Tar bases/nitrogen-containing heterocycles Pyridines, quinolines, benzoquinolines, acridines, indolines, and carbazoles Aromatic amines Aniline, aminonaphthalenes, diphenylamines, aminofluorenes, and aminophenanthrenes, cyano-PAHs, benzacridine, and its methyl-substituted congeners Sulfur-containing heterocycle...
Coal-mining operations either by underground or open-cut mining is the most recognizable environmental problem everywhere in the world while it modifies the physical, chemical and biological parameters of the environment around the mining area. In fact, it has far-reaching impacts on human being civ...
Waterwall wastage can also oc- cur with the extent dependent on factors such as degree of staging, unit aerodynamics, heat release rates, coal compo- sition (high versus low sulfur), UBC, and tube temperature. These impacts can be minimized by an appropriately de- signed OFA system.24 ...
Mechanical behavior, failure pattern and damage evolution of fiber-reinforced cemented sulfur tailings backfill under uniaxial loading. Constr. Build. Mater. 2022, 332, 127248. [Google Scholar] [CrossRef] Zhang, C.; Wang, J.; Song, W.; Fu, J. Pore structure, mechanical behavior and damage...
and ultimate analysis provided insights into the quality of the coal, with average concentration values of moisture content (6.95%), ash content (22.12%), volatile matter (28.55%), fixed carbon (42.40%), carbon content (55.35%), hydrogen (4.7%), nitrogen (0.95%), sulfur (4.82%), and ...
Biomass, compared to coal, has lower sulfur, N and heavy metals. It is also carbon-neutral if produced sustainably, thus co-conversion of biomass and coal can make significant contributions in mitigating GHG emission and other emissions. Compared to carbon capture and storage (CCS), co-...
A weak band at 164 cm−1 can be attributed to the vibration of sulfur [35]. Some authors attribute bands at low frequencies to acoustic vibrations [34,36]. Figure 18. Raman spectrum of greenockite. To confirm the structure of the studied crystals, an X-ray powder diffraction analysis ...
Brora coals host pyrite, both as sporadic isolated, framboidal pyrite, and more typically in continuous bands. Coal whole rock Te concentrations are 0.04–0.11 ppm, higher than the world average coal content of 0.015 ppm (estimated average [11]) and average continental crust value of 0.002 ...
Sulfur Dioxide Emission if Traditional Pattern would not Improved Decrease of Carbon Emission in Heat Supply Smoke Dust Emission if Coal Consumption if Traditional Pattern would Traditional Pattern would not Improved not Improved Saving of Limes to n es Carbon Emission from Process of Calcination ...
Whole rock Brora coal shows Te enrichment compared to estimates of world average Te coal compositions, but more significant Te enrichment occurs in the rims of discrete pyrite phases. Anomalous Te coincides with Se and Hg in the pyritic rim, suggesting incorporation of these elements during the ...