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The effect of thermal treatment, at a relatively high temperature (≃ 340°C), on two high-volatile bituminous coals is examined by water adsorption and small angle X-ray scattering (SAXS). The results suggest that the mesopore structure in both samples undergoes a partial collapse. Furthermore, a strong hydrophobic effect, at the very early stages of the adsorption process, is noted for only one of...
A Spanish bituminous coal has been demineralized by froth flotation. The effect of the particle size, solution pH, and the presence of electrolytes on the process yield has been investigated. The ash contents of the clean coal have been reduced by between 1.5-3 times with regard to the corresponding feed coal. Three activated carbon samples have been obtained by steam activation of the floated...
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