Once a month, a group of men in t-shirts, jeans, and baseball caps gather around a long table at the New River Health Clinic. The clinic, a small, one-story yellow clapboard building, is located in the tiny town of Scarbro, nestled in the bituminous hills of southern West Virginia. The members of the Fayette County Black Lung Association greet each other by name while they pour bitter black cof...

The characteristics of the porous structure of carbonized materials affect their physical properties, such as density or strength, their sorption capacity, and their reactivity in thermochemical processing, determining both their applicability as fuels or sorbents and their efficiency in various processes. The porous structure of chars is shaped by the combined effects of physical and chemical ...

Currently, conversion of coal into alternative fuel and non-fuel valuable products is in demand growing interest. In the present study, humic acid was extracted from two different ranks coal, i.e., low rank high (lignite bituminous), through chemical pretreatment by nitric acid. Samples lignite bituminous were subjected to oxidation followed extraction using KOH NaOH gravimetric techniques. The...