Chiririwa, H. and Naidoo, E. (2017) “Removal Efficiency of Cu2+, Zn2+, Fe2+, Al3+ and Mn2+ from Aqueous Solution in Presence of Bentonite Using Column Adsorption”, Asian Journal of Chemistry, 29(11), pp. 2536–2540. doi: 10.14233/ajchem.2017.20844.