Nature and distribution of phosphorus minerals in Cook Inlet coals, Alaska

Rao, P.D.; Walsh, D. E.

doi:10.1016/0166-5162(95)00045-3

Cited by 39 publications

(6 citation statements)

References 8 publications

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“…Phosphorous might also derive from air-fall volcanic ash. Different studies relate the formation of APS minerals to dissolution of volcanic glass in acidic conditions (Tan, 1984;Brownfield et al, 1986;Tripplehorn and Bohor, 1986;Tripplehorn and Finkelman, 1990;Rao and Walsh, 1997). Tripplehorn et al (1991) found an alumino-phosphate (crandallite?)…”

Section: Sources Of P S and Srmentioning

confidence: 99%

Palaeoenvironmental implications of aluminium phosphate-sulphate minerals in Early–Middle Triassic continental sediments, SE Iberian Range (Spain)

Galán-Abellán

Barrenechea

Benito

et al. 2013

Sedimentary Geology

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Section: Sources Of P S and Srmentioning

confidence: 99%

Palaeoenvironmental implications of aluminium phosphate-sulphate minerals in Early–Middle Triassic continental sediments, SE Iberian Range (Spain)

Galán-Abellán

Barrenechea

Benito

et al. 2013

Sedimentary Geology

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“…Rao and Walsh (1997) reported 0.001-0.229 % P in some Alaskan coals. P correlates with Ba, Sr, V, and Ca, and thus it may occur as crandallite group minerals similar to the Alaskan coals (Rao and Walsh 1997). In this regard, Grieve (1992) determined apatite and fluorapatite as the most frequent form of P in coals.…”

Section: Phosphorousmentioning

confidence: 96%

Geochemical and environmental baseline of major and trace elements in Zarand coals, southeastern Iran

Aftabi

Shojaei

Nezhad³

2014

Environ Earth Sci

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In order to establish a geochemical baseline for environmental impacts of coal measures in Rhaeto-Jurassic Zarand coalfields, multielement geochemistry of 22 host rocks, 26 coal seams and 9 coal ashes was determined by ICP-MS, ICP-AES, XRF, PGM-ICP24 and CV-ASS methods at ALS Chemex, Canada. The discrimination diagrams of major trace elements show a continental margin granitoid arc provenance for coal-bearing sandstones and shales. Compared to the crustal abundance, world coals and American coals, the geochemical baseline for most of the elements is within the limits of safeguard background values. However, higher contents of Li (49.31-185 mg/kg), Rb (71.12-131.73 mg/kg), Cs (7.13-16.12 mg/kg), V (72.19-213.1 mg/kg), Th (7.63-11.8 mg/kg), As (10.1-31.31 mg/ kg), Nb (5.4-15.07 mg/kg),Ta (0.4-1 mg/kg), Hf (1.89 mg/ kg), Ga (12.63-32.16 mg/kg), Ce (37.31-64.28 mg/kg), Pb (40.23-55.76 mg/kg), Cr (48.23-133 mg/kg), Zr (60.39 mg/ kg), and Hg (0.24 mg/kg), are of some environmental as well as economic concerns. The low values of B (0.12-12 mg/kg), S (7,839-10,567 mg/kg) and Zn (63.25-157.6 mg/kg) in Zarand coals may indicate a fluvial freshwater environment of coal deposition. Au, Pt and Pd contents are slightly higher than the crustal abundance and further studies are required for their possible environmental and economic evaluation. As the mean Hg value in ash (0.0075 mg/kg) is almost 32 times lower than the mercury content of the coal seams (0.24 mg/ kg), it is noteworthy that much of Hg is released by coal combustion to the atmosphere, which has certainly a detrimental environmental impact. The Ce, Cs, Ga, La, Li, Rb and V values are much higher than the average world and American coals and merit further investigations for being the economic by-products.

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“…Coal does contain nitrogen and phosphorus in considerable quantities and these nutrients can be mixed with water. Most coals contain between 10 phosphorus [39,40,41]. Phosphorus content is often correlated with fluorine [39].…”

Section: Phosphorus Andmentioning

confidence: 99%

Impacts of Coal Stockpile on Soil and Water

Al-Amin

Azam²,

Rahman³

et al. 2019

ACRI

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In this study, the soil and water samples were analyzed to evaluate the effects of coal stockpile on soil and water quality at Haluaghat Upazilla, Mymensingh, Bangladesh. As a natural resource, coal has potential contributions to the development of economics of a country but coal storage deteriorates surrounding surface and ground water and soil quality in different ways. Besides, it has significant impacts on the arable lands and water catchments. The analyses of 10 soil and 10 water samples (5 samples from ground water and 5 samples from surface water) were collected at 0 m, 200 m, 500 m and 700 m distance from the coal storage area were carried out using standard methods. The pH, electrical conductivity (EC), organic matter (OM), macronutrients (N, P and K) and heavy metals (Lead and Cadmium) were analysed for soil samples and for water samples pH, EC, macronutrients (P and K), heavy metals (Pb and Cd) were analysed. From the results, it was observed that most of the value of soil and water quality components were higher at close to the coal stockpile area and gradually decreased with distance. Soil pH value showed a decreasing trend (5.2 to 3.2) with increasing distances from the coal storage area; whereas water pH increased gradually with increasing distances from the coal storage area. Soil OM content was found highest at the coal storage area, which decreased gradually with increasing distance. The content of soil N, P, K was also recorded highest at the coal storage area which followed decreasing trend with increasing distance. The content of Pb and Cd in soil adjacent to coal storage area was higher compared to distant areas (500-700 m) in paddy field. The soil quality might be deteriorated due to coal stockpile effluents. The effluents from the coal stockpile should be treated before it is discharged to soil or water.

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Nature and distribution of phosphorus minerals in Cook Inlet coals, Alaska

Cited by 39 publications

References 8 publications

Palaeoenvironmental implications of aluminium phosphate-sulphate minerals in Early–Middle Triassic continental sediments, SE Iberian Range (Spain)

Palaeoenvironmental implications of aluminium phosphate-sulphate minerals in Early–Middle Triassic continental sediments, SE Iberian Range (Spain)

Geochemical and environmental baseline of major and trace elements in Zarand coals, southeastern Iran

Impacts of Coal Stockpile on Soil and Water

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