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Coal Utilization and the Environment 1820 May 1993 • Orlando, USA. Volume 73, Issue 7, ... select article Pyrite in UK coals: its environmental significance. Research article Full text access Pyrite in UK coals: its environmental significance. Spears, Martinez Tarazona, S. Lee. Pages Download PDF.
Organic affinity of silver in subbituminous Assam coals. ... Pyrite in UK coals: its environmental significance. Article. Jul 1994; FUEL; ... costeffective separation of pyrite from coal before ...
Dec 01, 2009· Read "The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK, International Journal of Coal Geology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Extent of lead in high sulphur Assam coals. ... Pyrite in UK coals: its environmental significance. Article. Jul 1994; FUEL; ... costeffective separation of pyrite from coal before combustion ...
Finegrained pyrite in some Chinese coals has been investigated, with analysis by optical microscopy and a scanning electron microscope equipped with energy dispersive Xray spectrometer illustrating that the interaction between mineral and organic matters results in the irregular pyrite crystal present in coal.
Pyrite is the main inorganic sulfurcontaining matter in coal. The evolution of pyrite during demineralized coal pyrolysis could be studied using XRD because the majority of the other minerals were removed by the acid washing treatment (as confirmed by comparing the XRD results and ash content of LPSraw and LPSd) in this study.
With increasing use of coal, the growing impact on the environment from the Potentially Hazardous Trace Elements (PHTEs) becomes a great concern; the information about the concentration, distribution and occurrence of the PHTEs in coal is of great importance (Zhang et al., 2004a).
In Our Future: The Environmental Implications of Pyrite Use. Pyrite''s sulfur content is one of its potential gifts, but it also raises some environmental concerns. As water moves through a pyritebearing rock, the pyrite''s iron component may be oxidized, releasing its sulfur to form sulfuric acid.
Thanks to the pioneering research of Paul Younger over the past 20 years, acid mine drainage in the UK has been recognized as a major environmental issue. Acid mine drainage and hydrous ferric oxide deposition are environmental hazards resulting from
Pyrite is considered the most common of the sulfide minerals. Pyrite''s metallic luster and pale brassyellow hue give it a superficial resemblance to gold, hence the wellknown nickname of fool''s gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.
Arsenic is one of the toxic trace elements in coals, which is harmful to both the ecological environment and human health. Based on published literature and the data obtained by our research group, a total of 5314 As concentrations of Chinese coals were analyzed. The arithmetic mean of arsenic content in Chinese coals is mg/kg. Choosing the percentage of provincial coal resources in ...
Pyrite in UK coals: its environmental significance D. Alan Spears, M. Rosa Martinez Tarazona* and S. Lee Department of Earth Sciences, University of Sheffield, Dainton Building, Brook Hill, Sheffield S3 7HF, UK * Institute National del Carbon (CSIC), Apartado 73, 33080 Oviedo, Spain (Received 28 June 1993) The geochemistry of pyrite formation in coals is considered.
Finegrained pyrite in some Chinese coals has been investigated, with analysis by optical microscopy and a scanning electron microscope equipped with energy dispersive Xray spectrometer ...
to evaluate the environmental and health impacts of pyrite ash materials. Keywords: coal rejects, sulphuric acid production, nanomineral impacts, potentially hazardous elements. 1. INTRODUCTION Coal has been used in Brazil as solid fuel for thermoelectric generation for nearly 80 .
Pyrite is sometimes called Fools Gold because of its similarity in color and shape to the old mining days, Pyrite was sometimes mistaken for Gold, as they frequently occur together, although Gold and Pyrite can very easily be distinguished by simple observation and testing of characteristics.
Environmental impact of minerals in UK coals. Geological Society, London, Special Publications, Vol. 125, Issue. 1, p. 287. ... origin and significance of coneincone structures in the Kiowa Formation ... Morphology and origin of some secreted syngenetic pyrite in coal beds of the Donetz basin. LITHOL ECON MIN DEP 2, 256 –8.
Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by largescale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...
Legendary Uses and Meaning of Pyrite . Introduction to the Meaning and Uses of Pyrite. Pyrite is often called "Fool''s Gold," though there is nothing foolish about this mineral. Within its gleaming beauty is a stone of hidden fire, one that can be sparked to life by striking it against metal or stone.
Pyrite or Iron Pyrite (FeS2) is a very common mineral that is present in many sedimentary rocks as framboidal crystals. Subject to certain conditions, pyrite is problematic in confined construction, such as under floor filling and bridge embankments. This is due to a .
Pyrite and Coal Mining. Sulfur occurs in coal in three different forms: 1) organic sulfur, 2) sulfate minerals, and 3) sulfide minerals (mostly pyrite with minor amounts of marcasite). When the coal is burned, these forms of sulfur are converted into sulfur dioxide gas and contribute to air pollution and acid rain unless they are removed from the emissions.
The Pennsylvanian coals in the UK were deposited in a lowlying delta plain which was periodically inundated by the sea. This resulted in high S contents, mainly due to early diagenetic pyrite. Based on a statistical analysis of the geochemical data, pyrite is the major host for As, Se, Hg, Tl and Pb and an important host for Mo, Cd, Ni, Sb and Cu.
Finegrained pyrite in some Chinese coals has been investigated, with analysis by optical microscopy and a scanning electron microscope equipped with energy dispersive Xray spectrometer illustrating that the interaction between mineral and organic matters results in the irregular pyrite crystal present in coal.
Request PDF on ResearchGate | The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK ...
David Alan Spears of The University of Sheffield, Sheffield (Sheffield) | Read 129 publications | Contact David Alan Spears ... Pyrite in UK coals: its environmental significance. Article. Jul ...
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