Study on cenosphere recovery from coal ash. Bulletin of the Institute of Chemistry and Chemical Technology, [S. l.], v. 13, n. 13, p. 44–52, 2025. DOI: 10.5564/bicct.v13i13.4580. Disponível em: https://www.mongoliajol.info/index.php/BICCT/article/view/4580. Acesso em: 27 jun. 2026.