Funmilayo J. Okparaocha, et al. “Removal of Lead and Cadmium in Synthetic Wastewater Using Phaseolus Vulgaris (Beans) Husk As Bio-Adsorbent: Experimental Investigation”. Emerging Challenges in Environment and Earth Science Vol. 2, Feb. 2022, pp. 20-29, doi:10.9734/bpi/ecees/v2/3669F.