Fly Ash Cenosphere - Formation, Separation, and Applications in Diverse Fields
J. Environ. Nanotechnol., Volume 13, No 2 (2024) pp. 456-469
Abstract
Despite a global shift towards renewable energy sources, coal will remain a significant energy source in the near future. The by-products of burning coal, have already given rise to environmental issues and its associated pollution. The coal fly ash, bottom ash, and its disposal require large areas of land causing certain alarming issues related to thermal power plants. Separation techniques are available to isolate the valuable constituents from fly ash viz., magnetites, aluminosilicates, cenospheres, unburned carbon, etc. for its specialized applications. The fly ash cenosphere, a high-demand material, can be explored for many industrial applications due to its outstanding characteristics, including low bulk density, good heat resistance, chemical inertness, great workability, high strength, and spherical shape. An attempt has been made in this work to present a comprehensive description of fly ash cenosphere, its formation and separation, basic properties, and environmental issues; in addition, its applications in soil amelioration, ceramics, catalysis, oil well drilling, electronic components, and zeolite synthesis have been elaborated.
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Reference
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