Ard is often mislabelled amd or acid mine drainage too. Problems associated with mine drainage contaminated drinking water disrupted growth and reproduction of aquatic plants and animals corroding effects of acid on parts of infrastructure such as bridges acid mine drainage mines built as early as the 1800s were developed in a manner which utilized gravity drainage, to avoid excessive water accumulation in the mines. Monitoring the extent of contamination from acid mine drainage in. Technology has developed, and reading acid rock drainage manual printable 2019 books might be more convenient and easier. Treatment of acid mine lakes lab and field studies tu freiberg. Abstract the exploitation of coal and metallic mineral resources worldwide invariably results in the production of large quantities of overburden. Acid mine drainage abatement and treatment plans odnr mineral. Evolution of acid mine drainage formation in sulphidic mine. An in situ ftir study of galena and pyrite oxidation in aqueous solution. The ph scale actually measures hydrogen ion concentration in water solutions. Refer to the watershed characterization manual bowman et al. Acid rock drainage as a concern and part of all metals and mining operations. Development of the global acid rock drainage guide. Acid mine drainage, acid and metalliferous drainage amd, or acid rock drainage ard is the.
Also learn about the impact of construction projects on this phenomenon. Acid rock drainage ard, also referred to as acid mine drainage amd, is the outflow of acidic water from mining operations including waste rock, tailings. Acid rock drainage analysis and testing services acid rock drainage ard also known as acid mine drainage amd describes the formation of acid when sulphidebearing mine wastes principally pyrite, but also pyrrhotite and chalcopyrite are exposed to oxidising conditions, typically in the presence of water, due. The global acid rock drainage guide pdf about 126 mb. Pdf acid rock drainage from highway and construction. Skousen and others published acid mine drainage control and treatment find, read and cite all the research you need on. This is a natural chemical reaction which can proceed when minerals are exposed to air and water. Acid mine drainage overview acid rock drainage ard is produced by the oxidation of sulfide minerals, chiefly iron pyrite or iron disulfide fes2.
Acid rock drainage prediction manual mend project 1. Characterization of limestone reacted with acidmine drainage pdf. Pdf acid mine or acid rock drainage jorge g ibanez. Acid mine drainage control technologies are measures that can be undertaken where. Pure neutral water has a ph of 7, acids have a ph less than 7 and. This pdf of the gard guide can be downloaded and printed. The development of the global acid rock drainage gard guide is sponsored by inap with the support of the global alliance.
So, to better understand amd and ard, lets begin by defining some terms like ph the standard measure of acidity. Pdf acid mine drainage amd occurs after mining exposes metal sulfides to oxidizing conditions. Pdf acid mine drainage control and treatment researchgate. Learn about how acid can naturally be generated from rocks exposed at the earths surface. Today, the control and mitigation of acid mine drainage amd is. Pdf acid mine drainage formation, control and treatment. Acid mine drainage amd is currently the main pollutant of surface water in the midatlantic region.
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