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Extent of lead in high sulphur Assam coals. ... Pyrite in UK coals: its environmental significance. Article. Jul 1994; FUEL; ... cost-effective separation of pyrite from coal before combustion ...
contains, the easier it is to start to burn it, or to achieve its ignition. Sulfur content of coals is seen to be quite variable. Because of the special importance of sulfur, related to the environmental consequences of burning coals, we shall discuss the presence of sulfur in coal in some detail (see below).
Pyrite is the main inorganic sulfur-containing 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 LPS-raw and LPS-d) in this study.
Sep 15, 2008· Read "Supergene and hypogene alteration in the dual-use kaolin-bearing coal deposit Angren, SE Uzbekistan, International Journal of Coal Geology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
D.A.Spears and S. J. Tewalt. 2009. 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 80, 157–166. D.A.Spears, 2012.
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 6.97 mg/kg. Choosing the percentage of provincial coal resources in ...
Coal Utilization and the Environment 18-20 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. D.Alan Spears, M.Rosa Martinez Tarazona, S. Lee. Pages 1051-1055 Download PDF.
Environmental impact of minerals in UK coals. Geological Society, London, Special Publications, Vol. 125, Issue. 1, p. 287. ... origin and significance of cone-in-cone 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.
The Pennsylvanian coals in the UK were deposited in a low-lying 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.
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 ...
Organic affinity of silver in subbituminous Assam coals. ... Pyrite in UK coals: its environmental significance. Article. Jul 1994; FUEL; ... cost-effective separation of pyrite from coal before ...
Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known 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.
Sales Inquiry Pyrite In Uk Coals Its Environmental Significance. EPA - What is Acid Mine Drainage. What is Acid Mine Drainage Sources of Non-point Source Pollution Acid Mine Drainage (AMD) is currently the main pollutant of surface water in the mid-Atlantic region.
Fine-grained pyrite in some Chinese coals has been investigated, with analysis by optical micros-copy and a scanning electron microscope equipped with energy dispersive X-ray spectrometer illustrating that the interaction between mineral and organic matters results in the irregular pyrite crystal present in coal.
The Parkgate coal of Langsettian age in the Yorkshire-Nottinghamshire coalfield is typical of many coals in the UK in that it has a high sulphur (S) content. Detailed information on the distribution of the forms of S, both laterally and vertically through the seam, was known from previous investigations. In the present work, 38 interval samples from five measured sections of the coal were ...
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 pyrite-bearing rock, the pyrite's iron component may be oxidized, releasing its sulfur to form sulfuric acid.
Fine-grained pyrite in some Chinese coals has been investigated, with analysis by optical microscopy and a scanning electron microscope equipped with energy dispersive X-ray spectrometer illustrating that the interaction between mineral and organic matters results in the irregular pyrite crystal present in coal.
Visean coal seam in Crich Quarry emgs.uk. 2011-9-2 · the coal on record before its loss by quarrying. It also raises some questions of palaeo-environmental significance that are briefly discussed below. Description The coal is variable in thickness, up to 300 mm at Pyrite is common in such coals, and often occurs in the limestones adjacent
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.
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 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.
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).
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 .
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 .
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