Palm leaves based biochar: advanced material characterization and heavy metal adsorption study

摘要: The current report provides the synthesis and characterization of palm tree leaves biochar (PL-BC) prepared by simple thermal pyrolysis at 550 °C, which was then used for the elimination of lead and chromium from aqueous solution. An advanced material characterization was conducted by XPS, SEM, EDS, and FT-IR for the raw and spent PL-BC. Moreover, detailed surface chemical state analysis and identification of the chemical species was conducted by the XPS. The XPS surface analysis revealed high carbon content 78.5% while the BET surface area was 21.6 m2/g. The surface oxygen content was about 15.7% suggesting the abundance of oxygen functional groups onto the PL-BC. The adsorption results demonstrated that the removal of lead and chromium by PL-BC obeyed to Freundlich model, while kinetics data obeyed to pseudo-second order model. Furthermore, the Freundlich maximum adsorption …