IRABOR, G. E. The effect of acid modification of coconut fibre biomass on the adsorption capacity of zinc ion from aqueous solution. TROPICAL JOURNAL OF ENGINEERING, SCIENCE AND TECHNOLOGY, [S. l.], v. 1, n. 2, p. 53–61, 2023. Disponível em: http://tjest.org.ng/index.php/journal/article/view/86. Acesso em: 12 oct. 2025.