_____________________________________________________________________________________________________ *Corresponding author: E-mail: thrbrhm@gmail.com; Chemical Science International Journal 30(12): 39-50, 2021; Article no.CSIJ.52104 ISSN: 2456-706X (Past name: American Chemical Science Journal, Past ISSN: 2249-0205) Comparative Study of the Adsorption of Lead and Cadmium by Activated Carbon from Jatropha curcas and Moringa Husk D. Ibrahim a* , A. Abubakar a , M. A. Babakura a , M. H. Musa a , Z. A. Mohammed a , A. Zakariyya a , S. Mohammed a , O. Esew a , A. A. Danmalam a , I. Dawaki Sale a , I. S. Umar a and A. S. Magaji a a National Research Institute for Chemical Technology, Basawa, Zaria, Nigeria. Authors’ contributions This work was carried out in collaboration among all authors. All authors read and approved the final manuscript Article Information DOI: 10.9734/CSJI/2021/v30i1230270 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/52104 Received 20 August 2019 Accepted 25 October 2019 Published 28 December 2021 ABSTRACT Moringa husks and Jatropha cacus were evaluated using decoloration of methylene blue for the removal of lead (Pb) and cadmium (Cd) from water sample. The results showed that Moringa has better properties: physicochemical properties: pH, moisture content (%), ash content (%), carbon content (%), volatile matter (%), surface area (m 2 /g), electrical conductivity (μs/cm), bulk and density (g/L), 6.4, 14, 4, 63.26, 10, 787, 867 and 400 respectively, decoloration of methylene blue at 10 to 90 minutes ranges from 11 to 87% , Pb and Cd adsorption capacity 55.7 and 86, % degradation 85 and 92 than the Jatropha cacus 50.2 and 55.2, 78 and 83 respectively. The Moringa husk was characterized using Fourier Transform Infrared (FTIR), Scanning Electron Microscope (SEM) and its adsorption properties were studied by Langmuir and Freundlich kinetic isotherms. Keywords: Activated carbon; adsorption; Jatropha curcas; Moringa husks; methylene blue. 1. INTRODUCTION Water is the basic component of life; therefore it is important that people should be concerned about the nature of their drinking water especially the classification, evaluation of water weather fit for consumption, physical and chemical properties of the water [1]. Although most health Original Research Article