PIÑERES, J. L.; PERTUZ, W.; CASTRO, J. Effect of pH and agitation time on combustible recovery and ash rejection in a coal sample using selective hydrophobic coagulation. Ingeniería y Competitividad, [S. l.], v. 20, n. 2, p. 99–108, 2018. DOI: 10.25100/iyc.v20i2.6408. Disponível em: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/6408. Acesso em: 22 nov. 2024.