White jabon bark (Anthocephalus cadamba Miq.) has a high chemical content of cellulose and lignin that has the potential to be used as an adsorbent to adsorb lead(II) metal ions. This study aims to determine the efficiency and adsorption capacity of white jabon bark-activated charcoal in adsorbing lead(II) metal ions, determine the kinetics model and adsorption isotherm. The preparation of whit…