Using Nd: YAG Laser to Synthesis some Valuable Materials from Wheat Bran and Sesame Seed Cake

Abstract

This work reports obtaining of useful and highly value materials from wheat bran and sesame seed cake. For this purpose, samples were burned for 30 s using Nd: YAG laser with output power 60 W. The product after burning process and non-burned samples were characterized by x-ray diffractometer (XRD), energy dispersive x-ray (EDX) and Fourier transform infrared (FTIR) so as to investigate its structure and chemical components. XRD results of the wheat bran before burning process revealed amorphous silica, cubic phase of silicon carbide and rhombohedral phase of carbon. The obtained results showed that burning process using Nd: YAG laser can convert the cubic phase of silicon carbide into hexagonal and rhombohedral phase and convert rhombohedral phase of carbon into hexagonal phase; also it revealed a monoclinic phase of silica after burning. XRD results of the sesame seed cake before burning process showed also amorphous Silica, rhombohedral phase of carbon, monoclinic phase aluminum chloride, hexagonal phase of moissanite-4H, syn SiC (yellow, black) and hexagonal phase of graphite-2H, C (black). The obtained results showed that burning process using Nd: YAG laser cased in appearing of crystalline hexagonal phase for silica and Carbon Nitride and converting rhombohedral phase of Carbon into hexagonal phase. FTIR showed a number of absorbance peaks assigned to silica and silicon carbide.