Guettaf, Naima Kaddour, O. Khettab, N. Gherbi,A. Bouarar, F.2025-07-1420222478-0030https://dspace.univ-boumerdes.dz/handle/123456789/15506The objective of this study is to prepare an adsorbent from animal bones using pyrolysis methods by chemical activation with phosphoric acid, , The study was started by optimizing the factors influencing the process as a function of mass yield and the specific surface area of the prepared adsorbent. the results of the processes show that the specific surface area of the prepared adsorbent reaches a value of 171.948 m2 / g, for a maximum mass yield of 60% to 57% with an acid surface of pH = 4.8. This adsorbent is capable of removing medium-sized aromatic organic molecules, heavy metals,……enArticle