… Pollutants from co-firing and co-gasification are different (eg, SO 2 from co-firing versus H
2 S … to coal imply that lower amounts of H 2 S, NH 3 and HCN are expected when co-gasifying. …

… Emergence of clean coal technologies is seen as a means of reducing coal’s environmental
footprint [3]. Among the clean coal technologies, integrated gasification combined cycle (…

… n + 3 v s n h 0 2 n + 1 with the two spheres being of diameter d p , separated by a distance
h 0 with a separation velocity of v s and radius of contact area b. k is the consistency constant. …

The majority of rare earth elements (REEs) in coal fly ash (CFA) are associated with the
aluminosilicate glassy phase, hindering their solubility in the acid leaching process. In this study, …

… This approach shows that although each new electron in the series fills the 4f orbital, still 5d
and 6 s orbitals have a significant contribution to the bonding of lanthanides, which remains …

Rare earth elements are known to occur in low concentrations in US coals and coal byproducts.
These low concentrations may make rare earth element recovery from these materials …

… was 4 flashes/s, and we did not change the flash duration, we normalized all flash sequences
such that the total LED on-time was equal to 4 flashes/s. All brightness manipulations were …

… We tested this model’s predictions by selectively manipulating one action’s reward
magnitude or probability. As uniquely predicted by this model, changes were restricted to lapses …

… The high H/L ratio for these samples could be, in part, attributed to the higher HREE
concentration of the Lower Kittanning coal seam, and the AMD’s tendency to selectively leach more …

… The measured temperature was maintained constant at 25 C ± 0.1 C, and the shear rate
was increased from 0 to 100 s −1 . At the shear rate of 100 s −1 , viscosity was measured 10 …