Abstract

• Bio-char were prepared from peanut shell by thermal conversion of biomass. Peanut shells were dried in sun-shines to remove moisture. The dried peanut shells were ground to become powder and heated at 200 °C - 800 °C for 1 h respectively. After heating, bio-char was obtained. Structural properties of peanut bio-char were examine by X-ray diffraction (XRD). Scanning electron microscopy (SEM) was used to observe microstructure of bio-char. Functional groups in these bio-chars were investigated by Fourier transform spectroscopy (FT IR).