Adsorption of pollutants in wastewater using biochar: a systematic review. Research, Society and Development, [S. l.], v. 12, n. 4, p. e23712441228, 2023. DOI: 10.33448/rsd-v12i4.41228. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/41228. Acesso em: 28 jun. 2025.