Murage, D., Masika, E., & Wanyonyi, W. (2022). Adsorption of Lead (ii), Chromium (vi) and Manganese (ii) metal ions from water using modified Pennisetum purpureum Schumach plant stalk. African Journal of Pure and Applied Sciences, 3(2), 213-220. https://doi.org/10.33886/ajpas.v3i2.294