Utilisation of Exhausted Coffee Husk as Low-Cost Bio-Sorbent for Adsorption of Pb2+. Tropical Life Sciences Research, [S. l.], v. 33, n. 3, p. 229–252, 2022. DOI: 10.21315/tlsr2022.33.3.12. Disponível em: https://ejournal.usm.my/tlsr/article/view/tlsr_vol33-no-3-2022_12.. Acesso em: 15 jun. 2024.