Removal of lead (II) ion from industrial wastewater by activated carbon prepared from Vitex negundo using batch adsorption studies. Indian Journal of Chemical Technology (IJCT), [S. l.], v. 30, n. 3, p. 392–397, 2023. DOI: 10.56042/ijct.v30i3.70662 . Disponível em: https://or.niscpr.res.in/index.php/IJCT/article/view/1322. Acesso em: 14 may. 2026.