World over large reserves of low grade coals are available. The use of low-grade coal in
various industries like power plants, metallurgical plants, cement units, etc. creates …

The cleaning potential of a low-rank lignite coal has been evaluated via dense medium
separation (DMS), Reichert spiral and flotation techniques. The washability characteristic of …

In the recent past, researchers have paid much attention to HF, HNO3, and HCl acids for
demineralization of various types of coals with the assumption that they bring negligible …

A selection of chemical reagents representing acids (HNO 3), bases (NaOH) and oxidants
(KMnO 4 and catalyzed H 2 O 2) was used to pretreat coal in order to enhance its solubility …

Power generation from high-ash coals is a niche technology for power generation, but coal
cleaning is deemed necessary to avoid problems associated with low combustion …

The study was aimed to investigate the effects of different factors (such as acid
concentration, cell potential, temperature, coal types, and geometric area of the membrane) …

Hydrothermal treatment (HT) is traditionally used as an approach for upgrading lignite. But
this approach has a limited effectiveness for upgrading high-ash lignite. In this study, we …

Coal is the most abundant and widely distributed fossil fuel. More than 45% of the world's
electricity is generated from coal, and it is the major fuel for generating electricity worldwide …

Sugar factories in India commonly use bagasse, the residue after sugarcane juice extraction,
as a boiler fuel. This leads to generation of large amounts of fly ash containing 16–33 …

The surface properties of fossil fuel show differences according to ranks and mineral matter
content. The fossils that have high mineral matter content are treated with some applications …