxidation of sulfur minerals contained in rock which is exposed to air and water the major components of ard formation are reactive sulfide minerals, oxygen, and water. Geochemistry specialist report delivering sustainable solutions in a more competitive world contaminate water sources through generation of acid rock drainage (ard) and/or metal leaching potential contamination sources included the open pit from this study were still awaited.
A study of acid rock drainage ard
The component of the study plan for geochemical characterization and metal leaching/acid rock drainage (ml/ard) addresses the geochemical characterization of tailings and the mine-rock facilities for the. Conceptual models of the formation and transport of acid-rock drainage (ard) from road cuts were developed based on the results of a literature review, site reconnaissance, and the initial rock and water sampling. An experimental study of water– rock interaction and acid rock drainage in the butte mining district, montana p newbrough æ ch gammons abstract this paper summarizes a laboratory study. Of potential acid rock drainage from the waste facilities is a concern for the project additionally, naturally-occurring ard, from weathering of exposed sulfide-bearing formations, and ard, from.
- Commonly referred to as acid rock drainage (ard) or acid mine drainage (amd), acid drainage from mine waste rock, tailings, and mine structures such as pits and underground workings is primarily a function of the mineralogy of the rock material and the availability of water and.
- A team lead by golder associates prepared a draft of the guidethe gard guide deals with the prediction, prevention and management of drainage produced from sulphide mineral oxidation, often termed “acid rock drainage” (ard.
Acid rock drainage (ard), often referred to as acid mine drainage (ard), can be defined as the drainage that occurs as a result of natural oxidation of sulphide minerals contained in rock which is exposed to air and water. Acid rock drainage: treatment and prevention - publications application of fine desulfurised coal tailings as neutralising barriers in the prevention of acid rock drainage hydrometallurgy, vol 168, pp 159-166 a case study for an integrated management strategy minerals engineering23, 225-229. Mend study of tailings management technologies part 1 24th british columbia mend metal leaching/acid rock drainage workshop vancouver 2017 previous mine waste disposal and ard/ml management at nyrstar myra falls, history of the cobalt camp 24th british columbia mend metal leaching/acid rock drainage workshop vancouver 2017. Acid rock drainage hazards acid rock drainage is a common environmental problem at thousands of abandoned mine sites in the united states and elsewhere whether naturally or anthropogenically caused, ard poses problems for local watersheds, including streams, soil, groundwater, and aquatic life.