Evaluation of the Extraction and Swelling of Colombian Coals

In this work samples of Colombian coal of the mines of La Loma (Cesar) and Cogua (Cundinamarca) were swollen and extracted with 6 different solvents, to evaluate secondary interactions. The best swelling solvent for La Loma coal was monoethanolamine, MEA, (Q = 2,6); other solvents had lower values because of their smaller polarity and basicity. The swelling order for this coal was: Heptane