REMOVAL OF COPPER IONS FROM AQUEOUS SOLUTION USING PALM SHELL CHARCOAL ACTIVATED BY NAOH. International Journal of Geomate, [S. l.], v. 15, n. 48, p. 143–147, 2018. Disponível em: https://geomatejournal.com/geomate/article/view/906. Acesso em: 19 oct. 2026.