Preparation and characterization of biochar derived from the fruit seed of Cedrela odorata L and evaluation of its adsorption capacity with methylene blue

Biochar has proven to be an effective tool in several aspects of environmental management; as well as many other applications. Herein we report biochar derived from the capsule-like interior of the seeds of Cedrela odorata L, prepared via pyrolysis at 400 °C. The biochar was characterized using: Elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Thermal gravimetric analysis (TGA) and Raman Spectroscopy. Results demonstrate that a biochar of high thermal stability and porosity was obtained, with surface functional groups that enhance the adsorption process. Equilibrium adsorption data were consistent with the Langmuir isotherm model, indicating surface homogeneity, with maximum adsorption capacity of 158.8 mg/g. These results demonstrate that the biochar is an efficient adsorbent for the removal of MB dye from aqueous solution; and suggests its utility for further exploration in removing heavy metals from water as well as its use as a solid support in catalysis. [Display omitted] •Production of biochar from Cedrela odorata.•Extensive characterization using various techniques.•Highly stable and porous biochar obtained after pyrolysis.•Biochar demonstrated efficient methylene blue adsorption.